We thrive on participating in and completing many different activities which to a large extent depend on the condition of our body joints, from the large joints of locomotion (hips, knees) to the small joints such as the temporo-mandibular for speaking and eating. Our well-designed and durable joints do a very good job of allowing us to get about and involve ourselves in activity. Damage to our joints can be the result of disease, illness or trauma and this can restrict our mobility and reduce our functional capacity. Joint examination is a core ability of physiotherapists, consisting of a logical assessment, testing to find an abnormality and targeting of the treatment plan to these problems.

A joint is a junction between two bones and in the body our joints have different functions such as force transmission, weight bearing and movement. The symphysis pubis and acromioclavicular joints are examples of force transmission joints, the back is mostly a weight bearing series of joints and the shoulders and knees have to do with movement. The joints we are most familiar with are the synovial joints, the most common type and these have a cartilage lining over the bone ends, synovial fluid secreted by the joint lining and have ligamentous structures surrounding the joint to support its function.

Observing the patient as they walk into the examination room and sit down can give the physiotherapist valuable information about the state of their joint. Slow and guarded movement is common, along with splinting of the joint and carrying it in a close and protected position to minimise joint stresses. Once the physio has taken a history they will check out the joint visually, looking for swelling, effusion, warmth or a joint deformity. If there is no obvious problem in a cool, settled joint the physiotherapist will need to stress the joint more thoroughly to find the restriction. However, a swollen, inflamed joint should be treated acutely as soon as possible.

After the visual examination the physiotherapist will palpate the joint and surrounding structures, which means exploring or stressing an area logically with the fingers or hand, an important physio skill to clarify the diagnosis. The physio will palpate around the joint margins, the joint line itself, the tendon insertions and the ligaments surrounding the joint. Effusion, which means the presence of synovial fluid in a joint, can be felt by the resistance it gives if it is tight, by its thickness and plasticity if it is sticky and by the way it can be moved around the joint if it watery.

Once the joint has been assessed visually, which takes a very short time, the physiotherapist will move on to palpation of the joint structures which will help identify which parts of the joint are affected. Palpation involves systematically feeling and stressing structures in an anatomical area to pin down faulty structures more closely. Palpation of the joint involves testing the joint line, the insertions of the tendons and ligaments, along the ligaments themselves and around the joint margins. Fluid in the joint is called an effusion and can be thick and sticky, very tight and firm if there is a lot, or movable if the fluid is thin

Normal joint function is dependent on normal ligaments and physiotherapy testing of them is routine by manual stressing. Major joint ligaments have great strength and normally should show no reaction to being stressed, however testing can reveal a stretched, painful or ruptured ligament. Muscle strength is charted on the Oxford scale of 0 to 5, although patients may not exert their strength if they are in pain or very anxious. Sensibility of the joint and joint position testing tells the physio that normal joint feedback is occurring which is vital for planning of normal movement.

The last part of the examination is to test the joint in functional activities or positions, especially if there is little to find on the more detailed examination. The physiotherapist can see how the patient is willing to use the joint and this may reveal difficulties with joint function which until then have not been clear.

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Ankylosing spondylitis is an inflammatory arthritic disease or spondyloarthropathy, classified with reactive arthritis, bowel disease arthritis and psoriatic arthritis. The underlying relationships between these diseases are complex but they are connected by enthesitis (inflammation of the ligament/bone junctions) and by possession of the HLA B27 gene on white blood cells. The enthesitis process at the joint edges can cause fibrosis and then ossification of the area (bone formation).

AS is the commonest of the spondyloarthropathies and its occurrence varies with the occurrence of the HLA B27 gene in the population, AS being less common in the tropics and more common in northern European countries. 0.1 to 1.0% of people are affected but this varies with latitude and is more common in white people. About 1-2% of people with the HLA B27 gene actually develop AS but this becomes 15-20% likelihood if they have a first degree relative with the disease.

AS occurs more often in males, with a 3:1 ratio, but females may suffer much milder disease or have minor symptoms which are not diagnosed. AS is a disease of young men, with most presenting before they are 40 years old, and 10-20% presenting with the disease before they are 16. On average people get the symptoms of the disease around 25 years old and are rarely diagnosed when over 50 years of age. The condition is often missed initially as it presents as low back pain so it is important to take a proper history. A useful question is “how does your back feel when you wake up” and AS patients will all say “very stiff”.

Ankylosing spondylitis has similarities but distinct differences from the much more common low back pain:

Morning back stiffness lasting half an hour and often longer Back pain improved with exercise Back pain worsened with rest Night pain later on in the night Other joints may be affected Fatigue is common Active inflammatory disease can cause systemic affects such as unwellness, weight loss or fever

A significant reduction in the ranges of spinal motion is usually recorded by the physiotherapy examination of an AS patient, with a flattened lumbar curve and an accentuated thoracic kyphosis. Later involvement can include reduced neck ranges of motion and reduced chest excursion from involvement of the rib joints. Peripheral inflammation at insertion sites occurs in about one third of patients, the commonest sites being the insertion of the tendo Achilles on to the calcaneum and the insertion of the plantar ligament in the foot. These areas cope with large mechanical loads which may be why they more commonly occur.

Postural analysis of the AS patient is the first thing a physiotherapist notes after the subjective examination, recording spinal abnormalities, flexed knees, rounded shoulders or poking head posture. The ranges of movement of the cervical, thoracic and lumbar spine are measured and a battery of standard measures taken which allows assessment of the disease progression. The hips or other peripheral joints may be affected and these need to be measured also, with the physio likely testing out sites where the enthesis is likely to be painful and inflamed. If the disease is active then the patient may also have joint effusions and may appear unwell, be sweating and not have slept well.

Initially a physiotherapist might treat an active, inflamed site such as the tendo Achilles insertion using ultrasound, ice and gentle stretching, with foot problems responding to insole use. Whole spine exercises are taught with encouragement to get to the end of the movements, concentrating on antigravity movements including extension of the lumbar and thoracic spine, rotation of the thorax and neck retraction and rotations. To counter the typical spinal deformities, patients are taught to rest in good positions such as flat on a firm surface with only one pillow and lying prone. Pool therapy is very popular and effective and patient education is vital to maintain therapy over time.

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Our ligaments, tendons, discs and skin are made up of forms of collagen, one of the most important structural proteins in our bodies. This gives our tissues the ability to heal, its elasticity, its integrity and its strength, allowing us to have strong and healthy joints and skin which will put up with the stresses life puts upon them. Collagen is also responsible for the strength and integrity of our arteries and many other bodily structures. Human populations show great variation in collagen function from those who are very stiff jointed to those who are very mobile jointed or “double jointed”.

Ehlers-Danloss syndrome is caused by an abnormality in the way collagen is produced and acted upon in the body, causing an inheritable deficiency in the strength of the substance. 10 forms of EDS are known to exist, with much overlap, and EDS Three is considered the same as benign joint hypermobility syndrome, called benign because the serious changes such as in the arteries are not present in this form. Very hypermobile joints are the most obvious sign of this syndrome, with a smooth, flexible skin which tends to heal slowly and scar poorly in terms of wide and thin scars.

Joint hypermobility syndrome exhibits a series of symptoms and signs including some fragility of the tissues, slower and poorer wound healing, a propensity to joint dislocations, flexible skin and hypermobility of the joints. Along with these findings patients often complain of multiple chronic joint pains which can develop into a pain syndrome. Poor muscle balance around the major joints causes instability and incorrect muscle patterning which can cause joint and muscle pain and limit the ability to do functional things. Contact sports or vigorous physical activities are not appropriate for this group of people.

Self management in hypermobility syndrome is the main aim of intervention, with patient education taking a strong role to equip the patient to manage their lifelong condition. Due to the abnormally large ranges of joint movement they are vulnerable to ligament or joint strain if they are held posturally at end range or moved with momentum. Hypermobile patients should practice joint protection like arthritic patients, avoiding party pieces like showing off with extreme movements or joint dislocations. Yoga or high momentum activities such as contact sports are particularly unsuitable for these patients.

The stresses and strains of daily life and recreational activities tend to result in more acute injuries and pain complaints in hypermobile patients which are managed by physiotherapy to the joints and muscles. Even in normal circumstances the shoulder is very mobile yet unstable but in hypermobile patients the lax connective tissue makes the joint very unstable and difficult to control. The shoulder and surrounding muscle must keep the large ball of the arm bone aligned with the small socket during large movements and this is difficult with hypermobility, leading to abnormal muscle patterns and pain. It is common to have pain due to this and to repeated dislocations.

Spinal pain, in the neck, low back or thoracic regions, is a common symptom which hypermobile patients complain of, and physiotherapists interpret this as a lack of stabilising muscle control and muscle balance. Physios do not manipulate these patients but mobilizations, core stability work, strengthening weak muscle groups and general exercise are typical approaches. Increasing the usually low muscle tone by gentle weight training or using resistive bands can help joint control in the mid positions and avoid stresses at end ranges. Hyperextension of the knee is a typical problem, leading to joint pain on weight bearing and later to osteoarthritis. Hamstring work to strengthen the muscle opposing the abnormal movement is useful, with patients typically working on the muscle balance of several body areas.

All postures and activities are a challenge to a patient with hypermobility as unsuitable stresses are very easy to apply, causing pain. The patterns of muscle activity are abnormal when the joints are under load, pushing them into end range positions where the ligaments and capsules suffer from strains. Physiotherapy retraining of poor muscle balance can be helpful but patients need to be constantly vigilant and work at their weaknesses persistently. The most important factor overall is patient education as the condition is a long term one and all physical activities challenge the joints.

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The shoulder, or more strictly the glenohumeral joint, is a major and important joint in the upper limb, responsible mostly for placing the hand in front of the body where the eyes can see it as it performs tasks. To allow this ability the shoulder has a very large range of movement, moderate strength and limited stability. This makes the shoulder a “soft tissue joint”, where the stability and satisfactory function depend on the function of the soft tissues, the ligaments, tendons and muscles. For physiotherapists the shoulder is an important joint, with much treatment and pre- and post-operative rehab required.

The shoulder joint is constructed from the socket of the scapula and the humeral head, the ball at the top of the upper arm bone. The head of the upper arm is a large ball and important tendons insert onto it to move and stabilise the shoulder, but the shoulder socket, the glenoid, is small in comparison and very shallow. A cartilage rim, the labrum of the glenoid, deepens the socket and adds to stability. The acromio-clavicular joint lies above the shoulder joint proper and provides dynamic stability during arm movements, being made up from part of the scapula and the outer end of the clavicle.

A great many muscles act on the shoulder joint and on the other joints in the shoulder girdle, the acromioclavicular, sternoclavicular and scapulothoracic joints. The glenohumeral and scapulothoracic joints are acted upon by the major stabilisers and movers in the area, varying from power muscles which allow forceful work to stability muscles such as serratus anterior and the rotator cuff to smaller movement muscles such as deltoid. The muscles must keep the relationship between the shoulder blade and the thorax and ribcage steady and under control for the glenohumeral joint to also enjoy stability and precise movement.

The shoulder muscle tendons become flatter and thinner as they approach and then insert themselves onto the head of the humerus. By this way the rotator cuff, a group of four muscles including the supraspinatus, infraspinatus, teres minor and subscapularis, is able to exert its forces on the humeral head. The tendons coalesce as they surround and insert onto the ball of the humerus, forming a cuff around the ball, centering the ball on the socket to counter the tendency to slide upwards under muscle activity. Keeping the ball centred on the socket means the larger and more powerful muscles can perform functional shoulder and arm movements.

As a person ages, the rotator cuff develops degenerative changes in its tendinous structures, causing small tears in the tendons which can enlarge until there is no continuity between the muscles and their attachments. This leads to loss of normal shoulder movement and can be very painful but is not always so and “Grey hair equals cuff tear” is a common saying. Physios work at rotator cuff strengthening, whilst in massive tears the main shoulder muscles can be progressively strengthened to improve function. Surgery is possible for massive, moderate and small rotator cuff tears and physiotherapists manage the post-operative protocols.

The shoulder joint is not typically affected by OA (osteoarthritis) but when it is physiotherapists treat arthritic shoulders by joint mobilisations, muscle strengthening and ranges of motion. Once physio has nothing else to offer, total shoulder replacement is one of the further options, with various surgical techniques involving replacing the humeral ball and the scapular socket either anatomically or in reverse. The shoulder is often called a “soft-tissue joint” as the soft tissues, their strength and balance, are vital to the function of the joint. Post-operative physio management is essential as the correct protocol must be closely followed to ensure success.

Physiotherapists treat many other types of shoulder problems such as impingement, tendinitis, hypermobility, abnormal muscle patterning, fractures and dislocations. Impingement is treated by strengthening the rotator cuff or by subacromial injection or acromioplasty operation, where the end of the acromion can be excised. Tendinitis is treated by direct treatment of the tendon and graded strengthening and hypermobility by stability work and accepting the limitations dictated by the condition. Abnormal muscle patterning is managed by teaching normal patterns functionally and fractures and dislocations by the protocols laid down by the surgeons and trauma physiotherapists.

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Up to 5 percent of fractures are of the humerus so this is a common presentation at Emergency Departments, with up to 80 percent of fractures either not displaced or displaced minimally. As older people suffer mostly from this fracture, there is a relationship with osteoporosis and people often have a fractured forearm on the same side. These fractures occur mostly at the upper arm, known as the humeral neck (shoulder fractures), and at the middle of the arm bone, with artery or nerve damage possible but not common.

The usual cause of a humeral fracture is a direct fall on the arm, either on the hand, elbow or directly onto the shoulder itself. Due to all the muscles that attach to the upper humerus, there can be a lot of muscular force at the time, dictating how much the bones are pulled into a displaced position. Humeral fractures are more common in the elderly with an average age of fracture of around 65 years and younger people usually have a history of forceful trauma such as motor accidents or sport.

A forceful incident is normally required to fracture the humerus and if there is no history of this the physician will suspect a cause such as cancer. The physio examination will show significant pain on attempted movement of the shoulder or elbow, reduced movement of the shoulder, widespread bruising or swelling in the whole arm and in shaft fractures some arm shortening is possible. Checking for nerve damage is important as the radial nerve can be injured especially in shaft fractures, impairing control of wrist and thumb muscles.

Shoulder Fracture Management

Initial management is to restrict the patient’s movement and give them enough painkillers to make them comfortable. Upper humeral fractures can be managed conservatively if not displaced but if the greater tuberosity is fractured then an injury to the rotator cuff must be considered, more common in older people, injuries with high forces involved and where there is a lot of displacement. The typical treatment is a collar and cuff sling, allowing the elbow to hang in mid air and keep the humerus in line. Shaft fractures may be managed by humeral bracing.

Open reduction internal fixation (ORIF) is often performed for displaced fractures with three or four fragments and more commonly in younger patients, while older patients have humeral head replacement to prevent pain and stiffness in the shoulder. Nailing or plating is used in shaft fractures if necessary but these usually heal without surgery. Humeral fractures can have complications including injury to the radial nerve in shaft fractures, frozen shoulder and death of the humeral head due to loss of blood supply. Although normal healing time is 6-8 weeks, older sufferers may never re-establish normal range of shoulder movement.

Physiotherapy Management of Shoulder Fractures

Initial physiotherapy assessment consists of assessing the patient’s pain levels as these can vary hugely, the joint ranges of motion of the elbow, hand and wrist and the tissue swelling and bruising in the arm. Muscle strength is tested in the forearm as this may indicate an injury to the radial nerve, as may loss of sensory discrimination. The patient may stay in the sling for 2-3 weeks with the physio exercises beginning early if pain is reasonable and the fracture stable. The aim is to maintain the range of motion of the shoulder joint while the fracture heals, by performing bent over pendular exercises to counteract gravity.

The fracture will have started to heal at the three week point so the physio will start auto-assisted exercises, the patient assisting the movement of the fractured arm with the healthy one. Progression from here it to unassisted exercises where the affected arm does the movement alone, practicing flexion, medial and lateral rotation. Healing time for the humerus is six weeks so the physio will increase the force behind the exercises, gently stretching the joint to increase the available movement. Joint mobilisation techniques can be uses to free up the accessory movements and Theraband used to perform strengthening exercises and maintain gains in movement.

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When the weather begins to get icy it gets less safe underfoot and people start to fall over and hurt themselves. A common injury is a fall on the outstretched hand (FOOSH) which often results in wrist fracture. When we say wrist fracture we are usually describing a fracture of the end of the radius and ulna, the two major bones of the forearm. Wrist fractures vary from very minor like a chip to major breaks which require operative fixation. Physiotherapists work in fracture clinics and rehabilitate the hand, wrist and forearm after such injuries.

75 percent of wrist fractures involve the radius and ulna, with the wrist the most often injured part of the upper extremity. A fracture can be minor and be undisplaced or very severe with multiple fractures (comminuted) and badly displaced, which may need operation with plates and screws to fix the fracture securely. The type of fracture is related to the age of the sufferer: adolescents have wrist growth plate displacement, children bend their bones in a greenstick fracture and adults present with a fracture of the final inch of the forearm bones above the wrist.

The commonest age groups for colles fractures to occur in are the 6-10 and the 60-69 year olds, with older people more likely to suffer fractures in the forearm away from the joint and younger people, due to the higher violence of the injury, being more likely to get joint involvement in the fracture. Diagnostic features of a radius and ulna fracture are significant pain with increased pain on palpating the area, a “dinner fork” bony deformity, swelling over the area and a marked reluctance to use it.

Management of Colles Fracture

The main principle of treatment is to immobilize the fracture in an anatomically correct position so it heals as closely as possible to the original shape. The fracture is assessed for its severity and whether it is displaced. Displacement can be manipulated and plastered to hold the position but if the displacement is too great or the plaster does not hold the position then operative intervention is pursued. Internal fixation can involve passing narrow wires into the bones to hold position (k wiring) or inserting a plate with screws to immobilize the fracture, after which plaster is again applied.

Physiotherapy after Wrist Fracture

The plaster is usually in place for 5-6 weeks and then the physiotherapist can get a look at the wrist and hand to see what rehabilitation plan is required. When the hand is removed from plaster its condition varies greatly so a skilled physio needs to assess the situation and recommend appropriate treatment. The swelling and colour of the hand will give the physiotherapist important information about how severe things are. High levels of pain, strong changes in colour and extreme swelling in the hand and wrist could indicate Complex Regional Pain Syndrome (CRPS), a severe pain condition needing vigorous management.

The physio will look at the ranges of movement of the upper limb, checking the shoulder ranges first to make sure the shoulder was not damaged in the fall. The elbow range is usually unaffected except in some cases where the patient has kept their elbow bent in a sling for weeks, making the joint stiff. Supination and pronation are very important movements functionally and often restricted due to the proximity of the inferior radio-ulnar joint to the fracture site. Wrist flexion and extension, finger movement and thumb ranges are all assessed and recorded.

If the physiotherapist determines that the wrist is uncomplicated after removal of plaster then they will prescribe mobilizing exercises for the wrist, forearm and hand and perhaps the elbow and shoulder. Coming straight out of plaster is a shock for the wrist and a strap on futura splint can rest the wrist and permit normal activity without too much discomfort. If the wrist is very stiff then attendance at a hand class may be useful and the accessory joint movements can be restored by using joint mobilization techniques on the many wrist joints. The physio will progress to strengthening the wrist as the movements improve and teach the patient to use the hand normally in daily activities.

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Most pain is related to injury or tissue damage and the treatment is relatively straightforward in theory: the tissue at fault is searched for and investigated, a cause is found and the treatment is aimed at improving the underlying abnormality. This is the medical model of disease and injury and it works exceptionally well, diagnosing our fractured leg, pneumonia, arthritic joint or heart attack and then treating it so the problem is solved. The difficulty starts with the many pain conditions which don’t fit into this model and which are not well diagnosed or treated by medical doctors.

If we sprain an ankle the pain signals rush up the nerve towards the spinal cord and cross over onto the next relay of nerves up to the brain. This next relay of nerves is made highly sensitive by the incoming pain and they start to react more and more strongly to the incoming barrage, amplifying the pain we experience in our mind. This will settle down as the injury heals and the system resets to normal, however this does not always occur or a pain can start without any incoming tissue pain at all. This is a pain syndrome, a collection of painful and other symptoms which do not appear to have an underlying pathology.

Typical pain syndromes are complex regional pain syndrome (CRPS), chronic widespread pain (CWP) and fibromyalgia syndrome (FMS). CRPS occurs after minor or moderate injury to a limb such as the ankle or wrist and the underlying reasons are not well understood. In the wrist the person may be in plaster for a few weeks for a minor fracture or sprain but complains of high levels of pain and has difficulty keeping the fingers moving. The fingers are stiff and swollen and moving them elicits significant pain, at which stage immobilisation is removed if possible to allow rehabilitation.

The other pain syndromes exhibit all over body pain with hypersensitive areas in muscle bellies known as trigger points, which are very sensitive to pressure but can also run pain away from their origins. Physiotherapy treatment for CWP includes stretching, general exercise, positioning advice, acupressure and acupuncture. Fibromyalgia has the symptoms of CWP but adds IBS, mental difficulties with concentration, sleep problems, excessive tiredness on waking, hypersensitivity to pressure and a severe reaction to overactivity. This syndrome overlaps with chronic fatigue syndrome (CWP) or ME and can be exceptionally challenging for the sufferer.

Psychological interviewing of these patients is vital as having a long-term pain problem is very likely to produce low mood, depression and anxiety which in turn lead to poor coping and difficulties engaging with therapy. The clinical psychologist may find that the patient discloses a significant history of abuse, either in childhood and/or in adult relationships. This will have lead to important difficulties in dealing with other people, negative thinking, passive communication, anger and problems sticking to a treatment once agreed. The clinical psychologist will have an important role in supporting these patients through a course of treatment.

A FMS pain management programme covers several psychological skills and strategies, including pacing activity, realistic and negative thinking, assertiveness and communication skills, mindfulness and acceptance, goal setting and planning, validation of the reality of the condition and reduction of isolation by meeting others with the same condition. Passive communication with families, friends and others is very common and this leads to anger and frustration as they are unable to make their needs clear. The overall very negative nature of the pain experience leads to a negative bias in thinking about the world and their problems.

Medical treatment is not very successful in pain syndromes but drugs such as amitriptyline can be useful with their nerve transmission altering affects. Many FMS sufferers react adversely to drugs and this limits their usefulness, especially if morphine-related chemicals add to lack of mental clarity and fatigue. A graded exercise programme, carefully guided to avoid overdoing, is useful in the longer term as these patients have lost of lot of strength and fitness. Stretching is often reported to be helpful and may be all a person can do if they are having a worsening but overall a structured plan is necessary for a pain syndrome.

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Osteoarthritis (OA) is the commonest joint degeneration condition in the world, resulting in huge amounts of pain and suffering, work loss, expense and disability. Ageing of western developed populations, soon to be followed by some developing countries such as China, will place an increasing burden on medical services as the occurrence of OA rises steadily with age. There will be an increasing need to provide medical and physiotherapy treatment for OA over the next 50 years and for many thousands of people this will involve joint replacement.

Quality of life improvements after medical interventions vary but for joint replacement are some of the highest of all medical procedures. Hip replacement has a long history but the 1960s saw its development into a reliable procedure, with modern developments making it a predictable and very successful treatment for hip osteoarthritis. It is used to manage a variety of complex hip conditions with excellent outcomes at fifteen years and beyond. Conservative treatment is always instituted initially but if the joint degeneration becomes severe then joint replacement is the remaining option.

In surgery the degenerative joint is excised and artificial components of alloy steel and plastic are substituted. The hip joint ball is removed and the socket cored out in preparation, the new ball and stem is inserted into pressurized cement in the femur and the new cup is pressed into cement in the socket. The two materials, steel alloy and ultra high density polyethylene, ensure very low friction in the joint similar to the original and contribute to low wear and long life of the joint.

The physiotherapist will review the patient’s medical notes for their post-operative instructions and medical status and then assess the patient’s respiratory and lower limb function. Assessment of leg muscle function and sensory ability is important to exclude nerve injury and the physio will give leg exercises to get the limb moving, although an epidural can slow this process by reducing power and feeling for a while. The patient will be mobilised up into walking by the physiotherapist and an assistant, using a frame or elbow crutches and observing hip safety precautions to avoid dislocation.

Toes, ankles, quadriceps, hip flexion and buttock exercises continue to restore normal muscle activity to the legs and maintain the circulation. Routine painkillers should be taken as this helps patients get up and about and once safe they can get up three times a day or more with a helper to walk, toilet and wash. Usual precautions are taken and when sat out the chair must be the correct height and normally patients do not put their feet up whilst sitting.

Physiotherapists routinely teach and correct patients’ gait after hip replacement to improve joint movement, muscle strength and a normal walking pattern. On getting a patient up initially the physio will teach the “step to gait”, instructing the patient to place the crutches forward at first, place the operated leg between the crutches then following it by stepping to it with the unoperated leg. This technique is steady but slow and used when safety is key, and the next progression is to a “step through gait” where the unoperated leg then moves through past the operated leg into a more normal gait. The most advanced gait sees the operated leg and the crutches moving together at the same time and gait approaching normal.

Six weeks from discharge patients have usually developed a normal gait, good muscle power and have returned to many functional abilities including riding in a car, mounting stairs and normal walking. A stick can be used if the person is elderly or feels they have poor balance or stability. Sensible activities can now be performed as long as the precautions are observed: Avoid having the legs crossed in sitting. Standing on the operated leg and rotating the body is risky. Bending the hip more than 90 degrees should be avoided in such activities as sitting down quickly, sitting in low seats, crouching down or leaning forwards to the floor quickly. Inform a doctor if an infection develops in an area such as the teeth, bladder or chest, as these can track to a new joint.

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Physiotherapy management of knee injuries and knee operations requires a good way of applying cryotherapy to counter the swelling and pain involved. The Aircast Cryocuff gives physiotherapists this option as traditional ways of applying cold are clumsy and not very effective.

Knee injuries are very common in sports and vigorous activities and their acute physiotherapy management is very important for a good outcome and a speedy return to normal activities. Typical knee injuries and conditions managed by physiotherapists include meniscal tears (cartilage tears), medial collateral ligament damage, lateral collateral ligament damage, anterior cruciate ligament tears, patellar dislocation, total knee replacement and capsular injury.

The knee is the largest synovial joint in the body and when the joint is damaged it responds by becoming inflamed, increasing the metabolic rate of the tissues and secreting large amounts of synovial fluid into the joint. This can lead to a knee effusion, a large and tight swelling of the knee, at times called “water on the knee”. An effusion can be painful in itself and it inhibits normal muscle function, thereby interfering with muscle action and joint recovery.

Normal methods of applying compression and cooling have several difficulties:

Both cold and compression need to be provided and this is hard to achieve Most ice based methods do not cool the knee effectively The skin can however develop an ice burn from overcooling at ice temperatures Compression is difficult to provide along with the cooling Patients have difficulties keeping the cooling going for any length of time Cooling cannot easily be done whilst mobilizing.

Physiotherapy treatment priorities have always tended towards cooling the area to reduce the swelling, but prevention of the effusion by early compression may be more important. However, physios do need to provide cooling along with the compression.

The Aircast Cryocuff

The Aircast Cryocuff is a portable, convenient device for providing both compression and cooling for the management of acute or post-operative knee (or other joint) conditions. It consists of three parts:

The Bucket. This is a cylindrical plastic reservoir with a detachable lid. It is light and stable and inside there are levels cast in the plastic telling the physio how much ice to put in and where to fill up to with cold water. Once the bucket is prepared the lid is screwed on to give a watertight seal. The Hose. The insulated hose has a clipping system which allows it to be attached to the cuff easily and cleanly. The Cuff. This is the business end of the device. It is a wraparound cuff designed to fit the contours of the knee and comes in three sizes.

Physiotherapy Application of the Cryocuff

The physio will measure the size of the patient’s knee six inches above the top of the knee cap to choose the correct cuff size. The cuff is applied to the knee moderately tightly in an unfilled state and the Velcro tightened to make a good fit. It is very important to do this first as without this the compression benefits will not be realised.

Now the bucket is filled with cubed ice and cold water in the right proportions and the top screwed on firmly to prevent leakage. The hose is clipped to the cuff by pushing the connector into the cuff clip and then the bucket and hose assembly is held up above the knee, allowing the cold water to flow into the cuff by gravity. How high the physiotherapist holds the bucket and for how long has some effect on the tightness of the filled cuff.

The cuff stays cold for an hour or so and the patient can disconnect it from the hose and get on with normal life as able. To change the water the hose is reconnected to the cuff and the bucket put below cuff level to refill the bucket from the cuff, and then the bucket is turned over a few times to remix the water and ice. The process is repeated from the beginning, allowing the compression and cooling to be maintained continuously as the bucket water mixture remains cold enough for 6-8 hours before replenishment.

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Major joint replacement is one of the success stories of the late twentieth century, providing the greatest changes in quality of life measurements of all medical treatments or operations. Total knee replacement has now developed from a less predictable operation to a routine procedure with good long-term results for severely osteoarthritic joints. Populations in developed countries are rapidly getting older and total knee replacement is set to overtake total hip replacement as the most performed joint replacement.

Total knee replacement is one of the most successful medical technologies with the highest quality of life improvements of any medical intervention, a distinction it shares with total hip replacement. Knee replacement has matured from an experimental procedure of uncertain long-term outcome to a predictable and very common operation with very good results at ten years or more. As western populations age knee replacement is overtaking hip replacement as the most commonly performed joint replacement.

The osteoarthritic joint surfaces are precisely cut away in knee replacement and metal and plastic surfaces are substituted. These are:

Femoral component. This is a steel alloy and replaces the arthritic end of the thigh bone.

Tibial component. Again a steel alloy part and replaces the damaged tibial surface.

The plastic insert, made of ultra high density polyethylene, is placed between the femoral and tibial inserts.

A plastic button which fixes on to the posterior surface of the patella, without which some patients continue to complain of anterior knee pain after replacement.

These components are placed in position using cement which acts more like a grout than an adhesive.

Once the operation has been completed the physiotherapist must treat the consequences of the operation to ensure a successful outcome for the patient. Surgery causes pain, swelling, inflammation and muscle weakness and much of the early physiotherapy is targeted towards this. Initially the physio can use a Cryocuff, a refillable pressure cuff fitted closely to the knee, to reduce the swelling and to provide cold therapy over an extended period, reducing the pain and facilitating muscle action. Taking the painkillers regularly and static quadriceps exercises are encouraged hourly to re-establish muscular knee control and gentle knee flexion exercises to get the knee range of movement going.

The physiotherapist then gets the patient up, checking the operative record, reviewing the patient’s medical status and assessing the patient and their leg status. Muscular control of the knee must keep the knee stable while mobilising and epidurals can delay this by knocking out the muscular strength and feelings in the legs. A physio and an assistant gets the patient up walking for a short distance with a walking frame if they are older and with crutches if they are more stable. Operation instructions usually allow weight-bearing to facilitate normal muscle activity patterns and promote venous circulation.

Physiotherapy treatment as an outpatient includes working on the range of movement, muscle bulk and strength, balance and functional activities. Physios prescribe inner range quads to strengthen the knee extensors; knee flexion exercises to increase knee bend and knee hang to regain lost extension. Resisted knee flexion is used to increase range via reciprocal inhibition, the resisted movement causing the opposite muscle, the knee extensors, to relax and allow more knee bend. Resistance is provided by manual technique and by using resistance bands. The scar is best mobilised and freed up by tissue massage daily.

Further rehabilitation is more likely to take place in the gym, concentrating on functional activities such as moving from sitting to standing and step ups and strengthening work with Theraband and the gymnastic ball. Work on range of motion will continue using resisted exercises and static bicycling and patients can usefully work on proprioception using the wobble board and other balance related activities. Proprioception is the normal ability of a joint to sense its position in space and this is very important for normal activity and safe walking. Normal gait patterns are encouraged and abnormal patterns corrected.

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