Expert Knee Replacement Physiotherapy in Leigh — Delivered to Your Home

Knee replacement surgery (total knee arthroplasty) is performed to relieve pain and restore function in a severely damaged knee joint. As with hip replacement, osteoarthritis is the most common underlying cause. The progressive loss of cartilage from the joint surfaces leads to bone-on-bone contact, causing pain, inflammation, stiffness, and deformity.

Rheumatoid arthritis and other inflammatory conditions can cause similar joint damage through chronic inflammation, eventually requiring surgical intervention. Post-traumatic arthritis — arthritis developing after a knee injury such as a fracture or ligament tear — is another cause, particularly in younger patients who have had significant knee injuries.

Knee deformities contribute to the need for replacement. Severe bow-leg (varus) or knock-knee (valgus) deformities create abnormal loading patterns that accelerate joint wear. If these deformities are not corrected, they can lead to progressive joint damage requiring replacement. Avascular necrosis, though less common in the knee than the hip, can also necessitate replacement.

The decision to proceed with knee replacement is made when conservative treatments — physiotherapy, medication, injections, weight management, activity modification — no longer provide adequate relief. Patients typically experience progressive pain and functional limitation over years, reaching a point where the impact on quality of life justifies surgery. Post-surgical rehabilitation is even more critical after knee replacement than hip replacement, as knee recovery requires more active participation to achieve optimal range of motion.

The primary symptom leading to knee replacement is persistent, severe knee pain. This pain is typically felt deep in the joint and worsens with weight-bearing activity. Initially, pain improves with rest, but as arthritis progresses, pain becomes more constant, occurring at rest and at night, often disrupting sleep.

Stiffness is a characteristic symptom. Difficulty straightening the knee fully (extension lag) or bending it adequately (flexion limitation) affects daily activities. Many patients notice difficulty with stairs, particularly going down, and struggle to rise from low chairs or the toilet. Morning stiffness that takes time to ease is common.

Swelling is frequently present, varying with activity levels. The knee may feel warm to the touch after exertion. Some patients experience clicking, grinding, or locking of the knee, indicating loose fragments or irregular joint surfaces.

Functional decline accompanies these symptoms. Walking distance decreases, activities become limited, and many patients give up hobbies and social activities. A progressive limp may develop as the body compensates for pain and stiffness. Some patients notice increasing deformity — the knee becoming more bow-legged or knock-kneed. When these symptoms significantly impact quality of life and conservative treatments are no longer effective, knee replacement offers excellent outcomes, particularly with dedicated post-operative rehabilitation.

Knee replacement surgery is diagnosed through orthopaedic assessment, including X-rays to evaluate the extent of joint damage and any deformity. Post-operatively, physiotherapy assessment focuses on monitoring recovery, identifying complications, and guiding rehabilitation.

Your physiotherapist will review your surgical details — whether you had a total or partial knee replacement, the surgical approach, type of prosthesis, any complications, and your surgeon's specific rehabilitation protocol. Unlike hip replacement, knee replacement does not typically require movement precautions, but specific rehabilitation protocols guide the pace of recovery.

Physical assessment evaluates wound healing, swelling (measuring circumference to track reduction), and signs of complications. Range of motion testing is critical — measuring both extension (the ability to straighten the knee) and flexion (the ability to bend it). Achieving good range of motion, particularly full extension, is one of the most important goals of knee rehabilitation.

Strength testing evaluates the quadriceps (the muscles on the front of the thigh, which are critical for knee stability and straightening), hamstrings, calf muscles, and hip muscles. Quadriceps weakness is often significant after surgery and requires targeted strengthening. Gait analysis observes walking pattern, use of walking aids, and any compensatory movements.

At home, environmental assessment evaluates stairs, chair heights, bathroom access, and other factors affecting your ability to function safely during recovery. Recommendations for equipment and modifications are made as needed.

Knee replacement rehabilitation begins immediately after surgery, with early mobilisation in hospital. Unlike hip replacement, knee recovery is more dependent on active rehabilitation to achieve optimal range of motion. The first six weeks are particularly critical — scar tissue forms during this period, and if the knee is not regularly moved through its full range, permanent stiffness can result.

Exercise therapy progresses through stages. Early exercises focus on achieving full extension (using prolonged stretching and quad-setting exercises), gentle flexion (heel slides, wall slides), and quadriceps activation (isometric exercises, straight leg raises). Swelling management (ice, elevation, compression) is essential during this phase, as swelling limits range of motion.

As healing progresses, exercises advance to progressive strengthening — resisted exercises for the quadriceps, hamstrings, hips, and calves. Balance and proprioception exercises address the stability deficits that often accompany knee problems. Functional exercises practise stairs, squats, and step-ups. Gait training works on achieving a normal walking pattern, gradually reducing reliance on walking aids.

Manual therapy may include patellar mobilisation (moving the kneecap to prevent adhesions), soft tissue techniques for muscle tightness, and scar tissue mobilisation. Your physiotherapist will also provide guidance on pain management, swelling control, and activity progression.

Range of motion goals are typically: full extension by two weeks, ninety degrees flexion by two weeks, and one hundred to one hundred and ten degrees by six weeks. Individual progress varies, and your physiotherapist will guide your specific targets. Our post-hospital rehabilitation service provides additional support for complex recoveries.

Home-based knee replacement rehabilitation is particularly valuable, as the exercises and functional tasks can be practised in the environment where they matter most. In Leigh, our knee replacement physiotherapy service brings specialist post-operative care to your home, supporting your recovery from the early post-operative period through to full function.

Your physiotherapist will assess your home environment, ensuring it supports your recovery. Stair management is a key focus — your physiotherapist will teach the correct technique and practise on your actual staircase. Chair height, toilet access, and bed height are assessed, with recommendations for modifications or equipment such as a raised toilet seat.

Exercise sessions at home allow for intensive range of motion work — prolonged stretching for extension, heel slides for flexion, and progressive strengthening — in a comfortable, private setting. The home environment allows for frequent practice throughout the day, which is essential for maintaining and improving knee range of motion.

Gait training uses your actual walking surfaces and challenges. Functional training practises the specific tasks you need for independence — getting in and out of chairs, managing stairs, getting in and out of a car. Your physiotherapist will also teach family members how to assist safely and support your exercise programme.

The continuity of care from the same physiotherapist throughout your recovery ensures that your progress is tracked consistently and your programme is adjusted appropriately at each stage. The falls prevention service provides additional support for patients with balance concerns.

Knee replacement recovery follows a progressive timeline, with the most critical period being the first six weeks. The acute phase (weeks one to two) focuses on wound healing, managing pain and swelling, achieving full extension, and reaching at least ninety degrees of flexion. Walking with aids, basic transfers, and gentle exercises are the priorities.

The intensive rehabilitation phase (weeks three to six) focuses on progressive range of motion and strengthening. Flexion targets increase to one hundred to one hundred and ten degrees. Strengthening exercises become more challenging, and walking distance increases. Most patients transition from a frame to crutches to a stick during this period. This is the period of most intensive exercise — the effort invested here directly determines long-term range of motion and function.

The functional restoration phase (weeks six to twelve) focuses on normalising gait, building strength, and returning to daily activities. Most patients stop using walking aids around six weeks. Driving can typically resume at six weeks (check with your surgeon and insurance company). Exercises become more functional, incorporating stairs, squats, and balance work.

The full recovery phase (three to twelve months) sees continued improvement. Residual swelling gradually resolves, strength continues to build, and functional capacity improves. Most patients achieve their final range of motion by three months, though ongoing strengthening is recommended for optimal long-term results. The new knee can last fifteen to twenty years or more with appropriate care.

Knee replacement is a highly successful procedure, though outcomes are somewhat more variable than hip replacement, and patient satisfaction rates are slightly lower (approximately eighty-five to ninety per cent). This variability is largely related to the rehabilitation effort required — patients who fully engage with their physiotherapy achieve significantly better outcomes than those who do not.

Pain relief is typically excellent. Most patients experience dramatic reduction in their pre-operative pain, replaced by post-surgical pain that settles over several weeks. The chronic, debilitating pain of arthritis is usually gone, allowing return to activities that had become impossible.

Functional improvement is significant. Walking distance increases, stairs become manageable, and independence is restored. Most patients can return to low-impact activities including walking, swimming, cycling, golf, and gardening. As with hip replacement, high-impact activities are generally not recommended.

Range of motion outcomes vary. While most patients achieve functional range (enough for daily activities, typically one hundred to one hundred and fifteen degrees of flexion), not everyone achieves the range they had before arthritis, and some have residual stiffness. The effort invested in rehabilitation during the first six weeks is the strongest predictor of final range of motion. Long-term outcomes are excellent, with modern prostheses expected to last fifteen to twenty years or more.

Self-management after knee replacement focuses on maintaining range of motion, building and maintaining strength, and protecting your new joint long-term. Your physiotherapist will provide a home exercise programme that should be continued indefinitely — regular exercise is the most important factor in maintaining knee function and the longevity of the prosthesis.

Range of motion exercises should be continued regularly, particularly in the first three months. Even after full recovery, maintaining knee flexibility through regular stretching helps preserve function. Strengthening exercises, particularly for the quadriceps, should be a permanent part of your routine — strong muscles support and protect the joint.

Swelling may persist for several months after surgery. Continuing to use ice and elevation after activity helps manage this. Gradually increasing activity levels, rather than sudden increases, allows the knee to adapt without excessive swelling or discomfort.

Weight management is important for knee prosthesis longevity. The knee bears significant weight during all standing and walking activities, so maintaining a healthy weight reduces stress on the new joint. This is even more important for knee replacements than hip replacements.

Activity modification may be necessary long-term. Low-impact activities — swimming, cycling, walking, golf — are ideal. High-impact activities (running, jumping, contact sports) should generally be avoided. Listen to your knee; persistent pain or swelling after an activity suggests it may be too demanding. Regular check-ups with your surgical team ensure your prosthesis remains in good condition.

After knee replacement surgery, certain symptoms require urgent medical attention. Signs of infection — increasing redness, swelling, warmth, or wound discharge, accompanied by fever — require immediate assessment. Joint replacement infection is a serious complication requiring urgent treatment.

Deep vein thrombosis is a risk after knee surgery. Symptoms include calf swelling (particularly if one-sided and below the knee), warmth, and tenderness. Pulmonary embolism presents as sudden chest pain, breathlessness, or coughing blood and is a medical emergency. Blood-thinning medication and early mobilisation reduce this risk.

Stiffness that is not improving despite physiotherapy, or loss of range of motion that has been achieved, may indicate arthrofibrosis (excessive scar tissue formation). This requires assessment by your surgeon, as manipulation under anaesthesia or other interventions may be needed if it is identified early.

Loosening of the prosthesis, which can occur over months or years, presents as new pain, particularly on weight-bearing. Instability — a feeling that the knee might give way — should also be assessed. These symptoms may indicate the need for orthopaedic review and possible revision surgery.

Persistent or worsening pain, swelling that is not resolving, redness, or warmth should all prompt medical review. Any fall affecting the operated knee, particularly with new pain or inability to bear weight, requires urgent assessment to rule out damage to the prosthesis or the bone around it. When in doubt, contact your surgical team or physiotherapist.