Total knee replacement (TKR) is one of the most effective orthopaedic procedures for end-stage knee pain caused by severe knee osteoarthritis, trauma, or inflammatory arthritis. But surgery alone does not restore function – physiotherapy does. The quality and consistency of your rehabilitation determines how well you walk, climb stairs, and return to daily life. This week-by-week plan outlines what to expect at each stage, which exercises matter most, and what to avoid.
Why Physiotherapy Is Non-Negotiable After TKR
TKR replaces damaged joint surfaces but cannot automatically restore the muscle strength, movement patterns, and proprioception lost during years of degeneration. Without structured rehab, patients commonly end up with persistent stiffness, quad weakness, and impaired walking. Scar tissue forms rapidly in the first few weeks post-surgery – if the knee is not moved consistently and progressively, those adhesions can permanently restrict flexion. Physiotherapy is not an optional add-on; it is how the surgery delivers its full benefit.
At a Glance: TKR Rehab Timeline
Use this table as a quick reference. Each phase is explained in detail below.
| Phase | Key Goals | Core Exercises |
| Week 1-2 | Reduce swelling, ROM to 90°, independent transfers, walker ambulation | Ankle pumps, quad sets, heel slides, straight leg raises, TKEs |
| Week 3-4 | ROM to 100-110°, transition to stick, stair negotiation with rail | Resistance-band TKEs, lateral leg raises, wall slides, low step-ups |
| Week 5-6 | Full weight-bearing, ROM 110°+, outdoor independence | Leg press, mini squats, balance board, aquatic therapy |
| Week 7-8 | Normal gait, stair endurance, return to daily activities | Progressive resistance, functional movement patterns |
| Week 9-12 | ROM 120°+, low-impact sports, maintenance programme | Cycling, swimming, advanced balance training |
Weeks 1-2: Hospital and Early Home Phase
Physiotherapy begins within 24 hours of surgery. The primary goals in this fortnight are controlling swelling, preventing scar tissue from locking the joint, and restoring enough movement and strength for safe basic mobility.
Key Exercises
- Ankle pumps – every hour to prevent DVT and reduce lower-limb swelling.
- Quad sets – press the back of the knee into the bed for five seconds to reactivate the quadriceps, which are significantly inhibited post-surgery.
- Heel slides – slide the heel toward the buttocks to gain early flexion range.
- Terminal knee extensions (TKE) – press the knee to full straightening. Full extension is as important as flexion and harder to correct later if neglected.
- Straight leg raises – strengthen the quad and hip flexors without loading the new joint.
At home, elevate the leg above heart level when resting, apply ice for 15-20 minutes after exercise, and use compression as advised. Most patients transition from a walker to forearm crutches by the end of week two.
Weeks 3-4: Progressive Weight-Bearing
By week three, acute swelling has reduced and the focus shifts to improving range of motion and beginning meaningful strengthening. Flexion should reach 100-110 degrees. Many patients begin walking short indoor distances without a gait aid.
- Resistance-band TKEs – build controlled quad activation essential for a stable walking pattern.
- Lateral leg raises – strengthen hip abductors to prevent a sideways dip in the pelvis during walking.
- Wall slides – a light closed-chain exercise to begin loading the joint in a controlled position.
- Step-ups (low, 5-10 cm) – the foundational exercise for stair-negotiation capacity.
- Treadmill walking (flat, slow) – provides consistent gait training with measurable distance targets.
Weeks 5-6: Strength Building and Stability
This phase is critical. Quad weakness is the most common residual impairment after TKR and the strongest predictor of poor outcomes at twelve months. Patients are now fully weight-bearing and ready for more demanding exercises. Aquatic physiotherapy, where wounds have fully healed, is particularly valuable – buoyancy offloads the joint while water resistance provides a strengthening stimulus. For patients who experienced hip pain pre-operatively, hip strengthening becomes equally important at this stage to correct compensatory movement patterns.
- Seated leg press (light load) – directly targets quads from 70-80° of flexion to full extension.
- Mini squats (0-45°) – progressed gradually as strength improves.
- Balance board or foam pad standing – rebuilds proprioception, which is disrupted when native joint surfaces are replaced.
Weeks 7-8: Functional Recovery
Most patients have returned to household tasks, short car journeys, and social activities. The focus now is on gait normalisation – eliminating the protective limp – and building the endurance to sustain activity. Progressive resistance loads are increased systematically, step-up heights are progressed, and functional movement patterns (reaching, turning, rising from low seating) are practised in sessions.
Weeks 9-12: Return to Daily Life
By three months, most patients achieve near-normal function for daily activities. Flexion typically reaches 120 degrees or more. Formal physiotherapy reduces in frequency, transitioning to a supervised home maintenance programme. Low-impact activities such as swimming, cycling, and walking programmes are encouraged. High-impact activities – running and contact sports – are generally not recommended as they accelerate implant wear. For context on long-term joint health, see our guide on non-surgical knee osteoarthritis treatment.
Common Rehab Mistakes That Set Recovery Back
Stopping physiotherapy too early: Many patients feel significantly better by weeks six to eight and quit formal rehab. This is the single most costly mistake. The six-to-twelve-week window is when the most significant strength gains are possible.
Fear-avoidance of movement: Post-surgical pain does not mean the joint is being damaged. Refusing to move because it hurts causes stiffness, muscle wasting, and a significantly worse outcome.
Neglecting extension: Everyone focuses on flexion. A five-degree extension deficit causes lasting gait abnormality and knee pain with prolonged standing. Full straightening must be maintained from day one.
Overloading too fast: Pushing too hard in weeks one to three causes reactive swelling flares that set rehabilitation back by days. Graded progression is faster overall than aggressive early loading.
“The patients who achieve the best results after total knee replacement are not necessarily those with the best surgery – they are the ones who commit to rehabilitation from day one and do not let up. Stopping rehab because the knee feels good enough, and avoiding movement out of fear of pain – both lead to outcomes that fall short of what the procedure was capable of delivering.”
— Dr. Rohit Gulati, Interventional Pain Specialist, Nivaan Care
Warning Signs: When to Call Your Doctor
While discomfort is expected, the following require prompt medical attention:
- Sudden marked increase in swelling compared to the previous day
- Calf pain, redness, or warmth (potential deep vein thrombosis)
- Shortness of breath or chest pain – call emergency services immediately
- Fever above 38°C, increasing redness at the wound, or discharge (infection)
- Pain that consistently worsens rather than improves after the first two weeks
Get Expert Rehabilitation Support at Nivaan Care
Generic exercise sheets are a starting point, not a plan. A physiotherapist who assesses your range of motion at each session, corrects compensatory movement patterns, and adjusts loading based on your response makes a measurable difference in outcomes. At Nivaan Care, our team of pain management specialists and rehabilitation practitioners provides structured, monitored, individualised care from day one through to long-term maintenance. If your post-TKR recovery is not progressing as expected, or if you want to establish a comprehensive plan before surgery, book a consultation with Nivaan Care today.
Preparing for or recovering from total knee replacement? Book a consultation with Nivaan Care’s specialists for a personalised physiotherapy plan built around your goals.