Knee Replacement
Mobility and pain relief after knee replacement
What is this surgery?
In a total knee replacement, the worn joint is replaced with a metal alloy and polyethylene that mimic the natural joint surface. The procedure lasts about 1–2 hours and is most often performed for severe knee arthritis. With good aftercare, the new joint can last 15–25 years. Structured rehabilitation is crucial: the knee must be actively 're-programmed' after surgery so that muscles and the nervous system work harmoniously again.
Why is rehabilitation essential?
- Faster restoration of knee flexion (goal: 90°+)
- Prevent and reverse quadriceps atrophy
- Pain control without excessive medication
- Normalise gait pattern
- Minimise fall risk
Treatment objectives
- 120°+ knee flexion for normal sitting
- Full knee extension
- Pain-free walking on flat ground
- Two-legged stair climbing
- Light sport (swimming, aqua-jogging, cycling)
What to expect?
Weeks 1–2: Early Recovery
Pain and swelling are strongest at this stage. Knee flexion is limited to 40–60°. Walking aids are necessary. Physiotherapy starts immediately after surgery with passive mobilisation.
Weeks 3–8: Restoring Mobility
Knee flexion improves gradually. Goal: 90° by week 6. Strengthening exercises begin. Most patients can walk with one stick or without aids. Cycling ergometer is cleared.
Weeks 9–14: Functional Rehabilitation
Stair climbing, squats, sport-specific training. Target: 120° knee flexion. Pain is minimal in daily life. Swimming and cycling to strengthen the cardiovascular system.
Our treatment programme
Phase 1 — Weeks 1–4
- Cryotherapy & oedema reduction
- Passive knee flexion/extension
- Isometric quadriceps exercises
- Gait training
Phase 2 — Weeks 5–8
- Assisted squats
- Cycling ergometer (low resistance)
- Proprioceptive exercises
- Swimming allowed
Phase 3 — Weeks 9–14
- Two-legged stair climbing
- Light jogging (with medical clearance)
- Functional sport exercises
- Full daily capacity
Risks without structured rehabilitation
- Permanent quadriceps strength loss
- Contracture and range of motion restriction
- Increased thrombosis risk with immobility
- Prolonged pain and painkiller dependency
Ready for your rehabilitation?
Book an initial assessment — we create your personalised programme.