My knee still feels weak three months after physio. Is something wrong?

Common reasons the knee still feels weak

• Arthrogenic muscle inhibition: pain or swelling in the knee switches the quadriceps off through a nerve reflex, so the muscle cannot work fully even when you try
• Load that is too light: many home programmes stay at easy exercises like leg raises for too long, and muscle only grows when it is challenged close to fatigue
• Inconsistency: work, travel, the summer heat or Ramadan interrupt the routine and strength slips back
• Missing full straightening: a knee that does not fully straighten keeps the thigh working at a disadvantage
• The hip and calf: weak buttock and calf muscles make the knee feel unstable even when the thigh is improving

Three months is still early after ligament surgery or meniscus repair, when side-to-side differences in thigh strength are common.

What usually helps

Ask your physiotherapist to measure strength rather than rely on feel, for example comparing single-leg exercises or using a dynamometer. Then make sure the programme progresses: heavier leg press, split squats, step-downs and single-leg work, with fewer repetitions at a higher effort two to three times a week. Controlling swelling matters too, because a swollen knee will keep switching the muscle off.

In some cases a physiotherapist adds electrical muscle stimulation or blood-flow restriction training to help a stubborn quadriceps, where appropriate and supervised.

When weakness is a sign to see a surgeon

Book a review in Doha if the weakness comes with:

• The knee giving way during everyday turning or on stairs
• Swelling that returns after most sessions
• Locking, catching or a block to straightening or bending
• Pain that is increasing rather than settling

Dr. Gelber will examine the knee, check ligament stability and alignment, review your rehabilitation record and, if needed, arrange imaging to look for a retear, a loose fragment or graft problems.