How Long Does Sports Physiotherapy Take to Work for an ACL Tear?

The anterior cruciate ligament helps control forward movement and rotation of the knee. After a tear, physiotherapy may first target swelling, full knee straightening, bending, and safe walking. Later work develops thigh and hip strength, balance, landing control, and responses to direction changes. Some people follow rehabilitation before surgery, while others complete it before and after reconstruction; the plan also depends on other injured knee structures and sporting goals.

Attend reviews so exercises can be progressed when the knee is calm and movement is improving. Practise the prescribed programme with careful technique, and avoid pivoting, jumping, or return-to-sport tests before clearance. Record swelling, giving-way episodes, confidence on stairs, and how the knee responds the following day. A brace, walking aid, or modified training may be appropriate for a period decided by your clinician.

Contact your clinician promptly after a new giving-way episode, a locked knee, rapidly increasing swelling, severe pain, fever, wound changes after surgery, or calf swelling with chest symptoms. Arrange reassessment when progress stalls, exercises repeatedly provoke swelling, or you cannot achieve the movement and control targets set for your phase.

Ask which rehabilitation phase you are in, whether surgery is being considered, and which strength, balance, and hopping checks are required before sport. Clarify how to modify work or training and what knee swelling after exercise means for the next session.