Is ACL reconstruction needed before post-operative rehabilitation?

ACL reconstruction is the operation that rebuilds a damaged ligament. Post-operative rehabilitation is the supervised recovery process after that operation. It commonly addresses pain and swelling, knee motion, walking, muscle activation, strength, balance, and gradual return to daily activities.

You do not need to wait until surgery to seek rehabilitation advice. Preoperative physiotherapy may help reduce swelling, restore movement, and improve muscle control. If surgery is not recommended, a clinician can discuss a non-operative rehabilitation pathway instead.

Ask the treating team which phase applies to you and what restrictions follow any procedure. Before surgery, avoid exercises that cause giving way or a large increase in swelling. After surgery, attend the planned reviews and practise only the prescribed movements, walking progression, and strengthening work.

Read about [Post-Operative Rehabilitation](/treatments/physiotherapy-and-rehabilitation/post-operative-rehabilitation/) and [ACL Reconstruction](/treatments/sports-and-arthroscopic-surgery/acl-reconstruction/) to see how treatment and recovery fit together.

After surgery, seek prompt advice for fever, wound drainage, increasing redness, severe calf pain or swelling, chest pain, or breathlessness. Contact the team if the knee suddenly locks, repeatedly gives way, becomes much more swollen, or loses movement despite following the rehabilitation plan.

Do I need surgery, or is supervised rehabilitation appropriate first? What should I achieve before the operation? Which exercises are safe in each phase? How will you measure progress, and what finding would require a change to the plan?