Rehabilitation After an ACL Tear

The anterior cruciate ligament (ACL) is the main ligament that controls the knee's rotation and forward-sliding movement. It usually tears in sports with sudden changes of direction, like football, basketball, or skiing, often with a non-contact movement. As much as the tear itself, the rehabilitation that follows determines the knee's future.

Is surgery necessary?

Not every ACL tear needs surgery. The decision is made based on the person's age, activity level, additional injuries in the knee (meniscus, other ligaments), and whether there's a sense of the knee "giving way." Surgery is often chosen for young athletes wanting to return to sports with sudden changes of direction; for a less demanding life, a strong rehabilitation programme alone may be enough. The decision belongs to the orthopaedic surgeon.

Pre-surgery rehabilitation (prehab)

Even if the surgical decision is made, the person doesn't go straight to the table. A preparation period is applied until knee swelling goes down and range of motion and muscle control return. Going into surgery with a strong knee noticeably eases what follows — this is one of the points with the clearest evidence.

After surgery: a staged journey

Rehabilitation is a measurement-based process spanning months:

• Early phase: controlling swelling, regaining range of motion, reactivating the thigh muscles.
• Middle phase: graded strength, single-leg control and balance.
• Late phase: running, jump-landing control, changing direction.
• Return to sport: decided not by feel but by tests — the strength and jump symmetry between the two legs is measured.

Why isn't it rushed?

Returning to sport early and unprepared is the most common cause of re-injury. The knee may "not hurt," but if strength and control aren't adequate, the ligament is at risk again. That's why the return decision rests on measured readiness, not on time elapsed.

Frequently asked questions

Can sport be done without an ACL?

In some low-to-moderate-demand disciplines, it may be possible with a strong strength and control programme; the decision is made together with the orthopaedic surgeon.

Should the other leg be strengthened too?

Yes — since the strength and control of the sound leg is the comparison benchmark, it's tracked regularly, and if it's found to be weak, it's included in the programme too.

Fzt. Bilal Kara runs the ACL process on a measurement basis from before surgery to return to sport; each stage is checked with tests. You can find more detail on ACL rehabilitation here or book an appointment.