When is ACL reconstruction recommended for an ACL tear?

ACL reconstruction may be recommended when knee instability, activity goals, associated injuries, and examination findings make ligament stabilisation useful. The choice is personal and depends on how the knee behaves, not simply on the tear being visible on a scan.

The anterior cruciate ligament helps control forward movement and rotation of the knee. A tear may cause swelling, pain, reduced confidence, or the feeling that the knee gives way. Assessment includes stability tests, strength and movement checks, and review of imaging for meniscus, cartilage, or other ligament injuries. Some people manage well with rehabilitation and activity adjustment; repeated giving-way, demanding pivoting activities, or additional damage can make reconstruction more useful.

Reduce movements that cause buckling, twisting, or swelling. Work on comfortable knee movement and follow a rehabilitation plan to settle swelling and restore strength before surgery when advised. Pre-operative physiotherapy can also clarify whether instability remains during everyday tasks. The ACL Tear page gives condition-focused background, while ACL Reconstruction covers the operation and recovery pathway.

Arrange prompt orthopaedic assessment after a twisting injury with rapid swelling, inability to bear weight, locking, or repeated giving-way. Seek urgent help for a deformed knee, an open injury, a cold or numb foot, or severe pain that is rapidly increasing. After diagnosis, report a newly locked knee or a sudden major change in function.

Ask whether instability is present on examination, whether the meniscus or cartilage is also injured, and what rehabilitation can achieve without surgery. If reconstruction is considered, discuss graft choices, timing, work and sport demands, and the milestones required before returning to pivoting activity.