Procedure Guide

Revision ACL Reconstruction

A second chance at a stable knee — planned in detail.

When a first ACL reconstruction has failed, revision surgery rebuilds the ligament again. It demands more planning: tunnel position, graft choice, alignment and meniscus status all have to be addressed.

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3D Animation (1:12)Watch how a revision ACL reconstruction is performed

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Learn about the procedure

Watch. Understand. Feel Confident.

1:12

Revision ACL Reconstruction — 3D Animation

See how the procedure is performed step-by-step in this animation.

1:04

Revision Technique (Real Footage)

For medical professionals: the surgical technique of a revision ACL reconstruction, step by step.

For Medical Professionals

1:22

Recovery After Revision ACL Surgery

Why revision rehabilitation is slower, and what the return-to-sport milestones look like.

Arthroscopic

1 Night Stay

90–120 Minutes

Staged if Needed

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Surgical Steps (Overview)

Failure Analysis

CT and MRI define tunnel position, widening and any missed injury.

Tunnel Management

Old fixation is removed; tunnels are cleared or bone-grafted.

Graft Selection

A robust graft is chosen — often quadriceps, patellar tendon or allograft.

Anatomical Reconstruction

New tunnels are placed in the correct anatomical footprint.

Additional Procedures

Meniscus repair, extra-articular tenodesis or osteotomy as required.

Recovery Timeline (Step by Step)

Week 1–2Swelling control · Protected weight bearing · Quadriceps activation

Week 3–6Full range of motion · Progressive loading · Brace as prescribed

Week 6–12Strength building · Cycling · Closed-chain training

Month 4–6Running progression · Change of direction drills

Month 9–12Criteria-based return to pivoting sport*

Overview

A failed ACL reconstruction has a reason — a non-anatomical tunnel, an untreated meniscus or slope problem, rotational instability, or simply a new injury. Revision surgery starts by finding that reason.

Depending on the findings the surgery is done in one stage, or in two when tunnels first need bone grafting. The added procedures matter as much as the graft itself.

Is revision ACL reconstruction right for you?

Recurrent instability after a previous ACL reconstruction
Graft rupture confirmed on MRI
Poorly positioned tunnels or failed fixation
Instability combined with meniscus or alignment problems

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Preparing for surgery

Full imaging work-upCT for tunnels, MRI for the graft, long-leg X-rays for alignment
PrehabilitationRestore full motion and quadriceps strength before surgery
Staging discussionWe agree together whether one or two stages is safer
Rehab planningBook physiotherapy in advance — revision rehab is longer

“

Revision surgery is detective work before it is carpentry. If we do not understand why the first graft failed, we simply repeat the mistake. Correct the cause, and the second reconstruction is far more reliable.

Dr. Yousef Muhammad

Consultant Orthopaedic Surgeon

Questions & Answers

Why did my first ACL fail?

Common reasons are tunnel malposition, an untreated meniscus or rotational instability, a steep tibial slope, incomplete rehabilitation, or a genuine new injury. The work-up identifies which applies to you.

Will I need two operations?

Only if the existing tunnels are too wide or badly placed to reuse. Then bone grafting is done first and the reconstruction around six months later.

Which graft is used?

Usually a stronger graft than the first time — commonly quadriceps or patellar tendon, sometimes an allograft. The choice depends on what remains available.

Can I return to competitive sport?

Many patients do, though return rates are lower than after a primary reconstruction and the timeline is longer — typically 9 to 12 months or more.

Is the recovery different?

Yes, it is more cautious. Additional procedures such as meniscus repair or osteotomy also shape the rehabilitation plan.

What are the risks?

Stiffness, persistent laxity, infection and blood clots. Risks are somewhat higher than in primary surgery, which is why planning is so detailed.

Note: This information is for general education only and should not replace a consultation with your doctor.

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