Revision ACL Reconstruction in Reading — Single-Stage and Two-Stage Surgery

    Revision ACL surgery is performed when a previous ACL reconstruction has failed to restore stability or the graft has stretched, ruptured, or malpositioned. As a consultant knee surgeon based at Circle Reading Hospital, Mr Sam Nahas specialises in both single-stage and two-stage revision ACL reconstruction. Patients receive consultations within a week, rapid imaging, and a personalised surgical plan based on the condition of their knee and previous tunnels.

    Advanced arthroscopic revision ACL reconstruction surgery

    Common reasons for graft failure

    Graft re-rupture due to trauma

    Malpositioned tunnels from prior surgery

    Hardware or fixation issues

    Biological failure or poor graft incorporation

    Associated meniscal or cartilage injury

    Anatomical variation

    Patients often describe recurrent giving way, pain, or loss of confidence in the knee during twisting or pivoting movements. These symptoms can be reliably corrected with a structured revision approach.

    Single-stage vs two-stage revision ACL reconstruction

    The decision between a single-stage or two-stage operation depends on the quality and position of the existing bone tunnels.

    In a single-stage procedure, both the graft removal and new reconstruction are performed at the same time.

    In some cases, the tunnels are too wide or poorly positioned, making it unsafe to place a new graft immediately. In these cases, Mr Nahas performs a two-stage reconstruction.

    The two-stage process explained

    The first stage involves bone grafting the old tunnel in the tibia (shin bone) and sometimes the femur. Mr Nahas often explains this with a simple analogy:

    "If there's a hole in a wall where a screw once sat and you want to put up a new shelf, you can't just re-use the same damaged hole. You first need to fill it with polyfiller, let it harden, and then drill a fresh, strong hole for the new screw. ACL revision surgery follows the same principle — we graft the tunnel, let the bone heal, and then create a new, stable channel for the new ligament."

    After the grafted bone has fully healed, typically a few months later, the second stage reconstruction is performed using the new, properly aligned tunnels.

    Graft options for revision ACL surgery

    Revision procedures require careful graft selection. Depending on previous grafts used, available tendons, and patient preference, options include:

    • Autograft (using your own tissue)

    • Allograft (using donor tissue from another person)

    In some cases, particularly where previous grafts or tissues have already been used, an allograft may be the best option. All graft choices and their benefits are discussed with every patient in detail prior to surgery.

    Advanced imaging for surgical planning

    High-resolution MRI and sometimes CT scans are arranged to assess tunnel position and bone quality. This determines whether single- or two-stage surgery is required.

    Patients benefit from rapid access to imaging — typically within a week of consultation.

    Recovery pathway

    The rehabilitation process after revision ACL reconstruction follows a similar timeline to primary ACL surgery.

    Weight bearing

    Same or next day in most cases

    Physiotherapy

    Begins straight away

    Running

    4 months

    Return to sport

    9–12 months (individualised)

    Each patient follows a recovery pathway designed for safe healing and return to full activity. The recovery pathway is tailored to each individual's lifestyle and sporting goals. Recovery is criteria-based and not actually based on a fixed time. What this means is you are not allowed to progress to the next phase of rehabilitation if your knee or muscles are not ready. Each patient's timeline will differ depending on progress, and results are not guaranteed as per this timeline. These are approximate estimates.

    Expertise in complex and revision knee surgery

    Fellowship-trained, knee-only consultant

    Regularly manages complex and revision ligament cases

    Proven outcomes supported by registry data

    Operates at Circle Reading Hospital, a centre of excellence for orthopaedic surgery

    Experience working with professional athletes and demanding sport injuries

    Self-pay pricing and rapid access

    Patients can book directly for consultations within a week without a GP referral. Self-pay packages are available with transparent pricing.

    Book a private revision ACL assessment in Reading

    Where surgery is performed

    Revision ACL reconstruction is carried out at Circle Reading Hospital, with easy access from Berkshire, Wokingham, Henley, Oxford, Maidenhead, and Bracknell.

    Insurance, referrals and access

    Recognised insurers: AXA Health, Bupa, Aviva, WPA, Vitality, Allianz, Healix. Mr Nahas is fee-assured with all major UK health insurers.

    GP referral: not required for self-pay consultations. Most insurers do require one — we can guide you through it.

    Waiting time: consultations are usually available within a week, with MRI arranged rapidly where indicated.

    Insured patients · Self-pay · Book a consultation

    Clinical content reviewed by Mr Sam Nahas, Consultant Knee Surgeon (GMC 7138356). Last reviewed: . This page is for general information and does not replace individual medical advice.