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Lateral Ligament Reconstruction: Surgery & Rehab

Lateral ligament reconstruction is a surgical procedure to restore the stabilising ligaments on the outer side of the ankle joint in cases of chronic instability.

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Lateral ligament reconstruction is a surgical procedure to restore the stabilising ligaments on the outer side of the ankle joint in cases of chronic instability.

What is lateral ligament reconstruction?

Lateral ligament reconstruction is a surgical procedure aimed at restoring the stabilising ligaments on the outer (lateral) side of the ankle joint. It is primarily indicated when conservative treatments such as physiotherapy and orthotic support have failed to resolve chronic lateral ankle instability. The goal is to permanently restore mechanical joint stability and prevent recurrent ankle sprains.

Causes and Indications

The most common cause leading to lateral ligament reconstruction is chronic lateral ankle instability, which develops following repeated inversion injuries (rolling of the ankle outward). The ligaments most frequently affected include:

Anterior talofibular ligament (ATFL): The most commonly injured ligament
Calcaneofibular ligament (CFL): Involved in more severe injuries
Posterior talofibular ligament (PTFL): Less commonly affected

Surgery is indicated when:

Conservative treatment over at least 3–6 months has not achieved sufficient stability
Significant mechanical instability is confirmed clinically and through imaging
The patient is physically active with high functional demands on the joint
Recurrent sprains are causing significant impairment in daily activities

Surgical Techniques

Anatomical reconstruction: Brostrom-Gould procedure

The most widely used technique is the modified Brostrom-Gould procedure. In this approach, the stretched or partially torn ligaments are shortened, tightened, and reattached to the fibula using sutures. The inferior extensor retinaculum is additionally incorporated as a reinforcing layer over the reconstructed ligaments. This technique is considered the gold standard for lateral ankle ligament reconstruction.

Reconstruction with tendon graft

When native tissue is insufficient -- for example after multiple previous surgeries -- a tendon graft may be used. Common donor tendons include the plantaris tendon, the gracilis tendon, or synthetic implants. The graft is passed through bone tunnels in the fibula and talus and secured in place.

Arthroscopically assisted techniques

Increasingly, minimally invasive, arthroscopically assisted approaches are being used. These require smaller incisions, promote faster wound healing, and spare the surrounding soft tissue. Suture anchor systems are commonly employed to reattach the ligaments to bone.

Diagnosis and Pre-operative Assessment

A thorough pre-operative work-up is essential:

Clinical examination: Anterior drawer test and talar tilt test to assess ligament integrity
X-ray: Stress radiographs to measure the talar tilt angle
MRI (magnetic resonance imaging): Detailed visualisation of ligament structures and associated injuries
Arthroscopy: Can be used simultaneously for diagnosis and treatment of intra-articular pathologies

Post-operative Care and Rehabilitation

A structured rehabilitation programme is essential for a successful outcome after lateral ligament reconstruction:

Weeks 0–2: Immobilisation in a below-knee cast or walker boot, partial weight-bearing
Weeks 2–6: Gradual progression to full weight-bearing, initiation of physiotherapy
Weeks 6–12: Strengthening exercises, proprioceptive training, and gait retraining
From months 3–4: Sport-specific training and return to sport following medical clearance

Full return to sporting activity is typically achieved within 4–6 months after surgery.

Risks and Complications

As with any surgical procedure, lateral ligament reconstruction carries potential risks:

Wound healing complications or infection
Nerve injury (e.g., superficial peroneal nerve)
Scar formation and restricted range of motion
Overcorrection leading to limited mobility
Recurrent instability in the long term
General surgical risks (thrombosis, anaesthetic complications)

Prognosis

The overall success rates of lateral ligament reconstruction are very good. Studies show that more than 85% of patients following the modified Brostrom-Gould procedure achieve long-term pain relief and stability, with the majority returning to their previous level of sport. Prognosis is particularly favourable in competitive athletes and physically active individuals.

References

Gould N, Seligson D, Gassman J. Early and late repair of lateral ligament of the ankle. Foot Ankle. 1980;1(2):84–89.
Vuurberg G et al. Diagnosis, treatment and prevention of ankle sprains: update of an evidence-based clinical guideline. British Journal of Sports Medicine. 2018;52(15):956.
Karlsson J, Eriksson BI, Bergsten T. Comparison of two anatomic reconstructions for chronic lateral instability of the ankle joint. American Journal of Sports Medicine. 1997;25(1):48–53.

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