Chronic Ankle Instability: Lateral Ligament Reconstruction

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Township, MI. Last updated April 2026.

Chronic ankle instability (CAI) affects approximately 40% of patients following acute lateral ankle sprain and is defined by recurrent episodes of giving way, persistent pain, and subjective instability lasting longer than 12 months. CAI is not simply undertreated acute sprain — it involves structural ligament laxity, proprioceptive deficits, and neuromuscular control impairment that each require specific targeted intervention.

Anatomy of the Lateral Ankle Ligament Complex

The lateral ankle ligament complex consists of three distinct structures: the anterior talofibular ligament (ATFL), the calcaneofibular ligament (CFL), and the posterior talofibular ligament (PTFL). The ATFL is the primary restraint against anterior talar translation with the ankle in plantarflexion and is the most commonly injured ligament in inversion sprains, torn in up to 85% of Grade III sprains. The CFL resists inversion with the ankle in neutral dorsiflexion and is co-injured with the ATFL in approximately 50–75% of severe sprains.

Pathomechanics and Proprioceptive Deficit

Chronic instability involves both mechanical laxity (elongated or torn ligaments failing to provide joint stability) and functional instability (impaired proprioception, delayed peroneal muscle reaction time, and altered neuromuscular control). Proprioceptive deficit — detectable as impaired single-leg balance and delayed muscle latency — persists even after ligamentous healing and is a primary driver of recurrent giving way. Rehabilitation must address proprioceptive and neuromuscular deficits explicitly to prevent recurrent instability.

Non-Surgical Management

Structured rehabilitation combining balance and proprioception training (perturbation training, wobble board), peroneal muscle strengthening, and sport-specific functional progression resolves CAI in 60–75% of patients who complete a supervised 8–12 week program. Ankle bracing (semi-rigid or lace-up) provides external mechanical support during athletics and reduces re-sprain risk by 50% in return-to-sport scenarios. Custom orthotics correcting hindfoot valgus reduce ligament stress during activity and complement rehabilitation.

Surgical Reconstruction: Broström-Gould Procedure

The modified Broström-Gould anatomic repair is the gold standard surgical procedure for CAI, achieving excellent outcomes in 85–95% of patients in long-term follow-up studies. The procedure directly repairs and imbricated the ATFL and CFL to the fibular periosteum, with augmentation of the repair using the inferior extensor retinaculum (Gould modification) to improve mechanical strength and restore proprioceptive afferents. The anatomic repair preserves normal subtalar kinematics — a key advantage over tenodesis reconstructions that alter joint mechanics.

Augmented Repair and Allograft Reconstruction

In patients with attenuated tissue quality, failed prior repair, hyperlaxity syndromes (Ehlers-Danlos), or large body habitus, augmentation with InternalBrace suture tape or allograft reconstruction provides supplemental mechanical support beyond tissue repair alone. The InternalBrace augmented Broström technique has shown equivalent early outcomes to standard repair with potentially faster return to sport, though long-term comparative data are still accumulating.

Ankle Instability Care at Balance Foot & Ankle

Dr. Biernacki at Balance Foot & Ankle evaluates chronic ankle instability with stress radiographs and ultrasound-based ligament assessment, coordinating MRI when associated intra-articular pathology (OCD, synovitis) is suspected. Structured rehabilitation protocols and surgical correction are both available within the practice. Call (810) 206-1402 to book an evaluation if your ankle keeps giving way.

In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your ankle sprains, our podiatry team at Balance Foot & Ankle can help with expert evaluations and advanced in-office care.

The most important clinical decision with Chronic Ankle Instability Lateral Ligament Reconstruction Guide isn't which treatment to start with — it's which subtype or underlying cause you actually have. Our podiatrists regularly see patients who've been treated for months for the wrong diagnosis. The correct identification changes the entire treatment path. Call (810) 206-1402 — Dr. Tom evaluates this condition at both Howell and Bloomfield Township locations.