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Updated: Jul 17, 2026
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Evaluating Postural Control and Lower-extremity Muscle Activation in Individuals with Chronic Ankle Instability
Published on: September 18, 2020
Hindfoot instability in cavovarus deformity: static and dynamic balancing
Patrick Vienne1, Ralph Schöniger, Naeder Helmy
1Uniklinik Balgrist, Orthopaedics, Forchstrasse 340, Zurich, 8008, Switzerland. patrick.vienne@balgrist.ch
Foot & Ankle International
|January 30, 2007
Summary
Recurrent lateral ankle instability can be effectively treated with a combined surgical approach addressing hindfoot alignment and dynamic muscle support. This method significantly improves patient satisfaction and ankle function.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomechanics
Background:
- Chronic lateral ankle instability is often linked to hindfoot varus deformity, peroneus longus hyperactivity, and lateral ligament insufficiency.
- Recurrence of instability can occur if all contributing factors are not addressed surgically.
- A novel approach for diagnosing and treating recurrent lateral ankle instability is presented.
Purpose of the Study:
- To present a diagnostic and treatment strategy for recurrent chronic lateral ankle instability.
- To evaluate the efficacy of a combined surgical approach for complex ankle instability.
Main Methods:
- Eight patients with recurrent chronic lateral ankle instability underwent surgery.
- Procedures included lateralizing calcaneal osteotomy, peroneus longus to peroneus brevis tendon transfer, and Broström ligament reconstruction in select cases.
- Patients were evaluated using the American Orthopaedic Foot and Ankle Society (AOFAS) Score pre- and post-operatively.
Main Results:
- All patients reported satisfaction with the surgical outcomes.
- The average AOFAS Score improved significantly from 57 preoperatively to 87 postoperatively.
- Hindfoot alignment was successfully corrected to a valgus position.
Conclusions:
- Recurrent lateral ankle instability is frequently associated with hindfoot malalignment, causing functional deficits.
- A comprehensive surgical plan addressing static and dynamic components is crucial for successful treatment.
- This combined operative approach shows promising preliminary results for recurrent lateral ankle instability.
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