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Effect of Direct Ligament Repair and Tenodesis Reconstruction on Simulated Subtalar Joint Instability
Julie Choisne1, Matthew C Hoch2, Ian Alexander3
11 Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA, USA.
Foot & Ankle International
|December 7, 2016
Summary
The Gould modification of the Broström procedure effectively restores subtalar and ankle joint kinematics after injury. Tenodesis also improves stability but restricts inversion more than the intact state.
Area of Science:
- Orthopedic surgery
- Biomechanics
- Sports medicine
Background:
- Subtalar instability is common in chronic ankle instability but often overlooked.
- The impact of surgical repairs on isolated subtalar instability requires further investigation.
Purpose of the Study:
- To evaluate the effects of the Gould modification of the Broström procedure and a novel tenodesis technique on ankle and subtalar joint kinematics following simulated subtalar injury.
Main Methods:
- Cadaveric ankle kinematic data were collected during inversion and internal rotation.
- Testing included intact, ligament-sectioned, post-Gould modification, and post-tenodesis states.
Main Results:
- The Gould modification significantly reduced subtalar and ankle inversion and subtalar internal rotation.
- Tenodesis restricted subtalar internal rotation and ankle inversion compared to the intact state.
Conclusions:
- Both procedures enhanced ankle complex stability.
- The Gould modification may be superior for restoring subtalar and ankle joint kinematics, while tenodesis showed limitations in restoring inversion.
