Posterolateral Instability of the Knee by Popliteus Tendon and LCL Avulsion Fracture. A Case Report.

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  • 膝外側側副靭帯,膝か筋けん損傷によりposterolateral instabilityをきたした1例

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We report a case with an unusual pattern of posterolateral instability of the knee in an 18-year-old male who sustained an injury of the popliteus tendon and LCL after a motorcycle accident. This was associated with a patellar subluxation, but not combined rupture of the cruciate ligaments.<br>Fujikawa et al. showed that the injury was produced by external rotation and posterior forces on a flexed knee. Open reduction and internal fixation are used in order to achieve anatomic reduction.<br>Fourteen months after operation the fracture was healed with good functional results.

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