Korean J Sports Med.  2021 Sep;39(3):127-130. 10.5763/kjsm.2021.39.3.127.

Irreducible Anterior Subluxation of the Ankle Joint Caused by Os Trigonum and Transverse Ligament: A Case Report

• Kyung MG

• KMID: 2519575
• DOI: http://doi.org/10.5763/kjsm.2021.39.3.127

Abstract

Ankle joint is a stable mortise structure, therefore pure ankle dislocation without ankle fracture is rare. Several adjacent anatomical structures have been reported as a cause of irreducible ankle dislocation. Author report a case of successful treatment of irreducible anterior subluxation of the ankle joint due to os trigonum and transverse ligament by closed reduction under anesthesia, and a review of the literature as well.

Keyword

Ankle joint; Joint dislocations; Talus; Ligaments

Figure

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  Fig. 1 Initial right ankle plain radiographs showing anterior subluxation of the ankle joint. Note that the ankle is in full plantar flexion state and os trigonum is present.

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  Fig. 2 Initial magnetic resonance imaging of right ankle after several trials of manual reduction at emergency room. Note the transverse ligament (arrow-heads) between posterior talar body and os trigonum.

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  Fig. 3 Intraoperative ankle plain radiograph showing stable mortise structure.

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  Fig. 4 Standing ankle plain radiographs of postoperative 3 months.

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  Fig. 5 Illustration of posterior ankle ligament structures.

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