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Updated: Aug 9, 2025

Author Spotlight: Unraveling the Mechanobiology of Tendon Impingement – A Multiaxial Murine Hind Limb Explant Model
Published on: December 8, 2023
Peroneus brevis tear caused by an impingement between hypertrophied peroneal tubercle and lateral malleolus
Miki Morimoto1, Satoshi Yamaguchi1,2, Seji Kimura1
1Department of Orthopaedic surgery, Graduate School of Medical and Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba 260-8670, Japan.
Abstract:
We report a 15-year-old female patient who sustained peroneus brevis injury caused by an impingement between the hypertrophied peroneal tubercle and lateral malleolus. The patient had pain for 3 years in the lateral side of her left ankle with unsuccessful conservative treatment. The oblique sagittal images of 3-dimensional magnetic resonance imaging and ultrasonography were useful in depicting the peroneus brevis injury and identifying the location of impingement between the hypertrophied peroneal tubercle and the tip of the lateral malleolus. The flatfoot deformity of the patient further aggravated the impingement. The patient was treated surgically, with excision of the enlarged tubercle and tendon repair. The ankle pain resolved 12 months postoperatively. Although rare, clinicians should recognize this condition as the cause of lateral ankle pain.
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