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Ankle medial flexor retinaculum avulsion fracture
Steven D Lewis1, Felix S Chew1
1Department of Radiology, University of Washington, 4245 Roosevelt Way N.E., Seattle, WA 98105, USA.
Radiology Case Reports
|July 31, 2019
Summary
Rare medial flexor retinaculum periosteal avulsion fractures can occur with tibial fractures. Computed tomography imaging is key for diagnosis, revealing associated retinacular avulsion fractures and potential tibialis posterior tendon dislocation.
Area of Science:
- Orthopedic Surgery
- Radiology
- Sports Medicine
Background:
- Medial flexor retinaculum injuries are relatively common.
- Periosteal avulsion injuries of the medial flexor retinaculum are infrequent.
Observation:
- A patient presented with a medial flexor retinaculum tear.
- Computed tomography (CT) revealed an associated proximal retinacular avulsion fracture from the posteromedial tibia.
Findings:
- Medial flexor retinaculum tears can be linked to superficial deltoid pathology or medial malleolar fractures.
- A significant complication is anterior dislocation of the tibialis posterior tendon, indicating a fibro-osseous tunnel injury.
Implications:
- This case highlights a rare injury pattern of the medial flexor retinaculum.
- Accurate CT characterization is crucial for identifying associated fractures and tendon complications.
- Understanding these associations aids in appropriate diagnosis and management of ankle and lower leg injuries.
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