syndesmotic injury
Pronunciation: sin-dez-MOT-ik
Injury to the ligamentous connection between the tibia and fibula above the ankle joint, creating ankle instability.
Full Definition
Syndesmotic injury, also known as a high ankle sprain, involves damage to the syndesmotic ligaments that connect the distal tibia and fibula, specifically the anterior inferior tibiofibular ligament, posterior inferior tibiofibular ligament, and interosseous membrane. This injury mechanism typically occurs during external rotation of the foot with the ankle dorsiflexed, commonly seen in football, soccer, and basketball. Unlike typical lateral ankle sprains, syndesmotic injuries affect the stability of the mortise joint and can significantly impact ankle function. Athletes experience pain above the ankle joint, often with difficulty bearing weight, and may have prolonged recovery times. The squeeze test and external rotation test are diagnostic maneuvers used to identify this injury, and advanced imaging may be required for accurate diagnosis.
Usage
Usage note: More severe than typical ankle sprains; requires different treatment approach and longer recovery time.
In Context
- "MRI confirmed a syndesmotic injury with disruption of the anterior inferior tibiofibular ligament." — Imaging interpretation
- "The football player's prolonged recovery was attributed to an undiagnosed syndesmotic injury." — Clinical follow-up documentation