Abstract
Ankle sprains are one of the most common injuries that occur among people of all ages and accounts for 75% of ankle injuries and for 10 to 30 percent of sports-related injuries in young athletes. Inversion sprain is more common than eversion ankle sprain, to result in injury to the lateral ligament complex. Though injury to the posterior tibial tendon is not a very common injury associated with eversion ankle sprain, it often can be overlooked and missed in the initial physical examination. We present a case of a college student who sustained a twisting injury to his left ankle while playing football. After initial history, physical examination and plain radiographic evaluation, a diagnosis of eversion ankle sprain was made by a general practitioner and treated conservatively. Due to persistent symptoms and local signs, subsequent evaluation with an MRI study revealed tibialis posterior (TP) tendon strain with diffuse soft tissue swelling extending up to lower third of the leg and associated Grade I osteochondral injury to the posterolateral aspect of talus. The injury was successfully treated with medial arch support ankle brace, analgesics, guarded weight bearing and physiotherapy with full functional recovery in 12 weeks.
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