Intraosseous ganglion of the talus with extension in the subtalar joint

Abstract

Intraosseous ganglion is a benign bony cyst that mainly involves the epiphysis and metaphysis of long bones. Intraosseous ganglions are rare in talus, and in all the cases reported in literature, the patients had symptoms pertaining to the ankle joint. No case has been reported where the lesion in the talus has caused symptoms specific to the subtalar joint. A 20-year-old female presented to our hospital with pain in the right foot from last 6 months. Ankle joint movements were within normal limits, but the subtalar movement were significantly reduced. Plain radiographs of the foot and ankle were normal. Computed tomography (CT) scan of the foot and ankle showed a cystic lesion (0.5 × 0.5 cm) involving the base of the talar body which communicated with the subtalar joint. The patient was treated by curettage of the lesion through a curvilinear incision over the medial aspect of the subtalar joint. The clinical results after 3 months were excellent. The patient returned to her regular and light recreational activities with full, painless range of motion. There was no recurrence of symptoms at 6 months. Intraosseous ganglion is of talus is a rare entity. Symptomatic patient should be treated surgically.