Retrofibular osteochondroma with peroneal tendon subluxation

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Bone Tumors

Background:

• Osteochondromas are benign bone tumors that can lead to complications affecting surrounding structures.
• Distal fibular osteochondromas are uncommon, as is non-traumatic peroneal tendon subluxation.

Observation:

• A 36-year-old male presented with ankle pain and instability without a history of trauma.
• Imaging revealed a distal retrofibular osteochondroma impinging on the peroneal tendons.

Findings:

• The patient underwent successful surgical excision of the osteochondroma.
• Peroneal groove deepening and lateral ankle ligament reconstruction (Brostrom-Gould) were performed concurrently.
• Post-operative follow-up at 6 months showed complete resolution of ankle instability and peroneal tendon subluxation.

Implications:

• This case highlights a rare cause of peroneal tendon subluxation.
• Surgical management involving osteochondroma excision and ankle stabilization can effectively treat this condition.
• Highlights the importance of considering osteochondroma in the differential diagnosis of non-traumatic ankle instability.