Subchondral Insufficiency Fracture of the Talus: Symptoms, Causes, and Treatment

A subchondral insufficiency fracture of the talar head is a small crack in the bone just beneath the cartilage that covers the ankle joint surface. It typically results from repetitive stress on the ankle, such as running, jumping, or prolonged weight-bearing activities.

Symptoms

Common symptoms include:

• Deep, aching pain in the ankle, often worse with activity
• Swelling around the ankle joint
• Stiffness, especially in the morning or after rest
• Tenderness over the talar head

Causes and Risk Factors

Repetitive microtrauma overwhelms the bone's ability to repair itself. Risk factors include osteoporosis, sudden increase in activity level, biomechanical abnormalities, and previous ankle injuries.

Treatment

Initial management is conservative:

• Rest and activity modification (often with crutches or a walking boot)
• Ice and elevation to reduce swelling
• NSAIDs for pain and inflammation
• Physical therapy to restore strength and proprioception

If conservative measures fail after 3–6 months, surgical options such as core decompression, bone grafting, or internal fixation may be considered.