cause

Epidemiology

Second most common  hindfoot after calcaneal fractures

Aetiology

Aviators Astragalus

Fall from height

- hyper-dorsiflexion injury

- neck of talus strikes the anterior tibia

Anatomy

More than half surface covered by articular cartilage

- medial articular wall straight

- lateral articular wall curves posteriorly

Epidemiology

80% cancer patients have spinal metastasis at autopsy 

Spine is number one site for bony metastasis (50%)

Cause

Hexagon: PBBLTK

                 Prostate    Breast