UCSD Musculoskeletal Radiology bonepit.com MSK Classifications

Type 1 fracture is an articular process chip fracture of the talus with no extension into the talofibular joint. Conservative Rx.

Type 2 fracture is a single large fragment extending from the talofibular joint to the subtalar joint. Surgical fixation.

Type 2a is into the talofibular joint.

Type 2b is into the talocalcaneal joint.

Type 3 fracture is a comminuted fracture of the entire lateral process.  Debridement, fixation if dominant fragment.