The Sanders classification is a system of categorizing intra-articular calcaneal fractures based on the number of articular fragments seen on the coronal CT image at the widest point of the posterior facet.
|I||Nondisplaced posterior facet|
|II||Displaced with one fracture line in the posterior facet|
|III||Displaced with two fracture lines in the posterior facet|
|IV||Comminuted with more than three fracture lines in the posterior facet|
- Foot fracture
Original source: https://en.wikipedia.org/wiki/Sanders classification. Read more