Denis classification From Wikipedia, the free encyclopedia System of categorizing sacral fractures The Denis classification is a system of categorizing sacral fractures.[1] Zone Description I Fracture lateral to the sacral foramen II Fracture through the sacral foramen III Fracture medial to the sacral foramen extending into the spinal canal References ↑ Denis F, Davis S, Comfort T (Feb 1988). "Sacral fractures: an important problem. Retrospective analysis of 236 cases". Clin Orthop Relat Res. 227: 67–81. doi:10.1097/00003086-198802000-00010. PMID 3338224. This article about orthopedic surgery is a stub. You can help Wikipedia by expanding it.vte Related Articles