The "joint-elevation" calcaneus fracture: a rare variant of the intra-articular calcaneus fracture-dislocation.

UNLABELLED: Calcaneus fractures are the most commonly fractured tarsal bone with approximately 75% being intra-articular in nature. Böhler's angle has been found to be reliable and prognostic, and it has been used as a proxy for joint depression and articular involvement. It often guides the need for advanced imaging and/or operative intervention. We describe a rare variant of intra-articular calcaneus fracture-dislocation that results in elevation of a portion of the posterior facet above the posterior talus and a seemingly normal or increased Böhler's angle, which we call the "joint-elevation" calcaneus fracture. Orthopaedic surgeons should be aware of this previously undescribed variant in order to avoid inappropriate treatment or misdiagnosis. LEVEL OF EVIDENCE: Therapeutic Level IV: Case Series.