Dameron-Lawrence-Botte classification of proximal 5th metatarsal fractures
The Dameron-Lawrence-Botte classification, or Lawrence-Botte classification, is a commonly used nomenclature for proximal fifth metatarsal fractures, which are categorized into one of three anatomic zones of involvement:
- zone 1: tuberosity (styloid process) avulsion fracture
- involving proximal tuberosity, starting from the lateral cortex
- with or without articular involvement of the metatarsocuboid joint
- zone 2: Jones fracture
- involving distal tuberosity and metaphyseal-diaphyseal junction, extending to the 4-5 intermetatarsal articulation
- without involvement of tarsometatarsal joint
- zone 3: diaphyseal stress fracture
- proximal 1.5 cm of the diaphysis, distal to the 4-5 intermetatarsal articulation
History and etymology
The classification was described by the American orthopedic surgeons Steven J Lawrence and Michael J Botte in 1993 and then numbered by another American orthopedic surgeon, Thomas B Dameron, Jr, in a subsequent publication .
See also
