I posted a radiograph earlier asking about Bennett’s and Rolando fractures. This is the patient’s CT obtained later to further characterize the fracture:
This is a Bennett’s fracture pattern. Bennett’s is a fracture of the base of the 1st Metacarpal that involves the articulation and usually has some dislocation of the CMC (carpal-metacarpal) joint. This fracture does have slight dislocation at the 1st CMC joint.
The Rolando’s fracture pattern is more comminuted, usually T or Y shaped comminution. It carries a worse prognosis although the Bennett’s also has high incidence of arthritis even with optimal management.
Author: Russell Jones, MD