Bennett's fracture is fracture dislocation of base of which of the following metacarpal?
Bennett's fracture dislocation is paial aicular fracture of 1st metacarpal base with trapeziometacarpal dislocation/ subluxation. Also know Rolando's fracture dislocation: It is complete fracture of 1st metacarpal. It involves whole aicular surface with comminuted T or Y intraaicular fracture. Ref: Apley's 8/e, Page 631-32; Watson Jones: fracture & Joint injuries 6/e, Page 760-62; Rockwood & Green's Fracture in Adults 6/e, Page 836-42.
3rd
4th
1st
2nd