Bennett's fracture is fracture dislocation of base of metacarpal :: (A) 4th, (B) 3rd, (C) 2nd, (D) 1st
Answer is D. Benett's fracture is an intra - articular fracture dislocation of the palmar base of first metacarpal bone of the thumb with either subluxation or dislocation of first carpometacarpal joint, i.e. trapezometacarpal joint.