A 55-year-old man sustains a fracture-dislocation of the base of the thumb metacarpal with a small triangular volar-ulnar fragment remaining in alignment and the rest of the metacarpal displaced dorsoradially. This describes a:

• A Bennett fracture ✓
• B Rolando fracture
• C Reverse Bennett fracture
• D Gamekeeper's thumb

Explanation

B Bennett fracture is an intra-articular fracture-dislocation of the base of the thumb metacarpal with a small volar-ulnar fragment attached to the anterior oblique (beak) ligament and dorsal-radial dislocation of the main metacarpal shaft. Rolando is a comminuted Y-shaped variant. Reverse Bennett is the ulnar collateral ligament equivalent.

Reference: Rockwood and Green's Fractures in Adults, 9th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.