A Bennetts fracture is a fracture-dislocation at the base of the first metacarpal bone where it meets the trapezium, usually caused by a sudden axial load through a flexed thumb, such as during a fall or high-impact grip. The break results in a characteristic small fragment that remains attached to the carpometacarpal joint by strong ligaments, while the rest of the metacarpal is pulled proximally and dorsally by the abductor pollicis longus. This displacement makes the fracture unstable and often requires reduction and fixation to restore normal thumb function. Because the thumbs carpometacarpal joint is critical for grip and pinch strength, a Bennetts fracture can significantly affect hand movement if not properly treated. Bennetts Fracture of the 1st Metacarpal Diagram - Chart - diagrams and charts with labels. This diagram depicts Bennetts Fracture of the 1st Metacarpal and explains the details of Bennetts Fracture of the 1st Metacarpal.
Bennetts Fracture of the 1st Metacarpal
