How does a Bennett's fracture differ from a boxer’s fracture according to the chapter?

A Bennett's fracture is an intra-articular fracture-dislocation at the base of the first metacarpal, typically caused by axial loading. In contrast, a boxer's fracture occurs at the neck of the fifth metacarpal due to a punch-type injury, resulting in volar displacement of the metacarpal head.

The key difference between a Bennett's fracture and a boxer's fracture lies in their locations and mechanisms of injury. A Bennett's fracture involves the base of the first metacarpal and is characterized by an intra-articular fracture-dislocation, often resulting from axial loading. On the other hand, a boxer's fracture typically affects the neck of the fifth metacarpal and occurs during a punch, leading to volar displacement of the metacarpal head.