Metacarpal<unk> s are usually caused by the impact of a clenched fist with a hard, immovable object, such as a skull or a wall. When a punch impacts with improper form, the force occurs at an angle towards the palm, creating a dorsal bend in the bone, ultimately causing the<unk>  when the bone is bent too far. When a<unk>  punches with proper form, the knuckles of the second and third metacarpal align linearly with the articulating radius, followed linearly by the humerus. Due to the linear articulation of bones, the force is able to travel freely across these joints and bones and be dissipated without injury. Therefore,<unk> s of the second or third metacarpals are rare, with<unk> s of the 4th and 5th metacarpals comprising the vast majority of metacarpal<unk> s.
Boxer's fracture
Chauffeur's fracture
Smith's fracture
Pott's fracture
Malgaigne's fracture
Bennett's fracture
Colles' fracture
Barton's fracture