A boxer's fracture is the break of the 5th metacarpal bones of the hand near the knuckle .  Occasionally it is used to refer to fractures of the 4th metacarpal as well.  Symptoms include pain and a depressed knuckle. 
The boxer's fracture is a broken bone of the hand , classically at the base of the small finger. The boxer's fracture is a break that occurs in the region of the bone called the metacarpal neck . The metacarpal is the bone in the palm of the hand that extends from the small bones of the wrist to the knuckle at the base of the finger. The site of the break in a boxer's fracture is near the knuckle.