A humerus fracture is an injury to the bone of the upper arm. The upper arm bone, the humerus, connects the shoulder to the elbow. Humerus fractures are generally divided into three types of injuries:
Surgery may be required when the bone fragments are far out of position. Determining when the alignment is acceptable depends on a number of factors. Fractures close to the shoulder and elbow joints, especially fractures that extend into the joint, are more likely to require surgery. Conversely, fractures in the center of the shaft of the bone rarely require surgery, even with the bone fragments appear not perfectly aligned.