Humerus fracture also cause deformity, and they typically limit the ability to flex the elbow. Humerus fractures usually occur after physical trauma, falls, excess physical stress, or pathological conditions. Falls that produce humerus fractures among the elderly are usually accompanied by a preexisting risk factor for bone fracture, such as osteoporosis, a low bone density, or vitamin B deficiency. Proximal humerus fractures most often occur among elderly people with osteoporosis who fall on an outstretched arm. Less frequently, proximal fractures occur from motor vehicle accidents, gunshots, and violent muscle contractions from an electric shock or seizure. Other risk factors for proximal fractures
Supracondylar process of the humerus incidental finding on radiographs made for other reasons, but occasionally isolated fractures of the process itself may lead to its discovery. Rarely, presence of the process and a connecting ligament may lead to compression of the brachial artery and the median nerve, leading to pain, paresthesia and/or ischemia. The supracondylar process is a vestigial remnant of the supracondylar foramen or epitrochlear foramen found in other vertebrates including cats, climbing mammals and lower primates. Supracondylar process of the humerus The supracondylar process of the humerus (also known as an "avian spur") is a bony projection on the anteromedial aspect of the