8/13/2023 0 Comments Scaphoid bone fracture![]() The above-described mechanism causes the scaphoid bone to impact against the distal radius concavity, causing a fracture most likely to occur in the middle of the scaphoid. This trauma mechanism also puts the dorsal radius and the scaphoid-lunatum (SL) ligament at risk. The typical trauma mechanism is a fall on the outstretched hand with the wrist in radial deviation inducing impact of the palm. In case of a proximal scaphoid fracture, the blood supply through the scaphoid bone is interrupted, making the healing process of the proximal pole particularly more difficult. The proximal pole depends on blood supply from the distal pole through the scaphoid bone. Contrary to the proximal pole, the distal pole and the tubercle have an independent vascularisation. The palmar branch reaches the scaphoid via the distal tubercle. The dorsal branch of the radial artery provides 75% of the blood supply through the foramina. The main blood supply is through retrograde branches of the radial artery. Because of its unique anatomy it can articulate with all five surrounding bones (distal radius, os capitatum, os lunatum, os trapezium and os trapezoideum).Įighty percent of the scaphoid bone consists of cartilage, leaving limited space for entrance of the supplying arteries. The word scaphoid is derived from the Greek word for boat (skaphos). The scaphoid fracture was first described in 1905 by Destot, a French surgeon, anatomist and radiologist. ![]()
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