Treatment of a scaphoid non-union is dependent upon a variety of factors. An MRI scan can be helpful to check for avascular necrosis. Its presence also makes repair of the scaphoid much more difficult. This can eventually result in fragmentation and the collapse of the bone. Avascular necrosis occurs when part of the scaphoid bone dies because of the loss of blood flow. Scaphoid non-unions may also develop a problem called avascular necrosis. A CT scan is helpful to check for collapse of the scaphoid on itself, resulting in a bend in the bone, which is called a “humpback” deformity. In many cases, special x-ray tests are also used to decide the best treatment approach. Scaphoid fractures and non-unions are usually confirmed by x-rays of the wrist. They will typically have pain along the thumb side of the wrist and may also have diminished wrist mobility, particularly wrist extension. Patients with a scaphoid non-union usually present with a history of previous wrist injury, especially a fall onto an outstretched wrist. Ultimately, scaphoid non-unions can lead to loss of wrist motion and eventual wrist arthritis. Scaphoid fractures that do not heal are referred to as a scaphoid non-union. When the scaphoid bone is broken, it may not heal properly because it has a very fragile blood supply. The scaphoid bone is vulnerable to fracture because of its position within the wrist and its role in wrist function. The scaphoid bone spans or links these two rows together and therefore has a special role in wrist stability and coordinating wrist motion. The two rows of small wrist bones act together to allow the wide variety of wrist positions and motions that we take for granted. The scaphoid bone is one of the eight small bones that comprise the wrist joint. Billing, Insurance & Financial Assistance.
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