<prompt> A most common complication of scaphoid fractureMalunionAvascular necrosisWrist stiffnersArthritis  <response>: Avascular necrosis is associated with long-term steroid use and drinking too much alcohol. Its most common in people between the ages of 30 and 60 and often affects the hip.Early stages may be symptom-free. Eventually, the affected joint may hurt when weight is put on it or when lying down.Treatment includes physiotherapy, surgery and medication. 