AO/ASIF Technique in Late Reconstructive Surgery

Abstract

A malunited fracture is defined as a fracture which has healed with an abnormal position of the fragments. Depending on its location a malunion may impair function and appearance. The most serious problems are intra-articular malunions with steps in the subchondral bone plate. Untreated, these may lead to joint degeneration. Metaphyseal and diaphyseal malunions may result in shortening, angular or rotational deformities. The deformity itself is often painless, although neighbouring, or even distant, joints may be affected by the resulting unphysiological load distribution, leading to chronic pain and to progressive osteoarthritis.