The treatment for Kienbock's Disease depends on the stage. Early treatment of Kienbock's Disease is usually focused on immobilization with a cast. If Kienbock's Disease is more advanced, or if conservative approaches have failed, operative treatment will be needed. Early operative treatments decrease the pressure on the lunate bone by shortening the forearm bone. Fusion of the wrist bones, or removal of some of these bones, may be necessary in the advanced stages of Kienbock's Disease.