THIS report is based on the study of 81 cases of degenerative osteoarthritis of the hip joint, of both the primary and the secondary type. Among these 81 cases, there were 16 in which the arthritis followed aseptic necrosis of the femoral head, due to a variety of causes. The purpose of this investigation is to discuss the pathology and pathogenesis of degenerative osteoarthritis against the background of these cases, and particularly to evaluate the procedures advocated for treatment of osteoarthritis of the hip joint.
CLASSIFICATION AND PATHOGENESIS
Of the 81 cases of degenerative arthritis of the hip studied in this hospital, there was a group of 33 in which the cause was obscure. In another group, comprising 28 cases, the arthritis was secondary to congenital dislocation of the hip (3 cases), congenital subluxation of the hip (4 cases), direct trauma without fracture (5 cases), preexistent rheumatoid arthritis