BACKGROUND: Total hip arthroplasty ( @entity2445 ) for the treatment of severe @entity572 is a technically demanding procedure. In most previous reports, techniques and clinical outcomes using cementless prostheses are widely reported, but there have been few reports on the technique and outcomes using cemented prostheses. The purpose of this study was to evaluate the outcomes of a cemented @entity2445 with a simultaneous subtrochanteric femoral shortening transverse osteotomy in @entity1 with Crowe type III or @entity572 . METHODS: We retrospectively reviewed 15 @entity572 in 11 @entity1 who underwent cemented @entity2445 with subtrochanteric femoral shortening transverse osteotomy and with placement of the acetabular component at the level of the anatomic hip center. @entity1 were evaluated preoperatively and postoperatively with the Merle d'Aubign   and Postel hip score. Radiographic examination was performed to evaluate the level of the femoral osteotomy site, of the radiographic leg lengthening, and of bone union. RESULTS: The clinical evaluation by the Merle d'Aubign   and Postel hip score was improved from 8.1      2.5 preoperatively to 15.1      1.3 at the time of final follow-up. Radiographic evidence of bone union at the osteotomy site appeared at more than 6  months after operation. Moreover, there were 3 (20%) nonunions that needed reoperation. No acetabular and femoral components exhibited radiological loosening at the time of final follow-up. In addition, one delayed union causing thigh @entity158 was treated with low-intensity pulsed ultrasound that accelerated bone formation. CONCLUSION: Our results in this study indicate that we should prevent instability at the transverse osteotomy site and an adequate intercalary cortical bone graft is needed to prevent nonunion in cemented @entity2445 combined with a subtrochanteric femoral shortening transverse osteotomy. We should apply this procedure with caution in @entity1 , especially those who show less potential bone formation activity.

@entity572 with subtrochanteric femoral shortening transverse osteotomy for severely dislocated XXXX : outcome with a 3- to 10-year follow-up period.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity2445 :: ('MESH:D013619', 'Chemical') :: ['THA'] @entity572 :: ('MESH:D006617', 'Disease') :: ['IV developmental dysplasia of the hip', 'hips', 'dislocation of the hip'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain']
@entity572 :: (MESH:D006617,Disease) :: ['hips']
