Reply to comment on Bao et al.: Lesser trochanteric osteotomy in total hip arthroplasty for treating CROWE type IV developmental dysplasia of hip

Total Hip Arthroplasty with Subtrochanteric Femoral Shortening Osteotomy for High Hip Dislocation

“…Femoral shortening can be achieved through proximal, subtrochanteric or distal osteotomies. Restoration of the anatomical hip center creates the risk of nerve traction injury because the femur migrates distally during femoroacetabular reduction, increasing limb length by more than 4 cm.…”

Letter to the Editor on “Long-Term Results of Total Hip Arthroplasty With Shortening Subtrochanteric Osteotomy in Crowe IV Developmental Dysplasia”

“…Several reasons may relate to this, such as the anteversion angle of the acetabular cup, the size of the femoral head and the acetabular cup, or loosing of the soft tissue. Some authors recommended that the anteversion angle should be set less than normal to avoid postoperative dislocation [5], and the relative small size of the femoral head and acetabular cup, which is caused by a lack of acetabular bone stock, could also attribute to dislocation. Can authors interpret the reasons of higher dislocation rate of THA for Crowe IV DDH patients?…”

Response to Letter to the Editor on “Long-Term Results of Total Hip Arthroplasty With Shortening Subtrochanteric Osteotomy in Crowe IV Developmental Dysplasia”

“…Several reasons may relate to this, such as the anteversion angle of the acetabular cup, the size of the femoral head and the acetabular cup, or loosing of the soft tissue. Some authors recommended that the anteversion angle should be set less than normal to avoid postoperative dislocation [5], and the relative small size of the femoral head and acetabular cup, which is caused by a lack of acetabular bone stock, could also attribute to dislocation. Can authors interpret the reasons of higher dislocation rate of THA for Crowe IV DDH patients?We would like to further discuss on these important issues, because it is helpful for surgeons to make strategy for their practice.…”