Clinical Research Of The Management Of The Developmental Dislocation Hip With Total Hip Replacement

Objective: To study the surgical procedure and its postoperative effectiveness of total hip replacement(THR) for treatment of developmental dislocation of hip(DDH). Methods: 21 cases of 23 model hip adult development dislocation hip with secondary bone joint inflammtion were taken for total hip replacement and rebuilt dissection structure of the acetabulum and femur and rightly installed artificial style.Among the patients, 2 were male and 19 were female.With their ages ranging from 35 to 73 years and anaverage age of 51 years.The bilateral arthroplasty was performed in 2 patients and the unilateral arthroplasty in 19 patients.The patients mainly suffered from pain and claudication.According to Crowe classification,9 were typeⅠ,6 typeⅡ,5 typeⅢand 3 typeⅣ. Result: The followed—up time was from 0.5 to 6 years.The preoperative Harris hip score ranged from 22.35 to 69.925 (average 47.411).After the operation,the pain was completely relieved and the Harris hip score ranged from 71.15 to 98.75(average 90.738).13 cases were excellent,8 cases were good and 2 cases were fair.The rate of excellent and good was 91.30%.Conclusion: Treatment of total hip replacement to adult developmental dislocation of the hip is a effective way,and it could be somewhat difficult,because of the liability to complications.The technical difficulties encountered during surgery included the correction of the length of bilateral lower extremity,the balance of the abductor muscles,the release of the soft tissue,the dea1ing of the superior seganental defect of acetabulum and selection of the components,and good performance can make the operation ease with less complication and better results.