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Total Hip Arthroplasty in Fused Hips Using Hard Bearing Articulation*Yoon Taek Rim - Chonnam National University - Hwasun-Gun, KoreaPark Young Hoon - Chonnam National University - Hwasun-Gun, KoreaCho Nam Young - Chonnam National University - Hwasun-Gun, Korea*Email: tryoon@chonnam.ac.krPurpose: This study was undertaken to assess the result of total hip arthroplasty (THA)performed for fused hips.Patients and Methods: Twenty nine patients (31 hips), aged 21 to 70 years (average 46 years),underwent THA conversion surgery and were followed for an average of 4.6 years (2.4-12.0years). There were 23 cases of spontaneous fusion and 8 case of surgical fusion. The causes ofjoint fusion were tuberculosis in 6 hips, childhood coxitis in 13, ankylosing spondylitis in 6 andchildhood trauma in 4. Modified two incision technique was used in 9 hips and in 22 hips, thesurgery was performed through a posterolateral approach combined with anterior capsulotomythrough gluteus medius and tensor fasica lata interval. In 1 case, greater trochanter osteotomywas done. All acetabular components were inserted at the true acetabulum and the articulationswere metal on metal in 7 cases and ceramic on ceramic in 24 cases. Postoperatively, range ofmotion exercises were encouraged after 2 to 3 weeks of bed rest and subsequent weight bearingcrutch ambulation. Then active exercises were strongly encouraged to stretch abductors. Weevaluated the clinical and radiological results.Results: Mean duration of surgery was 178.6 minutes, and mean perioperative blood loss was1420.1 ml. Post-operative dislocation occurred in 1 case and partial femoral nerve palsydeveloped in 1 case. Mean Harris Hip Score improved from 42.4 to 84.2 and mean leglengthening of 36.6 mm was achieved. Sitting cross legged was possible in 15 patients andexcept 2 patients, all patients were satisfied with the surgery. On the radiologic evaluation, therewas no changes in cup position and there was one case with acetabular focal osteolysis.Postoperative dislocation occurred in one case and there was no revision surgery or infection.Conclusion: Our study suggest that THA performed for fused hips with hardbearing articulation can provide good clinical and radiological results in midtermfollow up.Saturday, October 9, 2010, 14:00-14:40Session A21: Knee ArthroplastyThe Effect of Tourniquet in Total Knee Arthroplasty- a RandomizedControlled Trial*Ta-Wei Tai - National Cheng Kung University Medical Center - Tainan, TaiwanChyun-Yu Yang - National Cheng Kung University Hospital - Tainan, TaiwanChii-Jeng Lin - National Cheng Kung University Medical Center - Tainan, TaiwanKuo-an Lai - National Cheng Kung University Medical Center - Tainan, Taiwan*Email: david0803@gmail.com[Introduction] Total knee arthroplasty (TKA) is associated with significant blood loss, for whichfile:///E|/ISTA2010-Abstracts.htm[12/7/2011 3:15:47 PM]