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KMID : 0361620100450050342
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Journal of the Korean Orthopaedic Association
2010 Volume.45 No. 5 p.342 ~ p.346
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Ceramic on Ceramic Cementless Total Hip Arthroplasty Using a Large Diameter Head
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Choy Won-Sik
Ahn Jae-Hoon
Kam Byoung-Sup
Yang Dae-Suk
Cha Yong-Han
Lee Neung-Ki
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Abstract
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Purpose: The authors evaluated the clinical and radiological results of ceramic on ceramic articulation cementless total hip arthroplasty using a large diameter head.
Materials and Methods: Seventy-two hips were followed for more than 2 years after ceramic on ceramic articulation cementless total hip arthroplasty using a 36 mm diameter head. The mean patient age was 62 years (range: 50~85), and the mean follow-up period was 35.3 months (range: 25-53). The Harris hip score, the postoperative inguinal pain and the thigh pain were analyzed clinically. The radiological results were assessed using various radiological indices.
Results: The mean Harris hip score improved from preoperative 57.5 points to postoperative 94.8 points. The postoperative mean flexion of hip was 109° (range: 100°-125°), external rotation was 42° (range: 35°-49°) and abduction was 35° (range: 30°-45°). There was one case of inguinal pain. Radiologically, all the stems demonstrated stable fixation without progressive subsidence of the stem or significant change in the cup obliquity. A radiolucent line was observed around the stem in 4 cases (5.6%) and around the cup in 2 cases (2.8%). Endosteal new bone formation was observed around the stem in 28 cases (38.9%) and around the cup in 26 cases (36.1%). There was no osteolysis around the stem or the cup.
Conclusion: The short-term results of ceramic on ceramic cementless total hip arthroplasty using a large diameter head demonstrated satisfactory results.
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KEYWORD
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cementless total hip arthroplasty, ceramic on ceramic articulation, large diameter head
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