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KMID : 0386720010130040367
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Journal of the Korean Hip Society
2001 Volume.13 No. 4 p.367 ~ p.374
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Total Hip Arthroplasty Using Cone Prosthesis in Severely Underdeveloped and Deformed Femur
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Lee Joong-Myung
Kim Jeong-Min
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Abstract
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Purpose: To evaluate the clinical and radiographic results of total hip arthroplasty using cone proshesis in severely underdeveloped and deformed femurs occurring from various causes.
Material and Methods: A total of 23 hips of 23 patients were followed for more than 2 years after surgery. They underwent surgery between Mary. 1992 and Mar. 1999. The precedent disease was sequelae of tuberculosis hip in 13 cases, sequelae of pyogenichip in 8 cases and sequelae of developmental dislocation of the hip in 2 cases. All demonstrated severe flexion contracture and shortening. We used an uncemented acetabular cup and conical stem. We attempted to maintain antatomic hip center and we performed extensive soft tissue release.
Results: The average Harris hip score improved from 53.4 preoperatively to 88.4 postoperatively. The average lower limb discrepancy improved from 5.3 ㎝ preoperatively to 0.4 ㎝ postoperatively. The average flexion contracture improved from 38° preoperatively to 0° postoperatively. There was no radiolucene line between the bone and stem. Verticall subsidence, osteolysis and cortical hypertrophy were not noted. Hterotophic ossification was noted in 3 cases. Spot welds was notedin 20 cases(87%).
Conclusion: With these results, we believe that cone prosthesis seems may be a good option in total hip arthroplasty of severely underdeveloped & deformed femur.
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KEYWORD
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Total hip arthroplasty, Cone prosthesis, Underdeveloped and deformed femur
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