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KMID : 0386720110230010025
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Journal of the Korean Hip Society
2011 Volume.23 No. 1 p.25 ~ p.31
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Follow-up Study of the Cemented Polished Femoral Stem for More than Five Years
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Shon Won-Yong
Lee Joo-Won
Hur Chang-Yong
Yun Ho-Hyun
Huh Young-Jae
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Abstract
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Purpose: Surface finishing of a cemented femoral stem is a subject of controversy even though the contemporary cementing techniques have improved results. Using the Versys Heritage femoral stem, we evaluated the outcome of using a polished surface.
Materials and Methods : The subjects of this study were 95 hip arthroplasties in 82 patients and we used a cemented polished femoral stem with the 3rd generation cement technique and all the surgeries were done between October 2000 and August 2003. There were 58 male patients (64 hips) and 24 female patients (31 hips). The mean age at the time of the index arthroplasty was 52.3 years (26~74 years), and the average body mass index was 24.2±2.75 (19.1~29.8). The average follow up period was 80.7 months (64~109 months). All the hips were evaluated clinically by the Harris hip score and the thigh pain, and they were radiologically assessed by the cement grade and the presence of osteolysis around the femoral stem, as well as the presence of stress shielding of the proximal femur.
Results: At the final follow up, the Harris hip score for all the patients had improved from preoperative 58.9 (17-83) to post operative 91.7 (72~100). The cement grade was measured using Barrack’s method. Of the 95 hips, 45 (47.3%) cases were grade A, 48 (50.5%) cases were grade B and 2 (2.1%) cases were grade C1 at the final follow up. There was 1 case of definite loosening. Stress shielding was noted in 65 (68.4%) cases of the zero grade and 19 (20.0%) cases of the 1st grade.
Conclusion: In this study, the cemented polished femoral stem showed excellent results at the mid term with a minimum follow up of 5 years. But a longer-term follow-up study will be needed for further understanding the implications of cemented polished femoral stem.
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KEYWORD
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Cemented polished femoral stem, Total hip arthroplasty
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