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KMID : 0386720020140030177
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Journal of the Korean Hip Society
2002 Volume.14 No. 3 p.177 ~ p.186
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Radiological Change around Press-fit Hemispheric Acetabular Components
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Won Choong-Hee
Kim Yong-Min
Choi Eui-Sung
Park Kyoung-Jin
Heo Youn-Moo
Kim JP
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Abstract
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Purpose : To evaluate the clinical and radiological results of using the press-fit technique for cementless hemispheric acetabular cups.
Materials and Methods : We evaluated 100 consecutive primary total hip arthroplasties (84 patients) in which harris-Galante Ⅱ, Porous, titanium fiber coated cups were used. Seventy-four hips (63 patients) were followed up for more than four years, of which 61 hips (53 patients) were performed with press-fit fixation. The gap between the Harris-Galante cup and acetabulum was measured according to the zone described by DeLee and Charnley. We evaluated the cup inclination, migration, and Harris hip score at final follow-up.
Results : The average gaps between bone and press-fit cup at immediate postoperative radiographs were zoneⅠ-0.4 mm, zoneⅡ-0.7 mm, and zoneⅢ-0.1 mm; at three-month follow-up, zoneⅠ-0.4 mm, zoneⅡ-0.5 mm, and zoneⅢ-0.1 mm; at six-month follow-up, zoneⅠ-0.3 mm, zoneⅡ-0.4 mm, and zoneⅢ-0.0 mm; at one-year follow-up, zoneⅠ-0.3 mm, zoneⅡ-0.2 mm, and zoneⅢ-0.0 mm; and at final follow-up, zoneⅠ-0.2 mm, zoneⅡ-0.3 mm, and zoneⅢ-0.0 mm. There was no change of cup inclination angle or cup migration at the final follow-up radiograph. The mean Harris hip score was 95.6 at final follow-up.
Conclusion : Cementless, press-fit cup insertion leads to good radiological and clinical results at minimum four-year follow-up.
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KEYWORD
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Total hip arthroplasty, Press-fit, Screw fixation
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