Conroy Jonathan L, Chawda Mayur, Kaushal Rishi, Whitehouse Sarah L, Crawford Ross W, English Hugh
Orthopaedic Research Unit, The Prince Charles Hospital, Queensland, Australia.
J Arthroplasty. 2009 Jan;24(1):71-6. doi: 10.1016/j.arth.2008.01.130. Epub 2008 Apr 10.
A randomized controlled trial was performed to assess the effect of a rim cutter device on cement mantles in modern elective total hip arthroplasty using a flanged acetabular component. Forty patients were randomized to a rim cutter (21) or control (19) group. A statistically significant improvement in cement penetration was demonstrated in zone 1 (10.1 vs 8.6 mm, P = .023), and in cement mantle thickness in zones 2 and 3 (7.8 and 6.7 mm vs 5.7 and 5.4 mm [P < .001 and P = .017]), with a reduced incidence of bottoming out of the socket (1/21 vs 8/19 [P = .007]). Cement mantle thicknesses greater than 8 mm were achieved more consistently in the rim cutter group (30% vs 2%). This technique improves cement penetration and mantle thickness in a reliable manner.
进行了一项随机对照试验，以评估在使用带凸缘髋臼组件的现代择期全髋关节置换术中，边缘切割器装置对骨水泥固定层的影响。40名患者被随机分为边缘切割器组（21例）或对照组（19例）。结果显示，1区的骨水泥渗透有统计学意义的改善（分别为10.1和8.6毫米，P = 0.023），2区和3区的骨水泥固定层厚度也有改善（分别为7.8和6.7毫米，对比5.7和5.4毫米[P < 0.001和P = 0.017]），髋臼杯下沉的发生率降低（分别为1/21和8/19 [P = 0.007]）。边缘切割器组更一致地实现了大于8毫米的骨水泥固定层厚度（分别为30%和2%）。该技术以可靠的方式改善了骨水泥渗透和固定层厚度。
