Lee Chan Young, Jin Sheng-Yu, Choi Ji Hoon, Yoon Taek-Rim, Park Kyung-Soon
Department of Orthopedic Surgery, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Korea.
Hip Pelvis. 2024 Jun 1;36(2):120-128. doi: 10.5371/hp.2024.36.2.120.
PURPOSE: The purpose of this study was to compare the clinical and radiographic outcomes with use of short-curved stems versus standard-length single wedged stems over a minimum follow-up period of five years. MATERIALS AND METHODS: A retrospective study of primary total hip arthroplasties performed using the Fitmore stem (127 hips, 122 patients) and the M/L taper stem (195 hips, 187 patients) between October 2012 and June 2014 was conducted. The clinical and radiographic outcomes were obtained for evaluation over a minimum follow-up period of five years. RESULTS: In both the Fitmore and M/L taper groups, the mean Harris hip score improved from 52.4 and 48.9 preoperatively to 93.3 and 94.5 at the final follow-up, respectively (=0.980). The mean Western Ontario and McMaster Universities Osteoarthritis Index scores also improved from 73.3 and 76.8 preoperatively to 22.9 and 25.6 at the final follow-up, respectively (=0.465). Fifteen hips (Fitmore: 14 hips; M/L taper: one hip, <0.001) developed intraoperative cracks and were treated simultaneously with cerclage wiring. Radiography showed a radiolucent line in 24 hips in the Fitmore group and 12 hips in the M/L taper group (=0.125). Cortical hypertrophy was detected in 29 hips (Fitmore group: 28 hips; M/L taper group: one hip, <0.001). CONCLUSION: Similarly favorable clinical and radiographic outcomes were achieved with use of both short-curved stems and standard-length single wedged stems. However, higher cortical hypertrophy and a higher rate of femoral crack were observed with use of Fitmore stems.
目的:本研究的目的是比较使用短弯柄与标准长度单楔柄在至少五年的随访期内的临床和影像学结果。 材料与方法:对2012年10月至2014年6月期间使用Fitmore柄(127髋,122例患者)和M/L锥度柄(195髋,187例患者)进行的初次全髋关节置换术进行回顾性研究。获取临床和影像学结果以在至少五年的随访期内进行评估。 结果:在Fitmore组和M/L锥度组中,平均Harris髋关节评分分别从术前的52.4和48.9提高到最终随访时的93.3和94.5(=0.980)。平均西安大略和麦克马斯特大学骨关节炎指数评分也分别从术前的73.3和76.8提高到最终随访时的22.9和25.6(=0.465)。15髋(Fitmore组:14髋;M/L锥度组:1髋,<0.001)术中出现裂纹并同时进行环扎钢丝治疗。影像学检查显示Fitmore组24髋和M/L锥度组12髋出现透亮线(=0.125)。在29髋中检测到皮质肥大(Fitmore组:28髋;M/L锥度组:1髋,<0.001)。 结论:使用短弯柄和标准长度单楔柄均取得了相似的良好临床和影像学结果。然而,使用Fitmore柄时观察到更高的皮质肥大和更高的股骨裂纹发生率。
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