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Clinical Results of the Metha Short Hip Stem: A Perspective for Younger Patients?

机译：Metha髋关节短小茎的临床结果：年轻患者的观点？

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In recent years, various uncemented proximal metaphyseal hip stems were introduced for younger patients as a bone preserving strategy. Initial osteodensitometric analyses of the surrounding bone of short stems indicate an increase of bone mass with secondary bone ingrowth fixation as a predictor of long-term survival of these types of implants. We report the outcome of 151 modular Metha short hip stem implants in 148 patients between March 2005 and October 2007. The mean follow-up was 5.8±0.7 years and the mean age of the patients was 55.7±9.8 years. Along with demographic data and co-morbidities, the Harris Hip Score (HHS), the Hip dysfunction and Osteoarthritis Outcome Score (HOOS), and also the results of a patient-administered questionnaire were recorded pre-operatively and at follow-up. The mean HHS increased from 46±17 pre-operatively to 90±5 the HOOS improved from 55±16 pre-operatively to 89±10 at the final follow-up. A total of three patients have been revised, two for subsidence with femoral revision and one for infection without femoral revision (Kaplan Meier survival estimate 98%). The radiological findings showed no radiolucent lines in any of the patients. The modular Metha short hip stem was implanted in younger patients, who reported an overall high level of satisfaction. The clinical and radiographic results give support to the principle of using short stems with metaphyseal anchorage. However, long-term results are necessary to confirm the success of this concept in the years to come.Key words: short stem, total hip arthroplasty, Metha, bone preserving
机译：近年来，为年轻患者引入了各种非骨水泥化的近端干meta端髋关节干，作为骨保护策略。最初对短茎周围骨的骨密度测量分析表明，随着二次骨向内生长固定，骨量增加是这些类型植入物长期存活的预测指标。我们报告了2005年3月至2007年10月之间148例患者中151例Metha短髋茎干植入物的结果。平均随访时间为5.8±0.7岁，患者平均年龄为55.7±9.8岁。连同人口统计学数据和合并症，在术前和随访时记录哈里斯髋关节评分（HHS），髋关节功能障碍和骨关节炎结果评分（HOOS）以及患者管理问卷的结果。平均HHS从术前的46±17增加到90±5，HOOS从术前的55±16改善到最终随访时的89±10。总共对3例患者进行了修订，其中2例因股骨下陷而下沉，1例因无股骨下陷而感染（Kaplan Meier生存率估计为98％）。放射学结果显示任何患者均无放射线。模块化的Metha短髋茎植入了年轻患者，他们总体上表示满意。临床和放射学结果为使用短茎干meta端锚固的原则提供了支持。然而，长期的结果对于确认这一概念在未来几年的成功是必要的。关键词：短茎，全髋关节置换术，Metha，骨保存

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