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Ten-year survival rate of 89% after distal femoral osteotomy surgery for lateral compartment osteoarthritis of the knee
Knee Surgery, Sports Traumatology, Arthroscopy ( IF 3.8 ) Pub Date : 2020-04-13 , DOI: 10.1007/s00167-020-05988-5
Faiz S. Shivji , Aaron Foster , Michael J. Risebury , Adrian J. Wilson , Sam K. Yasen

Purpose

The purpose of this study was to assess the accuracy, safety, and survival of distal femoral osteotomy (DFO) surgery for lateral compartment OA of the knee.

Methods

A retrospective cohort study was conducted at a single UK centre, using prospectively collected data over an 8-year period (2009–2017). All patients had pre-operative radiographic analysis and digital planning of their deformity correction in addition to post-operative analysis of the achieved correction and yearly face-to-face follow-up. Complications (defined as an undesirable medical or surgical event as a direct result of the operation), reoperations, and failure (defined as conversion to arthroplasty or revision) were recorded.

Results

From a total of 83 patients, 81 patients undergoing 86 primary DFOs were included in this study, with a mean follow-up of 99 months (SD 27 months). The mean pre-operative percentage Mikulicz point was 78.7% (SD 19.1%) and post-operative 35.9% (SD 14.8%). The mean accuracy of correction (intended correction − achieved correction) was an 8.2% overcorrection (SD 13.7%). The complication rate was 4.7%. Using Kaplan–Meier analysis, the mean survival was 113 months (95% CI 106–120) with the probability of surviving 10 years 89%.

Conclusion

DFO for valgus alignment and lateral compartment arthritis is associated with low complications, long-term joint preservation, and the prevention of arthroplasty surgery. However, the accuracy of correction still requires improvement in intra-operative technique.

Level of evidence

IV.



中文翻译:

远端股骨截骨术治疗膝关节外侧骨关节炎的十年生存率达到89%

目的

这项研究的目的是评估远端股骨截骨术(DFO)膝关节外侧室OA的准确性,安全性和生存率。

方法

回顾性队列研究在英国的一个中心进行,使用了过去8年(2009-2017年)收集的前瞻性数据。除了对获得的矫正进行术后分析以及每年进行面对面的随访外,所有患者均进行了术前放射线照相分析和畸形矫正的数字化计划。记录并发症(定义为手术直接导致的不良医学或外科事件),再次手术和失败(定义为置换或置换)。

结果

在总共83例患者中,有81例患者接受了86例原发性DFO,平均随访时间为99个月(SD为27个月)。术前Mikulicz点的平均百分比为78.​​7%(标准差19.1%),术后35.9%(标准差14.8%)。校正的平均准确度(预期校正-已实现的校正)为8.2%过校正(SD 13.7%)。并发症发生率为4.7%。使用Kaplan–Meier分析,平均生存期为113个月(95%CI 106-120),生存10年的可能性为89%。

结论

DFO用于外翻对准和外侧室关节炎与并发症少,关节长期保存和关节置换手术的预防有关。然而,校正的准确性仍需要术中技术的改进。

证据水平

IV。

更新日期:2020-04-22
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