Department of Medicine, Surgical Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil.
Department of Medicine, Surgical Sciences, UFRGS, Porto Alegre, RS, Brazil.
J Knee Surg. 2021 Jan;34(2):164-170. doi: 10.1055/s-0039-1693730. Epub 2019 Aug 7.
Lack of full extension of the knee is a disabling condition that sometimes needs to be treated by a posterior capsulotomy of the knee. However, it is not clear if the full extension acquired can be kept throughout long-time follow-up. We conducted a retrospective cohort study of 20 patients diagnosed with minimal flexion contracture of the knee who underwent open posterior capsulotomy between 1990 and 2010. All patients (100%) presented with a preoperative Lysholm's score classified as poor or fair (mean = 58.6 ± 13.8, 95% confidence interval [CI]: 52.3-64.9), but 14 patients (70%) experienced an improvement to good or excellent scores (mean = 87.6 ± 8.8, 95% CI: 83.6-91.6) after the follow-up. The mean preoperative angle of fixed flexion was 25.0 ± 9.1 degrees (95% CI: 20.8-29.2), and it decreased to 4.2 ± 4.1 degrees (95% CI: 2.3-6.1) after the follow-up. We conclude that posterior capsulotomy of the knee proved to be an effective procedure to treat properly patients with painful knees secondary to lack of full extension after 10.3 years of follow-up.
膝关节不能完全伸展是一种致残的情况，有时需要通过膝关节后囊切开术来治疗。然而，目前尚不清楚获得的完全伸展是否可以在长期随访中保持。我们对 1990 年至 2010 年间接受开放性后囊切开术的 20 例膝关节轻度屈曲挛缩患者进行了回顾性队列研究。所有患者（100%）术前 Lysholm 评分均为差或一般（平均=58.6±13.8，95%置信区间[CI]：52.3-64.9），但 14 例患者（70%）在随访后评分提高到良好或优秀（平均=87.6±8.8，95%CI：83.6-91.6）。术前固定屈曲角度平均为 25.0±9.1 度（95%CI：20.8-29.2），随访后降至 4.2±4.1 度（95%CI：2.3-6.1）。我们的结论是，膝关节后囊切开术在 10.3 年的随访后，对于因缺乏完全伸展而导致膝关节疼痛的患者来说，是一种有效的治疗方法。
