Purpose

The aim of this study was, to investigate the rate of return to sports (RTS) and physical activity after implantation of PFIA and to identify factors predictive of improved postoperative sporting ability.

Methods

Sixty-two patients with a mean age of 46 ± 11 years, who underwent implantation of PFIA at the senior authors’ institution, were enrolled. They were prospectively evaluated preoperatively and at a minimum of 2 years postoperatively with a mean follow-up of 60 ± 25 months. Clinical outcomes, return to sports and activity, type of sport or activity, subjective satisfaction, and frequency were evaluated by questionnaire.

Results

The transformed overall Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) score improved from 67 ± 16 to 77 ± 19 (p = 0.003), Tegner activity scale results improved from 3 ± 2 points to 4 ± 1 points (p < 0.001), and scores on the visual analog scale (VAS) pain scale decreased from 6 ± 2 points to 3 ± 2 points (p < 0.001). The sports frequency increased from 1 ± 2 sessions to 2 ± 1 sessions per week (p = 0.001). Ninety-four percent of the patients who did not fail could return to the same or higher level of sports, with 74% of the patients reporting an improved ability to perform sports. No preoperative factors could be detected to significantly influence RTS after surgery.

Conclusions

PFIA is a valid treatment option for the active patient with end-stage isolated patellofemoral OA. Reliable improvements in knee function, pain, and participation in low-impact sports were found.

Level of evidence

IV.

中文翻译：

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在中期随访中植入髌股嵌体关节成形术后，参与低冲击运动的可靠改善。

目的

本研究的目的是调查 PFIA 植入后恢复运动 (RTS) 和身体活动的速率，并确定预测术后运动能力改善的因素。

方法

入选了 62 名平均年龄为 46 ± 11 岁的患者，他们在资深作者机构接受了 PFIA 植入。他们在术前和术后至少 2 年进行了前瞻性评估，平均随访时间为 60 ± 25 个月。通过问卷调查评估临床结果、运动和活动的回归、运动或活动的类型、主观满意度和频率。

结果

转换后的西安大略和麦克马斯特大学骨关节炎指数 (WOMAC) 总分从 67 ± 16 提高到 77 ± 19 ( p =  0.003)，Tegner 活动量表结果从 3 ± 2 分提高到 4 ± 1 分 ( p  < 0.001)，视觉模拟量表 (VAS) 疼痛量表的分数从 6 ± 2 分下降到 3 ± 2 分 ( p  < 0.001)。运动频率从每周 1 ± 2 次增加到 2 ± 1 次（p  = 0.001）。94% 未失败的患者可以恢复到相同或更高水平的运动，其中 74% 的患者报告运动能力有所提高。术前未发现显着影响术后 RTS 的因素。

结论

PFIA 是活动性终末期孤立性髌股骨 OA 患者的有效治疗选择。发现膝关节功能、疼痛和参与低强度运动的可靠改善。

证据级别

四。