Background:

The Patient Acceptable Symptom State (PASS) cutoff is the value on a patient-reported outcome measure beyond which patients consider themselves to be “feeling well.” There are limited data regarding the PASS threshold for non-English versions of the International Knee Documentation Committee–Subjective Knee Form (IKDC-SKF).

Purpose:

To establish the PASS cutoff for the Thai version of the IKDC-SKF for patients undergoing primary anterior cruciate ligament reconstruction (ACLR) and to identify factors to achieve PASS after surgery.

Study Design:

Cohort study (diagnosis); Level of evidence, 3.

Methods:

Included in this study were patients aged 18 to 50 years who had undergone primary unilateral ACLR between January 2016 and February 2020. After enrollment, patients completed the Thai IKDC-SKF and answered the anchor question for determining the PASS.

Results:

Questionnaires were sent to 321 patients, of whom 173 (53.9%) responded. The vast majority (156 patients; 90.2%) considered themselves to have achieved the PASS. This group of patients had significantly higher IKDC scores than did those who did not have an acceptable symptom state (79.6 ± 14.2 vs 60.7 ± 16.5; P < .001). The receiver operating characteristic curve of the IKDC score for predicting the PASS had an area under the curve of 0.82 (95% CI, 0.72-0.91). The optimum PASS cutoff of the Thai IKDC-SKF was a score of 74.2 (sensitivity, 0.72; specificity, 0.82). Factors that provided favorable odds for achieving the PASS were the use of a hamstring tendon autograft (odds ratio, 4.1; 95% CI, 1.5-20.6) and the absence of a patellofemoral chondral lesion (odds ratio, 3.8; 95% CI, 1.03-14.1).

Conclusion:

For patients undergoing ACLR, the cutoff for the PASS of the Thai version of the IKDC-SKF was a score of 74.2. Two surgery-related factors provided favorable odds for achieving the PASS: the use of a hamstring tendon autograft and the absence of a patellofemoral chondral lesion.

中文翻译：

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泰国 IKDC 主观膝关节形态在原发性 ACL 重建后患者可接受症状状态的临界值

背景：

患者可接受的症状状态 (PASS) 截止值是患者报告的结果测量值，超过该值患者认为自己“感觉良好”。关于国际膝关节文献委员会 - 主观膝关节表 (IKDC-SKF) 非英文版本的通过阈值的数据有限。

目的：

为接受原发性前交叉韧带重建 (ACLR) 的患者建立泰语版 IKDC-SKF 的 PASS 截止值，并确定手术后达到 PASS 的因素。

学习规划：

队列研究（诊断）；证据水平，3。

方法：

本研究包括 2016 年 1 月至 2020 年 2 月期间接受原发性单侧 ACLR 的 18 至 50 岁患者。入组后，患者完成了泰国 IKDC-SKF 并回答了确定 PASS 的锚定问题。

结果：

向 321 名患者发送了调查问卷，其中 173 名（53.9%）做出了回应。绝大多数人（156 名患者；90.2%）认为自己已通过 PASS。这组患者的 IKDC 评分显着高于没有可接受症状状态的患者（79.6 ± 14.2 vs 60.7 ± 16.5；P < .001）。用于预测 PASS 的 IKDC 评分的受试者工作特征曲线的曲线下面积为 0.82（95% CI，0.72-0.91）。泰国 IKDC-SKF 的最佳 PASS 截止值为 74.2（敏感性，0.72；特异性，0.82）。为达到 PASS 提供有利几率的因素是使用腘绳肌腱自体移植物（优势比，4.1；95% CI，1.5-20.6）和没有髌股软骨病变（优势比，3.8；95% CI，1.03） -14.1)。

结论：

对于接受 ACLR 的患者，泰语版 IKDC-SKF 的 PASS 分值为 74.2。两个与手术相关的因素为实现 PASS 提供了有利的机会：使用腘绳肌腱自体移植物和没有髌股软骨损伤。