To investigate the functional outcomes for patients who used a novel home-based rehabilitative system during the postoperative period after anterior cruciate ligament (ACL) reconstructions. Patients undergoing ACL reconstruction surgeries were prospectively enrolled. A home-based rehabilitation system, which is composed of a knee brace with a motion tracker, a mobile app, and a web portal, was applied. Patients could complete the rehabilitation exercise through the audio guidance and the real-time tracking system which displayed the achieved motions on the user interface of the app. Feedbacks from the patients, including the International Knee Documentation Committee (IKDC) scores, were collected and uploaded to the web portal. Each patient would meet a specialized physical therapist face-to-face once a month. At postoperative 6 months, every patient received a GNRB arthrometer examination and a Cybex isokinetic dynamometer examination. A total of 15 patients (10 males and 5 females) were enrolled and followed for at least 6 months. The mean time of return to full knee extension was 1.5 months. The mean difference in laxity measured by GNRB arthrometer at 134 N significantly improved at postoperative 6 months (1.8 ± 1.6 mm) compared to that measured preoperatively (3.4 ± 1.9 mm) (p = 0.024). The peak torques of flexor and extensor muscles measured by Cybex isokinetic dynamometer remained unchanged at postoperative 6 months (p = 0.733 and 0.394, respectively). The patients’ IKDC score became smaller at postoperative 1 month (p = 0.011) and significantly improved at postoperative 6 months (p = 0.002). Using a home-based rehabilitative knee brace system after ACL reconstruction is a viable option as patients maintained their knee muscle strengths maintained their muscle strength and achieve similar or better knee range of motion six months postoperatively.

中文翻译：

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一种新型的家庭康复膝关节支具系统是前交叉韧带重建术后康复的可行选择：附15例报告

调查在前交叉韧带 (ACL) 重建术后使用新型家庭康复系统的患者的功能结果。前瞻性招募了接受 ACL 重建手术的患者。应用了一个家庭康复系统，该系统由带有运动跟踪器的护膝、移动应用程序和门户网站组成。患者可以通过语音指导和实时跟踪系统完成康复练习，实时跟踪系统将完成的动作显示在应用程序的用户界面上。收集来自患者的反馈，包括国际膝关节文献委员会 (IKDC) 评分，并将其上传到门户网站。每位患者每月都会与专业的物理治疗师面对面会面一次。术后 6 个月，每位患者都接受了 GNRB 关节计检查和 Cybex 等速测力计检查。共有 15 名患者（10 名男性和 5 名女性）被纳入并随访至少 6 个月。恢复完全膝关节伸展的平均时间为 1.5 个月。与术前测量的（3.4 ± 1.9 mm）相比，术后 6 个月（1.8 ± 1.6 mm）通过 GNRB 关节计测量的 134 N 松弛度的平均差异显着改善（p = 0.024）。Cybex 等速测力计测量的屈肌和伸肌的峰值扭矩在术后 6 个月保持不变（分别为 p = 0.733 和 0.394）。患者的 IKDC 评分在术后 1 个月变小（p = 0.011），在术后 6 个月显着改善（p = 0.002）。