Modified Bishop scoring system.

Objective Cubital tunnel syndrome is a common peripheral neuropathy of the upper extremity. Anterior transposition of the ulnar nerve is an established surgical treatment option for this condition. This study aimed to introduce a novel musculofascial lengthening technique that uses only a portion of the flexor-pronator muscle mass for submuscular anterior transposition of the ulnar nerve and investigate its clinical outcomes. Methods We evaluated 28 patients (29 cases; 1 patient had bilateral involvement) diagnosed with cubital tunnel syndrome who were treated with surgical decompression and submuscular anterior transposition of the ulnar nerve using our novel technique. Mean follow-up was 19.1 months (range, 12–31). Patient-reported outcomes were assessed using the Boston Carpal Tunnel Questionnaire (BCTQ), Disabilities of the Arm, Shoulder, and Hand (DASH) Questionnaire, and numeric rating scale (NRS) for pain. Objective outcomes including light touch perception, static two-point discrimination, and grip strength were also assessed. Modified Bishop score and postoperative complications were also evaluated. Results BCTQ symptom severity and functional status scores, DASH score, and NRS for pain score showed significant improvement after surgery. Light touch perception, static two-point discrimination, and grip strength also significantly improved after surgery. All patients showed excellent or good results according to the modified Bishop scoring system. No recurrence or complications occurred. Conclusion Our novel musculofascial lengthening technique that uses only a portion of the flexor-pronator muscle mass for submuscular anterior transposition of the ulnar nerve reliably achieves good results with minimal complications in patients with cubital tunnel syndrome.研究目的 肘管综合征（Cubital tunnel syndrome）是一种常见的上肢周围神经病，尺神经前置术是该病症公认的外科治疗选择。本研究旨在介绍一种新型肌筋膜延长技术——该技术仅利用部分屈肌旋前肌群完成尺神经肌下前置术，并探究其临床疗效。 研究方法 本研究纳入28例确诊为肘管综合征（Cubital tunnel syndrome）的患者（共29例患肢，其中1例为双侧受累），均采用本团队的新型技术行尺神经减压联合肌下前置术治疗。患者平均随访时长为19.1个月（范围：12~31个月）。采用波士顿腕管问卷（Boston Carpal Tunnel Questionnaire, BCTQ）、上肢肩手功能障碍问卷（Disabilities of the Arm, Shoulder, and Hand, DASH）以及疼痛数字评分量表（numeric rating scale, NRS）评估患者报告结局；同时评估轻触觉感知、静态两点辨别觉、握力等客观结局指标。此外，还对改良Bishop评分与术后并发症情况进行了评价。 研究结果 术后患者的BCTQ症状严重程度与功能状态评分、DASH评分以及疼痛NRS评分均得到显著改善。轻触觉感知、静态两点辨别觉与握力亦较术前显著提升。根据改良Bishop评分系统，所有患者均获得优良疗效；术后无复发或并发症发生。 研究结论 针对肘管综合征（Cubital tunnel syndrome）患者，本研究提出的仅利用部分屈肌旋前肌群完成尺神经肌下前置术的新型肌筋膜延长技术，可稳定获得良好临床疗效，且并发症发生率极低。