arXiv:2504.10163cs.RO2025-04被引 2

新型康复机器人精准模拟肩胛肱骨节律,纠正冻结肩代偿动作。

Shoulder Range of Motion Rehabilitation Robot Incorporating Scapulohumeral Rhythm for Frozen Shoulder

  • 通过6自由度机构与肩胛骨压紧装置,同步控制肩关节运动与肩胛稳定。
  • 实测误差低于1度,能有效延迟代偿性耸肩发生。
  • 适合需要个性化被动运动康复的冻结肩患者使用。

本文提出一种新型康复机器人,旨在解决冻结肩患者被动活动范围(PROM)训练中的难题。冻结肩表现为盂肱关节活动受限及肩胛肱骨节律紊乱,而治疗师辅助干预对恢复正常肩功能效果显著。现有机器人虽能模拟自然肩部生物力学,却无法稳定代偿性动作(如耸肩),影响康复效果。本设计采用6自由度(DoF)机构,包含5个肩部运动自由度和一个创新的1自由度肩胛骨压紧装置。系统采用个性化双阶段操作:先记录健侧正常运动模式,并用于引导患侧运动。实验结果表明,机器人可高精度复现记录的运动模式,均方根误差(RMSE)始终低于1度。在模拟冻结肩条件下,该机器人有效抑制了肩胛骨上抬,延缓代偿动作出现,并使患侧肩关节在抬臂动作(如外展、前屈)中更贴近正常运动轨迹。研究证实该系统具备自动化执行PROM训练并纠正代偿动作的潜力,为冻结肩患者提供了一种先进、个性化的康复基础。

原文摘要 · Abstract (English)

This paper presents a novel rehabilitation robot designed to address the challenges of Passive Range of Motion (PROM) exercises for frozen shoulder patients by integrating advanced scapulohumeral rhythm stabilization. Frozen shoulder is characterized by limited glenohumeral motion and disrupted scapulohumeral rhythm, with therapist-assisted interventions being highly effective for restoring normal shoulder function. While existing robotic solutions replicate natural shoulder biomechanics, they lack the ability to stabilize compensatory movements, such as shoulder shrugging, which are critical for effective rehabilitation. Our proposed device features a 6 Degrees of Freedom (DoF) mechanism, including 5 DoF for shoulder motion and an innovative 1 DoF Joint press for scapular stabilization. The robot employs a personalized two-phase operation: recording normal shoulder movement patterns from the unaffected side and applying them to guide the affected side. Experimental results demonstrated the robot's ability to replicate recorded motion patterns with high precision, with Root Mean Square Error (RMSE) values consistently below 1 degree. In simulated frozen shoulder conditions, the robot effectively suppressed scapular elevation, delaying the onset of compensatory movements and guiding the affected shoulder to move more closely in alignment with normal shoulder motion, particularly during arm elevation movements such as abduction and flexion. These findings confirm the robot's potential as a rehabilitation tool capable of automating PROM exercises while correcting compensatory movements. The system provides a foundation for advanced, personalized rehabilitation for patients with frozen shoulders.

康复机器人冻结肩运动控制

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