Alsayed Abdallah, Kamil Raja, Rowe Veronica, Salim Mazatulfazura S F, Ramli Hafiz R, As'arry Azizan
Department of Electrical and Electronic Engineering, Faculty of Engineering, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Laboratory of Computational Statistics and Operations Research, Institute for Mathematical Research, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Diagnostics (Basel). 2021 Feb 2;11(2):225. doi: 10.3390/diagnostics11020225.
Static pinch strength against a therapist's gentle pull is evaluated using the pincer grasp component of the Fugl Meyer Assessment (FMA) to assess pinch impairment after stroke. In the pincer grasp component, therapists applied a gentle pull to distinguish between a score of 1 (moderate pinch impairment) and a score of 2 (no pinch impairment). The gentle pull is described as a resistance equivalent to a manual muscle test (MMT) score 4/5. The accepted use of "gentle" as a qualitative description for the pull results is a non-standardized subjective interpretation. The goal of this paper was to determine the quantitative value of the gentle pull applied by the therapists as in their clinical practice using a pinch-pull gripping system. The FMA protocol was used to standardize the body and fingers positions of three occupational therapists who were then instructed to apply a gentle pull of 4/5 MMT using their thumb and index fingers (in a tip-to-tip pinch). The results show that the therapists exerted a mean gentle pull (4/5 MMT score) of 6.34 ± 0.98 N with high reliability and acceptable repeatability. In investigating the ability of healthy subjects to resist the gentle pull, 50 adult male volunteers were instructed to pinch the pincer object and resist a dynamic loading exerted by the pinch-pull gripping system as much as possible to the moment the pincer object slips away. The results show that all subjects were able to exert a pulling force higher than the quantitative value of the gentle pull.
使用Fugl Meyer评估量表（FMA）的捏取部分来评估中风后捏力损伤，通过对抗治疗师的轻柔拉力来评估静态捏力。在捏取部分，治疗师施加轻柔拉力以区分1分（中度捏力损伤）和2分（无捏力损伤）。这种轻柔拉力被描述为相当于徒手肌力测试（MMT）4/5级的阻力。将“轻柔”作为拉力结果的定性描述的公认用法是一种未标准化的主观解释。本文的目的是使用捏拉抓握系统确定治疗师在临床实践中施加的轻柔拉力的定量值。采用FMA方案规范了三名职业治疗师的身体和手指位置，然后指示他们用拇指和食指（指尖对指尖捏取）施加4/5 MMT的轻柔拉力。结果表明，治疗师施加的平均轻柔拉力（MMT 4/5级评分）为6.34±0.98 N，具有高可靠性和可接受的重复性。在研究健康受试者抵抗轻柔拉力的能力时，50名成年男性志愿者被指示捏取夹捏物体，并尽可能抵抗夹拉抓握系统施加的动态负荷，直到夹捏物体滑落。结果表明，所有受试者施加的拉力均高于轻柔拉力的定量值。
