Health and Rehabilitation Research Institute, Auckland University of Technology, 90 Akoranga Drive, Northcote, Auckland, 0627, New Zealand.
Health and Rehabilitation Research Institute, Auckland University of Technology, 90 Akoranga Drive, Northcote, Auckland, 0627, New Zealand; Waitemata Pain Service, Department of Anaesthesiology and Perioperative Medicine, North Shore Hospital, Waitemata DHB, 124 Shakespeare Road, Takapuna, Westlake, Auckland, 0622, New Zealand.
Musculoskelet Sci Pract. 2021 Oct;55:102432. doi: 10.1016/j.msksp.2021.102432. Epub 2021 Jul 22.
Symptomatic hand osteoarthritis (OA) is severely disabling condition. Limited evidence has focused on force control measures in this population.
It was the aim of the present study to determine whether force matching accuracy and steadiness are impaired in people with hand OA. In addition, the relationship between force control measures (accuracy and steadiness) and measures of hand function and pain in people with symptomatic hand OA was explored.
Case-control study.
Sixty-two participants with symptomatic hand OA and 26 healthy pain-free controls undertook an isometric grip and pinch force matching task at 50 % of their maximum voluntary contraction. Average pain hand pain was recorded. In addition, the Disability of the Arm Shoulder and Hand Questionnaire (DASH), and the Functional Index of Hand Osteoarthritis were collected.
Grip force-matching accuracy and steadiness were significantly impaired in the hand OA group compared to controls (P < 0.05). Pinch force-matching error was greater in people with hand OA (P < 0.05), however, pinch force steadiness was not different between groups. There was a learning effect in people with hand OA, with resolution of force matching impairments with task repetition. A small positive correlation was identified between grip force control and the DASH. No association was found between other measures of force control and self-reported measures of function or pain.
People with hand OA presented with greater impairments in measures of submaximal force control. These were correlated with self-reported hand function but not pain. Future studies may wish to examine whether objective measures of functional performance are related to force-matching error and steadiness.
症状性手部骨关节炎（OA）是一种严重致残的疾病。现有有限的证据集中在该人群中的力控制措施上。
本研究旨在确定手部 OA 患者的力量匹配准确性和稳定性是否受损。此外，还探讨了手部 OA 患者的力量控制措施（准确性和稳定性）与手部功能和疼痛测量值之间的关系。
病例对照研究。
62 名手部症状性 OA 患者和 26 名健康无痛对照者在最大自主收缩的 50%时进行等长握力和捏力匹配任务。记录平均手部疼痛。此外，还收集了手臂肩手残疾问卷（DASH）和手部骨关节炎功能指数。
与对照组相比，手部 OA 组的握力匹配准确性和稳定性明显受损（P<0.05）。手部 OA 患者的捏力匹配误差较大（P<0.05），但组间捏力稳定性无差异。手部 OA 患者存在学习效应，随着任务重复，力量匹配障碍得到解决。握力控制与 DASH 之间存在微弱的正相关。其他力量控制测量值与自我报告的功能或疼痛测量值之间没有关联。
手部 OA 患者在亚最大力量控制测量中表现出更大的损伤。这些与自我报告的手部功能相关，但与疼痛无关。未来的研究可能希望检验客观的功能表现测量值是否与力量匹配误差和稳定性有关。
