Althoff Bernardo Figueira, Nakamoto João Carlos, Saito Mateus, Sorrenti Luiz, Escudero Ricardo Boso, Wataya Erick Yoshio
Intituto Vita, São Paulo, SP, Brasil.
Rev Bras Ortop (Sao Paulo). 2025 Aug 18;60(3):1-6. doi: 10.1055/s-0045-1810043. eCollection 2025 Jun.
To interpret, with objective data, the kinetic and kinematic control of gripper function associated with visual and stereognostic control.
In total, 34 young participants, without previous hand diseases or traumas, underwent pinch grip tasks with the wrist in a neutral position and at 45° of flexion. The tasks were repeated three times.
The movement difference in the neutral and 45° of flexion postures presented a significant correlation with the pulp-to-pulp distance variables (r values from 0.38 to 0.41; < 0.05). The strength difference in the neutral and 45° of flexion postures, with or without visual feedback, also showed a significant correlation (r values from 0.45 to 0.47; < 0.01). The movement and strength differences presented a significant correlation in the neutral posture without visual feedback (r = 0.77; < 0.001) and in the flexed posture with visual feedback (r = 0.48; = 0.004).
Visual feedback and wrist posture influence strength and movement control in gripping function in healthy adults. These findings reinforce the interdependence of control mechanisms in hand function. Postural adjustments and proprioception enhancement can optimize functional recovery, with implications for the development of specific tests and their application in actual clinical settings.
运用客观数据阐释与视觉及实体觉控制相关的抓握功能的动力学和运动学控制。
共有34名无手部既往疾病或创伤的年轻参与者，在手腕处于中立位和45°屈曲位时进行捏握任务。这些任务重复进行三次。
中立位和45°屈曲位姿势下的运动差异与指腹对指腹距离变量呈现显著相关性（r值范围为0.38至0.41；P＜0.05）。无论有无视觉反馈，中立位和45°屈曲位姿势下的力量差异也显示出显著相关性（r值范围为0.45至0.47；P＜0.01）。在无视觉反馈的中立位姿势下（r = 0.77；P＜0.001）以及有视觉反馈的屈曲位姿势下（r = 0.48；P = 0.004），运动和力量差异呈现显著相关性。
视觉反馈和手腕姿势会影响健康成年人抓握功能中的力量和运动控制。这些发现强化了手部功能控制机制的相互依存性。姿势调整和本体感觉增强可优化功能恢复，这对特定测试的开发及其在实际临床环境中的应用具有启示意义。
