Repositioning patients in bed is the most common patient handling activity and is associated with musculoskeletal disorders in caregivers. Hospital bed features may mitigate the risk of injury. The current study investigated the effect of bed features on the physical stress on caregivers. Ten nurses were recruited to perform three repositioning activities. Hand forces were recorded, and spine loading was estimated using a dynamic biomechanical model. Results demonstrated that except for the peak L5/S1 compressive load in the turning task, the use of assistive features significantly reduced the physical stresses for all repositioning activities. However, recommended thresholds for injury were still exceeded in many conditions. Compared with spinal load, hand force was much higher relative to the injury thresholds, suggesting a greater risk of shoulder and upper extremity injuries than low back injury. Mechanical lift equipment remains the safest and most robust way to reposition a patient.

在床上重新定位患者是最常见的患者处理活动，并且与护理人员的肌肉骨骼疾病有关。医院病床的特点可以降低受伤的风险。目前的研究调查了床位特征对护理人员身体压力的影响。招募了 10 名护士进行三项重新定位活动。记录手部力量，并使用动态生物力学模型估计脊柱负荷。结果表明，除了车削任务中的峰值 L5/S1 压缩载荷外，辅助功能的使用显着降低了所有重新定位活动的物理应力。然而，在许多情况下仍然超过了推荐的伤害阈值。与脊柱负荷相比，手的力量相对于损伤阈值要高得多，表明肩部和上肢受伤的风险比腰部受伤的风险更大。机械移位设备仍然是重新定位患者的最安全、最可靠的方式。