Manual material handling is common in supermarkets and may be a contributing factor to the high prevalence of work-related musculoskeletal disorders, particularly to the lower back. This cross-sectional study applied state-of-the-art musculoskeletal models driven by kinematic data obtained in two supermarkets to estimate joint reaction forces in the knees, shoulders and lumbar spine under dynamic lifting conditions. Based on 1479 lifts from 15 workers, 8 tasks for which the compression or shear forces in the L5-S1 joint exceeded well-known biomechanical tolerance limits were identified. High shoulder forces were associated with lifting relatively heavy merchandise to high shelves, while the weight of the handled merchandise was the main predictor of high knee forces. The study addressed well-known limitations associated with traditional lifting analysis tools and was the first to present a detailed analysis of the biomechanical loads during manual material handling tasks in the supermarket sector based on field measurements.

手工材料处理在超市很常见，可能是导致与工作相关的肌肉骨骼疾病（尤其是下背部）高发的一个因素。这项横断面研究应用了由两家超市获得的运动学数据驱动的最先进的肌肉骨骼模型，以估计动态提升条件下膝盖、肩部和腰椎的关节反作用力。基于 15 名工人的 1479 次举重，确定了 8 项任务，其中 L5-S1 关节的压缩或剪切力超过了众所周知的生物力学公差极限。高肩力与将相对较重的商品抬到高架子上有关，而搬运商品的重量是高膝关节力的主要预测因素。