Khorami Fatemeh, Foroutan Yalda, Sparrey Carolyn J
Mechatronic Systems Engineering, Simon Fraser University, Surrey, British Columbia, Canada.
International Collaboration on Repair Discoveries (ICORD), Vancouver, British Columbia, Canada.
PLoS One. 2025 Aug 12;20(8):e0328054. doi: 10.1371/journal.pone.0328054. eCollection 2025.
Hip soft tissue biomechanics has a significant effect on hip loading and fracture risk during falls. Despite the high dehydration rate in older adults, athletes, and outdoor workers and its association with a higher risk of falls, the effect of dehydration on hip soft tissue biomechanics is unknown. Twenty participants (13 females and 7 males, aged 18-35) underwent indentation tests and ultrasound imaging over the greater trochanter in both hydrated and dehydrated states. We assessed the hydration levels using a urine color chart and measured the tissue thicknesses via ultrasound. Results showed a significant increase in peak force (from 12.67 ± 9.09 N to 15.46 ± 9.23 N, p < 0.05) under dehydration. We observed notable sex differences, with males exhibiting higher stiffness and energy absorption than females, despite variations in peak force. Fat thickness emerged as a critical predictor of biomechanical response, particularly in the dehydrated state. These findings underscore the importance of hydration in maintaining soft tissue integrity and reducing injury risks. Future work should explore chronic dehydration effects and include broader demographic variations to enhance fall prevention strategies and clinical practice. This research also highlights the need for targeted hydration management in at-risk populations.
髋部软组织生物力学对跌倒时的髋部负荷和骨折风险有显著影响。尽管老年人、运动员和户外工作者的脱水率很高，且脱水与更高的跌倒风险相关，但脱水对髋部软组织生物力学的影响尚不清楚。20名参与者（13名女性和7名男性，年龄在18 - 35岁之间）在水合状态和脱水状态下均接受了大转子处的压痕测试和超声成像。我们使用尿色图表评估水合水平，并通过超声测量组织厚度。结果显示，脱水状态下峰值力显著增加（从12.67±9.09 N增至15.46±9.23 N，p<0.05）。我们观察到显著的性别差异，尽管峰值力有所变化，但男性的刚度和能量吸收高于女性。脂肪厚度成为生物力学反应的关键预测因素，尤其是在脱水状态下。这些发现强调了水合作用在维持软组织完整性和降低受伤风险方面的重要性。未来的工作应探索慢性脱水的影响，并纳入更广泛的人口统计学差异，以加强跌倒预防策略和临床实践。这项研究还强调了对高危人群进行有针对性的水合管理的必要性。
