Tan V, Klotz M J, Greenwald A S, Steinberg M E
Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania, Philadelphia, USA.
Am J Orthop (Belle Mead NJ). 1998 Oct;27(10):673-7.
Patients with diseased hips often must carry objects while walking, yet they are rarely instructed which hand to use because little has been published on the subject. We sought to evaluate the situation mathematically by determining the hip forces that result when a load is carried in the ipsilateral versus the contralateral hand. Using a free-body diagram of single-leg supported stance, we found that when a load was carried in the contralateral hand, the resultant forces on the hip were increased considerably. Conversely, when the weight was carried in the ipsilateral hand, the forces were actually lower than when no weight was carried at all. Thus, carrying a weight on the opposite side resulted in hip forces that were substantially greater than when the weight was carried on the same side.
患有髋关节疾病的患者在行走时通常需要携带物品，但很少有人指导他们该用哪只手，因为关于这个问题的相关研究报道很少。我们试图通过确定在患侧与对侧手持物时所产生的髋部受力情况，来对这一情况进行数学评估。通过单腿支撑站立的受力分析图，我们发现，当在对侧手持物时，髋部所受合力会大幅增加。相反，当在患侧手持物时，其受力实际上比完全不持物时还要低。因此，在身体对侧持物时所产生的髋部受力，要比在同侧持物时大得多。
