An overview of hand postures and aging on morphological changes of the median nerve

Background: High-resolution ultrasound is being widely used in carpal tunnel examination to understand morphological and biomechanical characteristics of the median nerve and surrounding anatomy structures. Main body: Healthy young and elderly men were recruited. The median nerve at proximal wrist region was examined by ultrasound imaging technique. A total of seven wrist angle was examined. Generally, the median nerve cross-sectional area of the elderly group is significantly larger than the young group. Short conclusion: Wrist posture in greater flexion or extension caused a larger decrease in the median nerve cross-sectional area across both groups.