Mean Value of Median Nerve Cross-sectional Area in Healthy 20s and 30s in Busan Area

Abstract

This study was designed to investigate the median nerve cross-sectional area of the upper extremity which is the main cause of CTS in the 20s and 30s. The median nerve cross-sectional area (MNC-area) of each part of the upper limb was measured in healthy 20s and 30s females and males without neurological diseases or other diseases. This MNC-area was compared with the hand, wrist, finger, and other body indexes. The research group was divided into 20s female and male groups, and the 30s were also divided into female and male groups. In the comparison between the ages, the hand, and wrist configurations in the 30s were significantly higher than those of the 20s. The mean median nerve cross-sectional area was significantly larger in the male group than in the female group in both 20s and 30s, and it was larger in both men and women than in the 20s. Hand and wrist configurations were also positively correlated with the median nerve cross-sectional area in both 20s and 30s. The median values of hand ratio and wrist ratio were 2.26 and 0.65, respectively. This median value of hand ratio was inversely correlated with the median nerve cross-sectional area. The median nerve cross-area of the 20s was 6.88~7.38 mm 2 in the male group and 5.69~6.99 mm 2 in the female group, respectively. The median nerve cross-area of the 30s was 6.32~8.89 mm 2 in the male group and 6.15~7.17 mm 2 in the female group, respectively. The mean median nerve cross-sectional area was positively correlated with body mass index in both groups. Most of the variables were higher in their 30s than in their 20s.

Sonographic evaluation of median nerve cross‐sectional area in a normal Iranian population: A cross‐sectional study

“…These findings suggest the differences in median nerve CSA for different ethnicities. 6 The impact of these factors has been mentioned in several studies, 15,16,[20][21][22][23][24] and some have been evaluated in the present study. Bae et al found that CSA is significantly correlated with gender, height, weight, and BMI.…”

“…Some studies emphasize that MNCSA is influenced by BMI. 21 On the other hand, Higginbotham et al found no significant correlation between CSA and BMI. 22 A meta-analysis by Shiri et al suggests that a square-shaped wrist predicts CTS in both men and women.…”

“…The impact of these factors has been mentioned in several studies, 15,16,20–24 and some have been evaluated in the present study. Bae et al found that CSA is significantly correlated with gender, height, weight, and BMI 20 .…”

“…There are controversies regarding this association. Some studies emphasize that MNCSA is influenced by BMI 21 . On the other hand, Higginbotham et al found no significant correlation between CSA and BMI 22 …”

Potential Relationships between the Median Nerve Cross-Sectional Area and Physical Characteristics in Unilateral Symptomatic Carpal Tunnel Syndrome Patients

“…Regarding the relationships between physical characteristics and median nerve CSA, previous studies suggested a positive correlation between BMI and median nerve CSA [ 37 , 38 , 39 , 40 , 41 ]. Cartwright et al reported that mean age based on BMI was a major parameter for predicting median nerve CSA in healthy subjects [ 42 ].…”