[Purpose] A quantitative examination of the lower limb peripheral nervous system mobility (MON) was performed using the neurodynamic test. [Subjects and Methods] The subjects were 10 adult male subjects. The neural dynamics of the proximal and distal bifurcations of the tibial nerve in straight leg raises (SLR) of 0 and 45°, passive neck flexion (PNF), and ankle plantar flexion (PF) of 10° and dorsiflexion (DF) of 15° were examined using an ultrasonic diagnostic imaging apparatus. MON was defined as the difference between PNF of PF and DF at maximal SLR, and the neurodynamics and proximal/distal ratio were investigated. [Results] In DF at SLR of 0˚, the tibial nerve moved to the caudal side, and to the head side in the other conditions; and at SLR of 45°, there was a significant difference between the proximal and distal positions in PNF of DF. A strong negative correlation was found between the difference between PNF of PF and DF at maximal SLR and the proximal/distal ratio. [Conclusion] The nerve stretched after gliding against the increase in tension. The difference between PNF of PF and DF at maximal SLR suggested the possibility of quantitative evaluation of MON.
All Science Journal Classification (ASJC) codes