To study the changes in motor function of hindlimb segments after spinal cord hemi-section in rhesus monkeys. Methods: Three adult female rhesus monkeys received a hemi-section in the thoracic spinal cord at T7-T9. Hindlimb kinematic recordings were made prior to and at 6 and 12 weeks after the procedure. The amplitude of elevation angles of hindlimb segments and the correlation between elevation angles in different time points was calculated and analyzed. Results: At both 6 and 12 weeks after surgery, the thigh segment elevation angle was smaller than that before surgery (P<0.001), and there was no significant difference between elevation angles at 6 and 12 weeks after surgery (P>0.05). After surgery, shank and foot elevation angles were both smaller than those before surgery (P<0.01), but elevation angles at 12 weeks were greater than those at 6 weeks (P<0.01 or P<0.001). At 6 weeks and 12 weeks after surgery, the correlation coefficient between thigh and shank elevation angles was lower than that before surgery. At 6 weeks after surgery, the correlation coefficient between shank and foot elevation angles was lower than that before surgery (P<0.001); 12 weeks after surgery, there was an increase in the correlation coefficient between shank and foot elevation angles, but this value remained lower than that before surgery (P<0.01). At 6 weeks and 12 weeks after surgery, there was no significant difference between the correlation coefficient between thigh and shank elevation angles and that between shank and foot elevation angles (P> 0.05). Conclusion: All hindlimb segments showed severe motor dysfunction after spinal cord injury and recovered spontaneously after a period of time; this may shed light on the plasticity of recovery of nerve conduction in the injured spinal cord.