Fig. 1.

MEP monitoring samples depicting typical findings. A: Example of segmental injury detected by MEP (case 1, Table 3). MEP recorded from APB muscle was nearly lost. B: Example of segmental injury detected in MEP (case 4, Table 3). MEP recorded from DD muscle was nearly lost. C: Example of long tract injury detected in MEP (case 2, Table 3). MEPs recorded from the APB and TA muscles were lost. MEP recorded from the AH muscle was nearly lost.