N | Region | Mainly monitored muscles | preoperative deficit | OP time | baseline | Test With EP Changes | Neurological deterioration | Recovery Time |
---|---|---|---|---|---|---|---|---|
1 | L4-L5 | Tibialis anterior | + | 200 min | Pathological ncEP | MEP EMG | motor deficit sensory deficit | 5 day |
2 | L3- L4 | Rectus femoris | – | 180 min | All potentials normal | MEP EMG | motor deficit | 5 day |
3 | L3- L4 | Rectus femoris | – | 190 min | All potentials normal | MEP SEP | motor deficit | 7 day |
4 | L5-S1 | Gastrocnemius lateral head | – | 210 min | All potentials norma | SEP MEP EMG | motor deficit sensory deficit | 6 day |
5 | L5-S1 | Gastrocnemius lateral head | + | 170 min | Pathological ncEP | MEP EMG | motor deficit | 5 day |
6 | L3- L5 | Rectus femoris, Tibialis anterior | – | 220 min | All potentials normal | SEP EMG | sensory deficit motor deficit | 7 day |
7 | L4-L5 | Tibialis anterior | – | 160 min | All potentials norma | MEP SEP | motor deficit | 7 day |