Journal of Korean Foot and Ankle Society

Table. 1.

Table. 1.

Electromyography, 20-Year-Old Patient

Muscle Nerve ROOT IA SP MUAP INT Comments
PSW FIB Amp Dur Conf
20 days after surgery
R ight tibialis anterior Deep peroneal L45 +++ (200~300) +++ (200~300) - - - S PSW, fibrillation
Single MUAP
Right extensor hallucis longus Deep peroneal L5S1 +++ (200~300) +++ (200~300) - - - S PSW, fibrillation
Single MUAP
Right peroneus longus Superficial peroneal - - - - - - - Non-testable
Right extensor digitorum brevis Deep peroneal L5S1 +++ (200~300) +++ (200~300) - - - Z Zero MUAP
6 months after surgery
Right tibialis anterior Deep peroneal L45 0 0 2~4 5~8 N R Reduced recruitment
Right extensor hallucis longus Deep peroneal L5S1 0 0 2~4 5~8 N R Reduced recruitment
Right peroneus longus Superficial peroneal L5S1 N 0 0 2~4 5~8 N F Normal
Right extensor digitorum brevis Deep peroneal L5S1 0 0 2~4 5~8 N R Reduced recruitment
1 year after surgery
Right tibialis anterior Deep peroneal L45 N 0 0 2~4 5~8 N F Normal
Right extensor hallucis longus Deep peroneal L5S1 N 0 0 2~4 5~8 N F Normal
Right peroneus longus Superficial peroneal L5S1 N 0 0 2~4 5~8 N F Normal
Right extensor digitorum brevis Deep peroneal L5S1 0 0 2~4 5~8 N F Reduced IA

IA: insertional activity, SP: spontaneous activity, PSW: positive shock wave, FIB: fibrillation, MUAP: motor unit action potential, Amp: amplitude, Dur: duration, Conf: configuration, N: normal, INT: interference, S: single MUAP, Z: zero MUAP, R:reduced interference, F: full, -: not-testable.

J Korean Foot Ankle Soc 2022;26:136-42 https://doi.org/10.14193/jkfas.2022.26.3.136
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