Needle electromyography Muscle Fibs/PSWs MUAP
Recruitment Left tibialis anterior ++/ ++ Normal Reduced Left peroneus longus ++/ ++ Normal Reduced Left biceps femoris (short head) None Normal Complete Left gastrocnemius (medial head) None Normal Complete Left tensor fascia lata None Normal Complete Right tibialis anterior None Normal Complete Right peroneus longus None Normal Complete Right biceps femoris (short head) None Normal Complete Right gastrocnemius (medial head) None Normal Complete Fibs: Fibrillation potentials; PSWs: Positive sharp waves; MUAP
: Motor unit action potential.
Electromyography can demonstrate fibrillation potentials and positive sharp waves in the more distal weak limb muscles along with decreased recruitment of polyphasic, long-duration, large-amplitude MUAPs
They do not correspond to the SENIAM recommendations which focuses merely on amplitude and frequency characteristics, timing properties and MUAP
width and shape .
EMG reveals fibrillation potentials, positive sharp waves, and early recruitment of myopathic MUAP
in proximal muscles.
Bilgisayar "fare"si hatlarin uzerine getirilip sag tusa basildiginda mikrovolt ([micro],V) degeri uzerinden MUAP
Right median, ulnar and radial nerve innervating the distal muscles had neurogenic motor unit action potential (MUAP
) changes with fewer MUAPs
The instrument of our trial is thought to pick up the EMG signals of the EPP below threshold that generates MUAPs
to make observable muscle contraction.
Analyzing the MUAPs
can also be used to gauge the duration and progression of LSS.