Vol.1, No 9, 2002 pp. 1 - 10
UDC 796.421.012
Scientific Paper
A MOTION ANALYSIS OF THE LOWER EXTREMITY
DURING GAIT WITH SPECIAL REGARD
TO THE EMG ACTIVITY OF M. ADDUCTOR LONGUS
Rita M. Kiss1, Zsidai Knoll2
1Academic Research Group of Structures,
1521 Budapest, Bertalan L. u. 2., Hungary
2Found MEDICaMENTOR 1021 Budapest,
Pálos u. 3., Hungary
E-mail: kiss@vbt.bme.hu
Abstract. This study used a comprehensive approach including kinematic
and EMG data analysis to determine the electromiographical pattern of m.
adductor longus. The study was performed on 105 healthy subjects. Gait
analysis was performed using the zebris three-dimensional ultrasound-based
system with surface electromyography (zebris). Kinematic data (spatial-temporal
parameters, knee and pelvic joint kinematics) were recorded for the lower
limb. The examined muscles include vastus lateralis and medialis, biceps
femoris and adductor longus. The EMG traces of m. adductor longus show
an adductor longus avoidance gait for a small part of subjects, which does
not depend on gender and age. The results suggest that the reduced rotation
of the thigh and the pelvis could result in a reduced rise in adductor
longus EMG activity during pre-swing.
Key words: gait analysis, 3D kinematics, electromyography, m.
adductor longus
ANALIZA POKRETA DONJIH EKSTREMITETA TOKOM
ZAMAHA SA SPECIJALNIM OSVRTOM NA EMG AKTIVNOST M. ADDUCTOR LONGUS-A
U ovoj studiji korišćen je opsežan pristup koji uključuje kinematičke i
EMG podatke za analizu kako bi se odredio elektromiografski obrazac m.
adductor longus-a. Studija je obuhvatila 105 zdravih ispitanika. Analiza
hoda je urađena korišćenjem "zebris" trodimenzionalnog ultrazvučnog sistema
sa površinskom elektromiografijom ("zebris"). Kinematički podaci (spacijalno-temporalni
parametri, kinematika kolena i pelvičnog dela) su beleženi za donje ekstremitete.
Ispitivani mišići uključuju m. vastus lateralis i medialis, m. biceps femoris
i m. adductor longus. Tragovi EMG za m. adductor longus pokazuju pad "izbegavanja"
hoda za mali broj ispitanika, a koji ne zavisi od pola i uzrasta. Rezultati
pokazuju da bi redukovana rotacija butina i pelvisa mogla izazvati smanjeno
podizanje m. adductor longus-a i EMG aktivnost u periodu pred zamah.
Ključne reči: analiza hoda, 3D-kinematika, elektromiografija,
m.adductor longus.
