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The Effect Of Lower Limb Muscles On Knee Angle Changing In Sagittal Plane For Patient With Patellafemoral Pain

تأثير عضلات الطرف السفلي في تغيرات زاوية الركبة في المستوي السهمي للمصابين بالتناذر الفخذي الداغصي

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 Publication date 2012
and research's language is العربية
 Created by Shamra Editor




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The aim of this paper is to study the relation between muscles electrical activity and knee movement during walking for patient with patellafemoral pain by measurement both of electromyography (EMG) and changing of knee angle by electro-goniometer. The start and end of the gait cycle were determined by foot sensors, A program was designed for signal processing of the data, Testes were carried out at Hamish hospital in Damascus. Subjects were divided into two groups: 46 normal subjects and 21 patient. Final results also showed that hamstring group activity and galf group activity decreases during stance phase because knee cancel it first flexion with increase in quadriceps femoris activity to keep extension of knee. In swing phase, it is noted that the decrease in knee flexion and it depends on the increase in quadriceps femoris activity in all the period of swing phase, but hamstring group activity increases to keep hip instability, that is, it responds to increase activity of quadriceps femoris with less knee flexion. The activity of subject muscles in the period of gait cycle is less than normal muscles.

References used
(LLOYD،D.G; BESIER،T.F. Emg driven musculoskeletal modelling to estimate muscle forces and knee joint moment in vivo. journal of biomechanics، 36، 2003، (765-776
BOGEY.A; ROSS.D; BARNES،L.M.; PERRY،J.A. Computer Algorithms to Characterize Individual Subject EMG Profiles During Gait. American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation، 1992
MCALINDON،T.E; COOPER.C. KIRWAN،J.R and DIEPPE،P.A. Determinants of disability in osteoarthritis of the knee. Annals of the Rheumatic Diseases;52;258- 262، doi:10.1136/ard.52.4. 1993
SCOTT،N،W. The knee. Mosby-year book USA، 1994
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