Studying EMG and electrogoniometric in patellofemoral instability

Abstract

Any condition that disturbs the adequate motor control, may result in a pathological gait, leading to primary damage in gait or creating secondary compensatory mechanisms to keep an useful function. The patellofemoral instability is a pathological condition in which gait reestablishment means greater functionality to the patient. Hence, it arises the necessity of studying the biomechanical behavior of the gait in such individuals as a way of optimizing the rehabilitation process. The present study had as objective to present the electromyographic behavior of Vastus MedialisObliquous (VMO) and Vastus Lateralis (VL), and the electrogoniometric behavior of the knee joint, during the gait performance in acclivity and declivity, in ten healthy volunteers (control group), and lately to verify if it presented any changing during the gait in ten volunteers with patellofemoral instability (pathologic group) to precociously identify this pathology. The electromyographic and electrogoniometric data analysis were collected using two pairs of active bipolar differential surface electrodes and a electrogoniometer, The results, by a crossed correlation and variation coefficient analysis, have not shown statistically significant differences in volunteers with patellofemoral instability, when compared to the control group.