A COMPARATIVE STUDY OF ELECTROMYOGRAPHIC ACTIVITY OF QUADRICEPS MUSCLE IN PERSONS WITH UNILATERAL TRANSTIBIAL AMPUTATION USING PATELLAR TENDON BEARING SUPRACONDYLAR ENDOSKELETAL PROSTHESIS OF THE AGE GROUP 18-60 YEARS WITH UNAFFECTED LIMB DURING ASCENDING AND DESCENDING STEPS
Abstract
In transtibial amputees larger strength discrepancies between the intact and the amputated limb contribute to the decreased function of the prosthetic side limb, asymmetrical limb loading and an increased risk of secondary musculoskeletal complications in the intact limb. This study examines the limb loading rate and the difference in limb loading between the intact limb and the amputated limb during ascending and descending step activity using surface electromyography. A cross-sectional observational study was conducted on 30 transtibial amputees between 18-60 years using PTB- SC Endo skeletal Prosthesis with foot piece. Electromyographic activity of the quadriceps muscle (VMO and VL) of both the limbs was evaluated using surface EMG machine and compared during ascending and descending steps. Statistical Analysis revealed that there is no significant difference in the EMG activity of Quadriceps muscle of the intact and amputated limb during ascending and descending steps. It also found that the Quadriceps muscle recruitment was higher during descending steps than ascending steps along with no significant correlation between the isometric strength and the EMG activity of quadriceps muscle. There is no significant difference in the electromyographic activity of the quadriceps muscle in persons with unilateral transtibial amputation using patellar tendon bearing supracondylar endoskeletal prosthesis as compared to the unaffected limb during ascending and descending step.
Keywords
Transtibial amputation EMG activity Quadriceps muscle ascending and descending stepsDownload
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