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Purpose: comparison of electromyographic activity of quadriceps muscle in persons with unilateral traumatic transtibial amputation using patellar tendon bearing supracondylar endoskeletal prosthesis with the unaffected limb in weight bearing positions.
Method: 30 individuals aged 18-60 years were assessed using surface electromyography with functional level K3 according to K-level functional assessment scale to compare the activity of quadriceps of affected side using patellar tendon bearing supracondylar endoskeletal prosthesis with the unaffected side. The data was analysed using paired t-test.
Result: There was a significant difference in the activity of VMO and VLO muscles of the quadriceps in high sitting positions. There was also a significant difference in the activity of VMO muscle in single limb stance and bipedal stance. However, there was no significant difference between the activity of VLO muscle in bipedal stance but there was reduced activity of VLO muscle in the prosthetic limb in single limb stance.
Conclusion: The quadriceps activity was reduced in the affected limb in high sitting position, single limb stance and bipedal stance. However, no difference in the muscle activity was noted in VLO muscle in bipedal stance.
Keywords: trans tibial amputation, patellar tendon bearing supracondylar prosthetis, surface electromyography.
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