Indian Journal of Physiotherapy & Occupational Therapy-An International Journal

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A Comparative Study to Analyse the Prevalance of VMO/VL Muscle Insufficiency in Patellofemoral Pain Syndrome Patients and Healthy Individuals - An Emg Based Study


Affiliations
1 Shree B. G. Patel, College of Physiotherapy, Anand, India
2 MPT(Musculoskeletal Conditions) Unique Care Physiotherapy Center, Baroda, India
     

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Background: PFPS describes anterior and retro patellar knee pain in the absence of other pathology. PFPS is one of the most common disorders of the knee accounts for 25% of knee injuries in sports medicine clinics. Prevalence rate is 20% in USA students and morbidity is directly related to activity of patients. EMG studies of normal subject have revealed that VMO /VL ratio is about 1:1 (power CM et al)

Objective: To study the VMO/VL ratio during ECCENTRIC, CONCENTRIC, ISOMETRIC contractions in PFPS patients and control groups.

Materials&Method: SUBJECTS: 25 diagnosed with PFPS and 25 asymptomatic control was recruited for study. EMG activity of VMO and VL was recorded by surface electrodes.EMG data was analyzed in three activities for both groups, ISOMETRIC, CONCENTRIC and ECCENTRIC contractions. Outcome measure was EMG MUAP amplitude.

Results: Results showed that VMO/VL ratio is lower in PFPS subjects.

Conclusion: There was significant difference in VMO/VL ratio in both groups.


Keywords

EMG, VMO, VL
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  • A Comparative Study to Analyse the Prevalance of VMO/VL Muscle Insufficiency in Patellofemoral Pain Syndrome Patients and Healthy Individuals - An Emg Based Study

Abstract Views: 473  |  PDF Views: 0

Authors

Camy A. Bhagat
Shree B. G. Patel, College of Physiotherapy, Anand, India
Paras A. Bhura
MPT(Musculoskeletal Conditions) Unique Care Physiotherapy Center, Baroda, India

Abstract


Background: PFPS describes anterior and retro patellar knee pain in the absence of other pathology. PFPS is one of the most common disorders of the knee accounts for 25% of knee injuries in sports medicine clinics. Prevalence rate is 20% in USA students and morbidity is directly related to activity of patients. EMG studies of normal subject have revealed that VMO /VL ratio is about 1:1 (power CM et al)

Objective: To study the VMO/VL ratio during ECCENTRIC, CONCENTRIC, ISOMETRIC contractions in PFPS patients and control groups.

Materials&Method: SUBJECTS: 25 diagnosed with PFPS and 25 asymptomatic control was recruited for study. EMG activity of VMO and VL was recorded by surface electrodes.EMG data was analyzed in three activities for both groups, ISOMETRIC, CONCENTRIC and ECCENTRIC contractions. Outcome measure was EMG MUAP amplitude.

Results: Results showed that VMO/VL ratio is lower in PFPS subjects.

Conclusion: There was significant difference in VMO/VL ratio in both groups.


Keywords


EMG, VMO, VL