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2002, Number 1

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Rev Mex Med Fis Rehab 2002; 14 (1)

Determination of the quadriceps muscle equilibrium in patellofemoral osteoarthrosis

Torres VC, Coronado ZR, Diez GMP, Escobar CRE, Chávez AD, León HSR

Language: Spanish
References: 15
Page: 15-19
PDF size: 77.95 Kb.


ABSTRACT

Background: Patellofemoral pain syndrome is one of the main causes of general consultation and the patellofemoral osteoarthrosis is a degenerative process frequently associated to this painful syndrome. Method: This process has been associated to an imbalance in the extensor mechanism, specially between the vastus lateralis and vastus medialis. Fifteen patients were checked with patellofemoral osteoarthrosis and 15 healthy subjects, through surface electromyography of the vastus lateralis and vastus medialis in concentric, eccentric and isometric contractions in bilateral way, evaluating the interference pattern and analyzing potency, frequency average and width. These values were compared with the Student’s t test through the SPSS 10 program for Windows. Results: Significative differences were found between vastus lateralis and vastus medialis, in both groups, with major parameters for vastus lateralis, specially in patients with osteoarthrosis, and few difference in healthy subjects. Conclusions: Muscular imbalance were determined with higher vastus lateralis activity than vastus medialis actitvity in patients with patellofemoral osteoarthrosis, so that, the electromyography is a faster, practical and without pain procedure.


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