Analysis of patellar stabilizers muscles and patellar kinematics in anterior knee pain subjects

Autor(es)

Felicio, Lilian Ramiro ^[1] ; Baffa, Augusto Do Prado ^[2] ; Liporacci, Rogerio Ferreira ^[3] ; Saad, Marcelo Camargo ^[1] ; De Oliveira, Anamaria Siriani ^[4] ; Bevilaqua-Grossi, Debora ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, USP, Preto Sch Med, Traumatol & Rehabil Program, Ribeirao Preto - Brazil

^[2] Univ Sao Paulo, USP, Ribeirao Preto Sch Med, BR-05508 Sao Paulo - Brazil

^[3] Univ Sao Paulo, Dept Clin Med, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Ribeirao Preto Sch Med, Dept Biomech Med & Rehabil Locomotor Apparat, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY; v. 21, n. 1, p. 148-153, FEB 2011.
• Citações Web of Science: 8

Resumo

Patella stabilizer muscle response and patellar kinematics were evaluated in 19 women with anterior knee pain (AKP) and 20 healthy women during maximum voluntary isometric contraction (MVIC) with the knee positioned at 15 degrees, 30 degrees and 45 degrees flexion during open (OKC) and closed (CKC) kinetic chain exercises. Patellar kinematics was evaluated through patellar tilt and displacement, and the electrical activity of patellar stabilizers through the root mean square normalized during MVIC and OKC with the knee at 90 degrees flexion. Data revealed that the vastus medialis oblique muscle (VMO) was more active in the control group compared to the AKP group during OKC exercises with the knee at 45 degrees flexion. However, no difference in the patellar kinematics was observed between these groups; nevertheless, the correlation between these parameters also showed, with the knee at 45 degrees flexion, that lateral patellar tilt increase was associated with a reduction in the activity of lateral patellar stabilizers in the control group and with an increase in the VMO activity in the AKP group. In conclusion, electrical activity is an important factor in evaluating AKP and in AKP treatment evolution. (C) 2010 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 04/14097-7 - Avaliação morfológica e funcional do joelho em indivíduos com disfunção femoropatelar
• Beneficiário: Débora Bevilaqua Grossi
• Modalidade de apoio: Auxílio à Pesquisa - Regular