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Correlation Between Trochlear Groove Depth and Patellar Position During Open and Closed Kinetic Chain Exercises in Subjects With Anterior Knee Pain.
MedLine Citation:
PMID:  22084056     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The purpose of this study was to correlate the trochlear shape and patellar tilt angle and lateral patellar displacement at rest and maximal voluntary isometric contraction (MVIC) exercises during Open (OKC) and Closed Kinetic Chain (CKC) in subjects with and without anterior knee pain (AKP). Subjects were all women, 20 clinically healthy and nineteen diagnosed with AKP. All subjects were evaluated and subjected to magnetic resonance (MR) exams during OKC and CKC with the knee placed at 15, 30, and 45 degrees of flexion. The parameters evaluated were sulcus angle (SA), patellar tilt angle (PTA) and patellar displacement using bisect offset (BO). The Pearson's r coefficient was used, with p< 0.05. Our results revealed in AKP group during CKC and OKC at 15 degrees that the increase in the SA is associated with a tilt increase and patellar lateral displacement. Comparing SA, PTA and BO values between MVIC in OKC and CKC in the AKP group, it was observed that PTA increased in OKC only with the knee flexed at 30 degrees. Based on our results we conclude that reduced trochlear depth is correlated to increased lateral patellar tilt and displacement during OKC and CKC at 15 degrees flexion in people with AKP. On the other hand, 30 degrees of knee flexion in CKC is more recommended in rehabilitation protocols because the patella was more stable than in other positions.
Authors:
Lílian Ramiro Felicio; Marcelo Camargo Saad; Rogério Ferreira Liporaci; Augusto do Prado Baffa; Antônio Carlos Dos Santos; Débora Bevilaqua-Grossi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-11
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  -     ISSN:  1065-8483     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Graduate student of the Orthopedics, Traumatology and Rehabilitation program, Ribeirão Preto School of Medicine, University of São Paulo - USP, Brazil.
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