Acetabular cartilage defects cause altered hip and knee joint coordination variability during gait

Michael A. Samaan, Hsiang Ling Teng, Deepak Kumar, Sonia Lee, Thomas M. Link, Sharmila Majumdar, Richard B. Souza

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Background Patients with acetabular cartilage defects reported increased pain and disability compared to those without acetabular cartilage defects. The specific effects of acetabular cartilage defects on lower extremity coordination patterns are unclear. The purpose of this study was to determine hip and knee joint coordination variability during gait in those with and without acetabular cartilage defects. Methods A combined approach, consisting of a semi-quantitative MRI-based quantification method and vector coding, was used to assess hip and knee joint coordination variability during gait in those with and without acetabular cartilage lesions. Findings The coordination variability of the hip flexion-extension/knee rotation, hip abduction-adduction/knee rotation, and hip rotation/knee rotation joint couplings were reduced in the acetabular lesion group compared to the control group during loading response of the gait cycle. The lesion group demonstrated increased variability in the hip flexion-extension/knee rotation and hip abduction-adduction/knee rotation joint couplings, compared to the control group, during the terminal stance/pre-swing phase of gait. Interpretation Reduced variability during loading response in the lesion group may suggest reduced movement strategies and a possible compensation mechanism for lower extremity instability during this phase of the gait cycle. During terminal stance/pre-swing, a larger variability in the lesion group may suggest increased movement strategies and represent a compensation or pain avoidance mechanism caused by the load applied to the hip joint.

Original languageEnglish
Pages (from-to)1202-1209
Number of pages8
JournalClinical Biomechanics
Volume30
Issue number10
DOIs
StatePublished - Dec 1 2015

Bibliographical note

Funding Information:
This study was supported by NIH-NIAMS P50 AR060752. The content of this study is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Funding Information:
This study was supported by NIH-NIAMS P50 AR060752 . The content of this study is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

Publisher Copyright:
© 2015 Elsevier Ltd.

Keywords

  • Acetabular cartilage lesions
  • Gait
  • Joint coordination
  • Lower extremity
  • MRI
  • Vector coding

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine

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