Document Detail

Robustness and Reproducibility of a Glenoid-Centered Scapular Coordinate System Derived From Low-Dose Stereoradiography Analysis.
MedLine Citation:
PMID:  25222968     Owner:  NLM     Status:  Publisher    
A robust and reproducible scapular coordinate system is necessary to study scapulo-thoracic kinematics. The coordinate system recommended by the ISB (International Society of Biomechanics) is difficult to apply in studies using medical imaging, which mostly use a glenoid-centered coordinate system. The aim of this study was to assess the robustness of a glenoid-centered coordinate system compared to the ISB coordinate system, and to study the reproducibility of this coordinate system measure during abduction. A Monte-Carlo analysis was performed to test the robustness of the two coordinate systems. This method enabled the variability of the orientation of the coordinate system to be assessed in laboratory setting. A reproducibility study of the glenoid-centered coordinate system in the thorax reference frame was performed during abduction in the scapular plane using a low-dose stereoradiography system. We showed that the glenoid-centered coordinate system was slightly more robust than the ISB-recommended coordinate system. Most reproducible rotation was upward/downward rotation (x axis) and most reproducible translation was along the Y axis (superior-inferior translation). In conclusion, the glenoid-centered coordinate system can be used with confidence for scapular kinematics analysis. The uncertainty of the measures derived from our technique is acceptable compared to that reported in the literature. Functional quantitative analysis of the scapular-thoracic joint is possible with this method.
Xavier Ohl; Pierre Yves Lagacé; Fabien Billuart; Olivier Gagey; Wafa Skalli; Nicola Hagemeister
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-15
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  -     ISSN:  1065-8483     ISO Abbreviation:  J Appl Biomech     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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