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Algorithm and validation of a computer method for quantifying attachment locus of glenohumeral ligament

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  • Hippolite Amadi
  • Anthony Bull

Abstract

The aim of this work is to validate an algorithm that quantifies the locus of glenohumeral ligament (GHL) attachments on glenohumeral joint (GHJ) bones.A computed tomography scan of a GHJ was segmented to reconstruct the humerus, scapula, anatomical neck (AN) and glenoid rim (GR) into 3D meshes of interconnecting nodal vectors. These were applied to construct a ‘clock face’ coordinate system in which 3 o'clock points anteriorly.Based on the assigned clock face coordinate frame and the fitted plane, the error between the fitted plane and the actual bony node was quantified through manual data extraction. This was tested on 50 specimens.Mean algorithm quantification errors for GHL attachments were 4.8 (SD 2.2 mm) and 4.5 mm (1.7 mm) for the humerus and glenoid, respectively. Further studies would apply this to investigate GHL length changes during function and may suggest how these structures should be handled during surgical repairs.

Suggested Citation

  • Hippolite Amadi & Anthony Bull, 2011. "Algorithm and validation of a computer method for quantifying attachment locus of glenohumeral ligament," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 14(12), pages 1059-1063.
    • Handle: RePEc:taf:gcmbxx:v:14:y:2011:i:12:p:1059-1063
    DOI: 10.1080/10255842.2010.506436
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    1. Hippolite O. Amadi & Roger J. Emery & Andrew Wallace & Anthony Bull, 2014. "Specificity of clinical examinations for testing glenohumeral ligament integrity: a computational study," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 17(9), pages 933-943, July.

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