Measuring humeral head translation using fluoroscopy: a validation study

Journal of Biomechanics
Jun G San Juan, Andrew R Karduna

Abstract

Numerous techniques have been employed to monitor humeral head translation due to its involvement with several shoulder pathologies. However, most of the techniques were not validated. The objective of this study is to compare the accuracy of manual digitization and contour registration in measuring superior translation of the humeral head. Eight pairs of cadaver scapulae and humerii bones were harvested for this study. Each scapula and humerus was secured in a customized jig that allowed for control of humeral head translations and a vise that permitted rotations of the scapula about three axes. Fluoroscopy was used to take images of the shoulder bones. Scapular orientation was manipulated in different positions while the humerus was at 90 degrees of humeral elevation in the scapular plane. Humeral head translation was measured using the two methods and was compared to the known translation. Additionally, accuracy of the contour registration method to measure 2-D scapular rotations was assessed. The range for the root mean square (RMS) error for manual digitization method was 0.27 mm-0.43 mm and the contour registration method had a RMS error ranging from 0.18 mm-0.40 mm. In addition, the RMS error for the scapular angle rotat...Continue Reading

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Citations

Jul 19, 2014·Iranian Journal of Radiology : a Quarterly Journal Published by the Iranian Radiological Society·Cyrus Taghizadeh DelkhoushHamid Haghani
Oct 14, 2014·Journal of Biomechanics·Andrea CereattiClaudio Rosso
Dec 26, 2015·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Giovanni Di GiacomoNicola de Gasperis
Aug 29, 2012·Journal of Applied Biomechanics·Jun G San JuanAndrew R Karduna
Jan 24, 2021·Journal of Applied Biomechanics·Meena MakhijaVandana Phadke

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