3D CT Assessment of the Relationship Between Humeral Head Alignment and Glenoid Retroversion in Glenohumeral Osteoarthritis by Vani J. Sabesan, Mark Callanan,

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Presentation transcript:

3D CT Assessment of the Relationship Between Humeral Head Alignment and Glenoid Retroversion in Glenohumeral Osteoarthritis by Vani J. Sabesan, Mark Callanan, Ari Youderian, and Joseph P. Iannotti J Bone Joint Surg Am Volume 96(8):e64 April 16, 2014 ©2014 by The Journal of Bone and Joint Surgery, Inc.

3D reconstructions of preoperative CT imaging were performed with use of image analysis software (OrthoVis; Custom Orthopaedic Solutions, Cleveland, Ohio). Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.

3D CT reconstruction of the scapula to define the plane of the glenoid with three points placed along the peripheral surface of the glenoid fossa. Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.

An appropriately sized digital sphere is selected and optimally positioned on a normal humeral head in 3D (Figs. 3-A and 3-B) and in each 2D plane (Fig. 3-C, made in the coronal plane). Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.

Preoperative humeral alignment. Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.

This graph plots the measured glenoid retroversion in degrees for each patient compared with the humeral offset in relation to the scapular plane (HSA). Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.

This graph plots the measured glenoid retroversion in degrees for each patient compared with the humeral offset in relation to the glenoid plane (HGA). Vani J. Sabesan et al. J Bone Joint Surg Am 2014;96:e64 ©2014 by The Journal of Bone and Joint Surgery, Inc.