BACKGROUND/HYPOTHESIS: The arthritic glenoid is typically in retroversion and restoration to neutral version is recommended. While a method for measurement of glenoid version using axial computed tomography (CT) has been reported and has been widely accepted, its accuracy and reproducibility has not been established. METHODS: In 33 patients scheduled for shoulder arthroplasty, glenoid version and maximum wear of the glenoid articular surface were measured with respect to the scapular body axis on 2-dimensional- (2D) CT slices as well as on 3-dimensional- (3D) reconstructed models of the same CT slices. RESULTS: Clinical CT scans were axially aligned with the patient's torso but were almost never perpendicular to the scapular body. The average absolute error in version measured on the 2D-CT slice passing through the tip of the coracoid was 5.1 degrees (range, 0 - 16 degrees , P < .001). On high-resolution 3D-CT reconstructions, the location of maximum wear was most commonly posterior and was missed on the clinical 2D-CT slices in 52% of cases. CONCLUSION: Error in measuring version and depth of maximum wear can substantially affect the determination of the degree of correction necessary in arthritic glenoids. Accurately measuring glenoid version and locating the direction of maximum wear requires a full 3D-CT reconstruction and analysis. Copyright 2010 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.
BACKGROUND/HYPOTHESIS: The arthritic glenoid is typically in retroversion and restoration to neutral version is recommended. While a method for measurement of glenoid version using axial computed tomography (CT) has been reported and has been widely accepted, its accuracy and reproducibility has not been established. METHODS: In 33 patients scheduled for shoulder arthroplasty, glenoid version and maximum wear of the glenoid articular surface were measured with respect to the scapular body axis on 2-dimensional- (2D) CT slices as well as on 3-dimensional- (3D) reconstructed models of the same CT slices. RESULTS: Clinical CT scans were axially aligned with the patient's torso but were almost never perpendicular to the scapular body. The average absolute error in version measured on the 2D-CT slice passing through the tip of the coracoid was 5.1 degrees (range, 0 - 16 degrees , P < .001). On high-resolution 3D-CT reconstructions, the location of maximum wear was most commonly posterior and was missed on the clinical 2D-CT slices in 52% of cases. CONCLUSION: Error in measuring version and depth of maximum wear can substantially affect the determination of the degree of correction necessary in arthritic glenoids. Accurately measuring glenoid version and locating the direction of maximum wear requires a full 3D-CT reconstruction and analysis. Copyright 2010 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Mosby, Inc. All rights reserved.
Authors: Benjamin Bockmann; Sonja Soschynski; Philipp Lechler; Steffen Ruchholtz; Florian Debus; Tim Schwarting; Michael Frink Journal: Int Orthop Date: 2015-07-07 Impact factor: 3.075
Authors: Hristo Ivanov Piponov; David Savin; Neal Shah; Domenic Esposito; Brian Schwartz; Vincent Moretti; Benjamin Goldberg Journal: Int Orthop Date: 2016-04-22 Impact factor: 3.075
Authors: Constantina Moraiti; Shahnaz Klouche; Jean David Werthel; Thomas Bauer; Philippe Hardy Journal: Int Orthop Date: 2016-10-04 Impact factor: 3.075
Authors: Anna Maria Kubicka; Jakub Stefaniak; Przemysław Lubiatowski; Jan Długosz; Marcin Dzianach; Marcin Redman; Janusz Piontek; Leszek Romanowski Journal: Int Orthop Date: 2016-08-05 Impact factor: 3.075
Authors: Daniel Rios; Kyle S Jansson; Frank Martetschläger; Robert E Boykin; Peter J Millett; Coen A Wijdicks Journal: Knee Surg Sports Traumatol Arthrosc Date: 2013-01-24 Impact factor: 4.342