Nabil Serrano et al. CT-based and morphological comparison of glenoid inclination and version angles and mineralisation distribution in human body donors BMC Musculoskeletal Disorders.
October 5, 2021
How Analyze was Used
“CT-OAM analyses were performed as established for healthy shoulders. In brief, DICOM data sets were analysed using an image analysis system (ANALYZE, version 7.4). The subchondral bone plate was isolated by segmentation of CT scans. By means of maximum intensity projection, for each pixel until a depth of 3 mm, values with the highest density were projected onto the surface. Threshold values were selected according to previous studies to be < 200 to > 1200 HU. To display the mineralisation distribution, data were false colour-encoded and superimposed on the identical 3D-reconstructed joint as described . Areas of highest mineralisation distribution were identified as “central”, “cranial”, “caudal”, “ventral” or “dorsal” by quadrants of the articular surfaces similar to previous work. The mineralisation distribution patterns (Fig. 4) were compared with those of previous studies from our group in healthy shoulders for typical criteria of physiological distributions, i.e., predominantly central and anterior > posterior as described. Mineralisation patterns differing from these physiological patterns were classified as “different” or “non-physiological”, respectively.”
Shoulder joint, 3D-CT, CT-OAM, Inclination angle, Glenoid anteversion, Glenoid retroversion, Bone mineralization
University of Zurich, Zurich, Switzerland