Article: article from journal or magazin.
Measurements of three-dimensional glenoid erosion when planning the prosthetic replacement of osteoarthritic shoulders.
Bone and Joint Journal
Publication types: Journal Article ; Research Support, Non-U.S. Gov' tPublication Status: ppublish
The three-dimensional (3D) correction of glenoid erosion is critical to the long-term success of total shoulder replacement (TSR). In order to characterise the 3D morphology of eroded glenoid surfaces, we looked for a set of morphological parameters useful for TSR planning. We defined a scapular coordinates system based on non-eroded bony landmarks. The maximum glenoid version was measured and specified in 3D by its orientation angle. Medialisation was considered relative to the spino-glenoid notch. We analysed regular CT scans of 19 normal (N) and 86 osteoarthritic (OA) scapulae. When the maximum version of OA shoulders was higher than 10°, the orientation was not only posterior, but extended in postero-superior (35%), postero-inferior (6%) and anterior sectors (4%). The medialisation of the glenoid was higher in OA than normal shoulders. The orientation angle of maximum version appeared as a critical parameter to specify the glenoid shape in 3D. It will be very useful in planning the best position for the glenoid in TSR.
Adult, Aged, Arthroplasty, Replacement/methods, Female, Glenoid Cavity/pathology, Glenoid Cavity/radiography, Humans, Imaging, Three-Dimensional/methods, Male, Middle Aged, Observer Variation, Orientation, Osteoarthritis/pathology, Osteoarthritis/radiography, Preoperative Care/methods, Reproducibility of Results, Scapula/pathology, Scapula/radiography, Shoulder Joint/pathology, Shoulder Joint/radiography, Tomography, X-Ray Computed/methods, Young Adult
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