Measurements of three-dimensional glenoid erosion when planning the prosthetic replacement of osteoarthritic shoulders

Bone and Joint Journal - Tập 96-B Số 4 - Trang 513-518 - 2014
Alexandre Terrier1, J Ston1, Xabier Larrea1, Alain Farron2
1École Polytechnique Fédéral de Lausanne, EPFL-LBO, Station 19, Lausanne, 1015, Switzerland.
2University Hospital Center, Rue#N#du Bugnon 46, 1011 Lausanne, Switzerland.

Tóm tắt

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.Cite this article: Bone Joint J 2014;96-B:513–18.

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Thông tin xuất bản

Bone and Joint Journal

Tập 96-B Số 4

513-518

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