Glenoid cement mantle characterization using micro-computed tomography of three cement application techniques.

Autor: Flint WW; Department of Orthopaedics and Rehabilitation, Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA, USA., Lewis GS; Department of Orthopaedics and Rehabilitation, Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA, USA., Wee HB; Department of Orthopaedics and Rehabilitation, Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA, USA., Bryce BJ; Department of Emergency Medicine, Pinnacle Health, Harrisburg, PA, USA., Armstrong AD; Department of Orthopaedics and Rehabilitation, Milton S. Hershey Medical Center, Penn State College of Medicine, Hershey, PA, USA. Electronic address: aarmstrong@hmc.psu.edu.
Jazyk: angličtina
Zdroj: Journal of shoulder and elbow surgery [J Shoulder Elbow Surg] 2016 Apr; Vol. 25 (4), pp. 572-80. Date of Electronic Publication: 2015 Nov 11.
DOI: 10.1016/j.jse.2015.08.031
Abstrakt: Background: Numerous studies have documented the concern for progressive radiolucent lines, signifying debonding and subsequent aseptic loosening of the glenoid component. In this study, we compared 3 cementation methods to secure a central peg in 15 cadaveric glenoids.
Methods: Cement application techniques consisted of (1) compression of multiple applications of cement using manual pressure over gauze with an Adson clamp, (2) compression of multiple applications of cement using a pressurizer device, and (3) no compression of a single application of cement. Each glenoid was then imaged with high-resolution micro-computed tomography and further processed by creating 3-dimensional computerized models of implant, bone, and cement geometry. Cement morphology characteristics were then analyzed in each of the models.
Results: There were no significant differences detected between the 2 types of compression techniques; however, there was a significant difference between compression methods and use of no compression at all. All morphologic characteristics of a larger cement mantle were significantly correlated with greater cortical contact.
Conclusions: We demonstrate that compression techniques create a larger cement mantle. Increased size of the cement mantle is associated with increased contact with cortical bone at the glenoid vault. This method for characterizing the cement mantle by micro-computed tomography scanning techniques and 3-dimensional analysis may also be useful in future finite element analysis studies.
(Copyright © 2016 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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