The effect of cementing technique on structural fixation of pegged glenoid components in total shoulder arthroplasty

Nyffeler, Richard W; Meyer, Dominik; Sheikh, Ralph; Koller, Bruno J; Gerber, Christian (2006). The effect of cementing technique on structural fixation of pegged glenoid components in total shoulder arthroplasty. Journal of shoulder and elbow surgery, 15(1), pp. 106-11. New York, N.Y.: Elsevier 10.1016/j.jse.2005.05.002

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Although loosening of cemented glenoid components is one of the major complications of total shoulder arthroplasty, there is little information about factors affecting initial fixation of these components in the scapular neck. This study was performed to assess the characteristics of structural fixation of pegged glenoid components, if inserted with two different recommended cementing techniques. Six fresh-frozen shoulder specimens and two types of glenoid components were used. The glenoids were prepared according to the instructions and with the instrumentation of the manufacturer. In 3 specimens, the bone cement was inserted into the peg receiving holes (n = 12) and applied to the back surface of the glenoid component with a syringe. In the other 3 specimens, the cement was inserted into the holes (n = 15) by use of pure finger pressure: no cement was applied on the backside of the component. Micro-computed tomography scans with a resolution of 36 microm showed an intact cement mantle around all 12 pegs (100%) when a syringe was used. An incomplete cement plug was found in 7 of 15 pegs (47%) when the finger-pressure technique was used. Cement penetration into the cancellous bone was deeper in osteopenic bone. Application of bone cement on the backside of the glenoid prosthesis improved seating by filling out small spaces between bone and polyethylene resulting from irregularities after reaming or local cement extrusion from a drill hole. The fixation of a pegged glenoid component is better if the holes are filled with cement under pressure by use of a syringe and if cement is applied to the back of the glenoid component than if cement is inserted with pure finger pressure and no cement is applied to the back surface of the component.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Orthopaedic, Plastic and Hand Surgery (DOPH) > Clinic of Orthopaedic Surgery
UniBE Contributor:	Nyffeler, Richard Walter
ISSN:	1058-2746
ISBN:	16414478
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:51
Last Modified:	05 Dec 2022 14:15
Publisher DOI:	10.1016/j.jse.2005.05.002
PubMed ID:	16414478
Web of Science ID:	000234868300019
URI:	https://boris.unibe.ch/id/eprint/21501 (FactScience: 7260)