Very Early Migration of a Calcar-guided Short Stem: a Randomized Study of Early Mobilization and the Influence of a Calcium Phosphate Coating with 60 Patients

Overview

Journal Sci Rep

Specialty Science

Date 2024 Feb 15

PMID 38360840

Authors

Stefan Budde

Alexander Derksen

Christof Hurschler

Peter Fennema

Henning Windhagen

Jochen Plagge

Thilo Florkemeier

Gabriela von Lewinski

Yvonne Noll

Michael Schwarze

Affiliations

Soon will be listed here.

Abstract

This study analyzed the migration of a calcar-guided short stem to determine the course of very early migration, as well as evaluated the effect of an additional calcium phosphate (CP) coating on a titanium plasma spray (TPS) coating, which has not been analyzed previously. Sixty patients were enrolled in this study and were treated with the A2 calcar-guided short stem. The implant coating was randomized with either the TPS or an additional CP coating, and radiostereometric analysis was performed with the baseline measurement before initial weight-bearing, along with follow-up examinations at 1 week, 6 weeks, 3 months, and 6 months. Implant migrations were 0.27 mm (standard deviation [SD], 0.13 mm) and 0.74 mm (SD, 1.11 mm) at 1 week and 6 months post-surgery, respectively, and 65% and 87% of the implants reached their final position 1 week and 6 weeks after surgery, respectively. After 6 weeks, 3 months, and 6 months, a significant increase was noted in the migration of the CP coating group vs. that of the TPS coating group. Upon the final observation at 6 months, the groups displayed on average a 0.74-mm migration. Most of the analyzed implants ceased migration within the first week post-surgery, but the CP coating demonstrated a higher and more prolonged migration compared to the TPS coating.

Citing Articles

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