A retrospective cohort analysis of failure and potential causes after osteosynthesis of femoral fractures with VA-LCP Condylar plate 4.5/5.0, Depuy Synthes

Nikolaj Hjort Schmidt*, Lasse Birkelund, Jesper Ougaard Schønnemann

*Kontaktforfatter

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Abstract

Background: Since 2014, the VA-LCP Condylar Plate 4.5/5.0, Depuy Synthes, has been the preferred implant for these injuries at our institution, however, speculations have been made whether it is more prone to failure compared to other implants. Thus, the aim of the study was to describe the cohort treated with the VA-LCP Condylar Plate 4.5/5.0, Depuy Synthes, at our department from 2014 to 2020, including the number of failures. Secondary, whether specific outcome measures were significantly overrepresented in the failure group. Methods: Patients were identified through the hospital database, and demographic data was extracted from patient files. X-rays were evaluated for injury type, osteosynthesis characteristics, and whether the construct failed during follow-up. Thanks to the national patient record database a minimum of patients was lost to follow-up. Results: After exclusion 159 patients (165 osteosyntheses, descriptive part) and 108 patients (112 osteosyntheses, subgroup analysis) were eligible for inclusion. The VA-LCP Condylar Plate 4.5/5.0, Depuy Synthes, was used for most AO-type fractures and inserted as both neutralization, buttress, and bridging plates. Overall failure was seen in 8 % of osteosyntheses. Significantly more failures were seen in patients with increased Body Mass Index (BMI) (24 vs. 32, p = 0,046) and those treated for a periprosthetic fractures (41 % vs. 89 %, p = 0,005). We did not see an association between failure and plate length, bridge span, screw density or the degree of medial support. Conclusion: The VA-LCP Condylar Plate 4.5/5.0, Depuy Synthes is a versatile plate with failure rates comparable to previously reported studies. This study confirmed that elevated BMI may be a risk factor for failure, while other previously reported risk factors were not associated with failure in this study.

OriginalsprogEngelsk
TidsskriftJournal of Orthopaedics
Vol/bind55
Sider (fra-til)69-73
ISSN0972-978X
DOI
StatusUdgivet - sep. 2024

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