• Tomas Da Silva, Franziska Rummel, Christian Knop, and Tobias Merkle.
• Department of Trauma Surgery and Orthopedics, Klinikum Stuttgart - Katharinenhospital, Kriegsbergstraße 60, 70174, Stuttgart, Germany. t.dasilva@klinikum-stuttgart.de.
• Eur J Orthop Surg Tr. 2021 Oct 1; 31 (7): 1463-1469.

BackgroundIn order to minimize the risk of damaging the radial nerve while using a long PHILOS plate for proximal humerus fractures, recent studies have proposed twisting the plate in a helical form. This implies a modified surgical approach being yet unclear whether it leads to different middle to long-term shoulder function. This study compares the one-year shoulder functional outcomes of both techniques (helical vs. control).MethodsIn this retrospective comparative study, we analyzed 30 patients that fit the inclusion criteria, being 14 treated with a helical plate and 16 with a conventional straight long PHILOS plate. The primary endpoint was the normalized constant score after a minimum follow up of one year.ResultsBoth groups had a good one-year shoulder function, and no significant difference between the normalized constant scores was seen. There was no significant difference in the surgical complications as well.ConclusionOpting for a helical long PHILOS plate in order to avoid radial nerve damage provided a safe treatment with similarly good one-year shoulder function compared to straight PHILOS plates.Level Of EvidenceLevel 3, Retrospective Cohort Study.© 2021. The Author(s), under exclusive licence to Springer-Verlag France SAS part of Springer Nature.

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