• Injury · Aug 2024

    Observational Study

    Low risk of early conversion to surgery in non-surgically treated proximal humeral fractures - An observational cohort study of 31,761 fractures from the Swedish Fracture Register.

    • Carl Bergdahl, Olof Wolf, Emilia Möller Rydberg, Michael Möller, and David Wennergren.
    • Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden; Department of Orthopaedics, Sahlgrenska University Hospital, Gothenburg/Mölndal, Sweden. Electronic address: carl.bergdahl@vgregion.se.
    • Injury. 2024 Aug 1; 55 (8): 111679111679.

    IntroductionThe majority of all proximal humeral fractures (PHFs) are treated non-surgically. Due to the risk of early secondary fracture displacement patients with non-surgically treated PHFs routinely undergo serial clinical and radiological evaluations. However, the value of these routine follow-up visits is unclear. This study aimed to examine the rate of early conversion to surgery in non-surgically treated PHFs. Moreover, the associations between patient and fracture characteristics and the risk of conversion to surgery were explored in order to assess the need for routine follow-ups.MethodsData on all patients aged ≥18 years with a non-surgically treated PHF registered between 2013 and 2021 were extracted from the Swedish Fracture Register. Early change of treatment from non-surgical to surgical is an optional treatment modality in the SFR. The rate of early conversion to surgery within 60 days from injury was analyzed in relation to age and sex of the patient, energy level at injury and fracture morphology according to the AO/OTA classification.ResultsA total of 31,761 primarily non-surgically treated PHFs (mean age 70 years: 76 % female) were included in the study. The overall rate of early conversion to surgery was 3.7 %. Younger age and increasing fracture severity were associated with a higher conversion rate to surgery. Patients ≥80 years and those with the three most common fracture types (A1, A2, and B1) had <2 % early conversion to surgery. In contrast, patients with C-type fractures, unstable/displaced fractures (A3, B2, and C2), or fracture dislocations (A1.3, B3, and C3) had a substantially higher risk (5.0-20 %) of early conversion.ConclusionThe overall risk of early conversion to surgery in non-surgically treated PHFs is low and can be further predicted based on patient age and fracture morphology. These results could have implications regarding which patients are in need of routine follow-ups.Level Of EvidenceLevel II; Retrospective design; Prognosis study.Copyright © 2024. Published by Elsevier Ltd.

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