• Injury · Dec 2017

    Hip osteoarthritis as a predictor of the fracture pattern in proximal femur fractures.

    • Ignacio Aguado-Maestro, Michalis Panteli, Manuel García-Alonso, Ignacio García-Cepeda, and Peter V Giannoudis.
    • Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Clarendon Wing, Level A, Great George Street, Leeds, UK; Traumatology and Orthopaedic Surgery Department, Hospital Universitario del Río Hortega, C Dulzaina 2, Valladolid, Spain. Electronic address: i.aguadomaestro@gmail.com.
    • Injury. 2017 Dec 1; 48 Suppl 7: S41-S46.

    IntroductionSeveral authors have suggested a correlation between the fracture patterns of proximal femur fractures and the degree of hip osteoarthritis (HOA), but the current evidence to support this are insufficient. The aim of our study was to demonstrate whether there is an association between the grade of HOA and fracture pattern observed, in patients presenting with a fragility fracture of the proximal femur.Materials And MethodsWe contacted a retrospective review of all patients presenting to our institution with fragility fractures involving the proximal femur, between March 2012 and October 2013. Pathological fractures, high-energy injuries and patients with less than one year of follow-up were excluded from further analysis. Admission radiographs and severity of HOA were assessed according to Kellgren and Lawrence scale (minimal: Grades 1-2; severe: Grades 3-4). Fractures were classified according to AO/OTA classification.ResultsA total of 1003 patients (725 females; 1003 fractures) met the inclusion criteria, having a mean age of 81.5 (46-106 years). With regards to fracture classification, 417 (41.6%) fractures were classified as extracapsular and 586 (58.4%) as intracapsular. A total of 939 (93.9%) patients presented with minimal HOA, whilst 61 (6.1%) of the patients presented with severe HOA. Of the 61 patients presenting with severe HOA, 42 patients (68.9%) sustained a 31A-interthrocanteric fracture and 19 patients (31.1%) sustained a 31B-intracapsular fracture. Regarding the patients presenting with minimal HOA (832 patients in total), 323 patients (38.8%) sustained 31A-intertrochanteric fracture and 509 patients (61.2%) sustained a 31B-intracapsular fracture. Patients presenting with severe HOA were found to have a statistically significant chance to present with an extracapsular fracture (p<0.01).ConclusionsThe degree of HOA is related to the fracture pattern in patients presenting following simple mechanical falls. More specifically, higher grades of HOA are associated with extracapsular fracture patterns, whereas lower grades of HOA are associated with intracapsular fracture patterns.Copyright © 2017 Elsevier Ltd. All rights reserved.

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