Proximal femur geometry: a major predictor of proximal femur fracture subtypes

Data de publicação: Data Ahead of Print:

Autores da FMUP

  • João Manuel Costa Ferreira Torres

    Autor

Participantes de fora da FMUP

  • Senra, AR
  • Carvalho, DR
  • da Silva, MR
  • Sousa, AN

Unidades de investigação

Abstract

Introduction: Proximal femur geometry (PFG) represents an important risk factor for the occurrence of hip fractures. There are currently few studies regarding the correlation between PFG and the occurrence of a specific fracture subtype, and those that exist have small cohorts and present with different methodologies and contradictory results. Therefore, there is no consensus in the literature regarding this topic. The present study aimed to establish the contribution of the PFG in the occurrence of different subtypes of proximal femur fractures (PFF): intertrochanteric, neck and subtrochanteric. Methods: Analysis of 1022 plain anteroposterior pelvic radiographs of patients consecutively admitted to the emergency room of a Level 1 Trauma Centre between 2013 and 2019 after low energy trauma who presented with PFF and underwent surgical treatment. Patients were analysed considering age, gender and subtype of PFF (intertrochanteric, neck or subtrochanteric). Radiological parameters including cervicodiaphyseal angle (CDA), horizontal offset (HO), femoral neck width (FNW), femoral neck length (FNL), great trochanter-pubic symphysis distance (GTPSD), acetabular teardrop distance (ATD) and width of the intertrochanteric region (WIR) were measured and compared between the different subtypes of fractures (7154 measurements). Statistical analysis was conducted recurring to absolute measurements and measurements ratios. The correlation was assessed using t-test. Results: There were statistically significant differences in proximal femur geometry between the different subtypes of fractures. Patients presenting with femoral neck fractures had greater CDA (132.5 +/- 6.9 vs. 130.0 +/- 7.3; p < 0.001) and lower HO (45.8 +/- 7.4 vs. 49.0 +/- 8.0; p < 0.001), HO/ATD (0.34 +/- 0.068 vs. 0.37 +/- 0.072; p < 0.001) and HO/GTPSD (0.26 +/- 0.049 vs. 0.28 +/- 0.039; p < 0.001) than patients with intertrochanteric/subtrochanteric fractures. Conclusions: PFG represents an important contributor to the occurrence of different fracture subtypes. Femoral neck fractures are associated with greater CDA and lower HO, HO/ATD and HO/GTPSD when compared to intertrochanteric or subtrochanteric fractures.

Dados da publicação

ISSN/ISSNe:
1724-6067, 1120-7000

HIP International  Wichtig Publishing Srl

Tipo:
Article
Páginas:
1100-1106
Link para outro recurso:
www.scopus.com

Citações Recebidas na Web of Science: 1

Citações Recebidas na Scopus: 2

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Keywords

  • Femoral neck fractures; hip fractures; hip geometry; intertrochanteric fractures; subtrochanteric fractures; trochanteric fractures

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