Incidence of and risk factors for femoral fractures in the gap between hip and knee implants

International Orthopaedics
José Antonio Valle CruzLuis López-Durán

Abstract

The purpose of this study was to analyse the incidence of interprosthetic femoral fractures and describe risk factors for them. Between 2009 and 2015, we selected patients who were carrying two implants (hip and knee) in the same femur. We collected demographic and clinical data and performed a radiological evaluation to analyse the gap between implants-the femoral canal area and total femoral area-in the axial plane. We defined interprosthetic fracture as that corresponding to a Vancouver type C fracture and types 1 and 2 according to the Su classification. We studied 68 patients who had total knee arthroplasty (TKA), and 44 patients who had total hip arthroplasty (THA); 24 patients an intramedullary nail. We found six interprosthetic fractures (8.8 %), all in patients with a non-cemented THA. There was a tendency towards statistical difference (p = 0.08). Patients with an additional implant at the proximal femur were statistically less likely to have an interprosthetic fracture (p = 0.04). In radiological results, we found more interprosthetic fractures in patients who had an increased femoral canal area in the axial plane just distal to the tip of the hip implant. Identifying risk factors for this specific type of fracture m...Continue Reading

References

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Citations

Dec 15, 2015·Injury·Theodoros H Tosounidis, Peter V Giannoudis
Mar 3, 2017·The Journal of the American Academy of Orthopaedic Surgeons·John A Scolaro, Ran Schwarzkopf
Aug 5, 2017·Orthopedics·Nicholas M Romeo, Reza Firoozabadi
May 18, 2019·International Orthopaedics·Umberto CottinoRoberto Rossi
Jul 22, 2020·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·José Vicente Andrés PeiróVicente Molero García
Aug 25, 2021·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Musa GüngörürlerHasan Havıtçıoğlu
Oct 20, 2021·Orthopaedics & Traumatology, Surgery & Research : OTSR·François BonnometMatthieu Ehlinger

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