Strategies for fixation of periprosthetic fragility fractures of the neck of femur below a well-functioning hip resurfacing arthroplasty: A case-series

Mishra, Arya; Kerr, Nicholas; Doshi, Arpan R; Quah, Conal; Lewis, James H.

doi:10.1016/j.jcot.2023.102169

Journal of Clinical Orthopaedics and Trauma

2023

DOI: 10.1016/j.jcot.2023.102169

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Strategies for fixation of periprosthetic fragility fractures of the neck of femur below a well-functioning hip resurfacing arthroplasty: A case-series

Arya Mishra¹,

Nicholas Kerr

Arpan R Doshi

et al.

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2024

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Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study

Perez Neto,

Muzzi,

Santos

et al. 2024

Vet Comp Orthop Traumatol

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Objective The objective of this study was to assess the stability of the femoral component of a hip resurfacing arthroplasty prosthesis in canine cadaveric bone using a biomechanical test. Study Design Twenty adult dog cadavers were utilized, from which both femoral bones were extracted and preserved for experimentation. For each pair of femurs from the same animal, one femur underwent implantation of the hip resurfacing arthroplasty prosthesis, while the contralateral femur remained intact. All femoral specimens underwent flexo-compression biomechanical testing, with variables including maximum load (ML), load at collapse (LC), displacement at maximum load (DML), displacement at collapse (DC), and stiffness (k) being analysed. Subsequent to the biomechanical evaluation, the femoral specimens were radiographed to assess failure behaviour. Results The prosthesis group showed a reduction of 22% (p ≤ 0.050) for the ML variable and 27% (p ≤ 0.05) for LC values. The prosthetic group supported a mean ML equivalent to six times the body weight of the animals whose bones were tested. No significant disparities were detected between the groups for the other analysed variables (DML, DC, and k). Similar failure patterns, such as fractures in the femoral neck region, were observed in specimens from both groups. Conclusion The hip resurfacing arthroplasty prosthesis demonstrated biomechanical performance with no differences in DML, DC, and k but showed inferior performance in ML and LC when compared with intact femurs in the ex vivo setting.

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Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study

Perez Neto,

Muzzi,

Santos

et al. 2024

Vet Comp Orthop Traumatol

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show abstract

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Strategies for fixation of periprosthetic fragility fractures of the neck of femur below a well-functioning hip resurfacing arthroplasty: A case-series

Cited by 1 publication

References 46 publications

Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study

Biomechanical Evaluation of a Femoral Implant for Hip Resurfacing Arthroplasty in Dogs: An Ex Vivo Study

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