Hybrid solution combining osteosynthesis and endoprosthesis for double column acetabular fractures in the elderly provide more stability with finite element model

András Kocsis, K. Váradi, Gábor Szalai, Tamás Kovács, Tamás Bodzay

Research output: Contribution to journalArticle

Abstract

Objectives: This study aims to compare mechanical stability of osteosynthesis (plate and screw fixation) alone versus the same method supplemented with hip arthroplasty (hybrid solution) for double column fractures in elderly. Patients and methods: Mechanical investigations were performed on an advanced finite element pelvis model developed for double column fractures. The following simulated implant combinations were analyzed: modular acetabular basket with a ring with polyaxial screws and U-plate; plates with polyaxial screws placed on the medialhorizontal (linea terminalis) and quadrilateral bone surfaces; modular acetabular cup with U-plates; and polyaxial screws in sizes optimized based on a finite element model (FEM). Using the models, the possible shifts in peak load positions arising in different movement patterns caused by load and tension and implant deformation were measured. Results: Hybrid systems resulted in minimal deformation of the implants already available on the market. We observed less possible shifts and greater stability in the acetabular fracture zones, compared to conventional osteosynthesis alone. Optimization with available and compatible implant sizes led to a further significant increase in stability. Conclusion: Hybrid method combining osteosynthesis and prosthesis implantation provide more stability in biomechanical models in the treatment of double column fractures in elderly.

Original languageEnglish
Pages (from-to)106-111
Number of pages6
JournalEklem Hastaliklari ve Cerrahisi
Volume30
Issue number2
DOIs
Publication statusPublished - Jan 1 2019

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Prosthesis Implantation
Pelvis
Arthroplasty
Hip
Bone and Bones
Therapeutics

Keywords

  • Acetabular fracture
  • Acetabulum
  • Finite element model
  • Pelvic trauma
  • Plate osteosynthesis
  • Total hip replacement

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine
  • Rehabilitation

Cite this

Hybrid solution combining osteosynthesis and endoprosthesis for double column acetabular fractures in the elderly provide more stability with finite element model. / Kocsis, András; Váradi, K.; Szalai, Gábor; Kovács, Tamás; Bodzay, Tamás.

In: Eklem Hastaliklari ve Cerrahisi, Vol. 30, No. 2, 01.01.2019, p. 106-111.

Research output: Contribution to journalArticle

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