Skip to ContentSkip to Navigation
About usNews and EventsNews articles

Development of a non-fusion scoliosis correction device

23 November 2010

Adolescent idiopathic scoliosis is characterised by an S- or C-shaped lateral deviation of the spine, an axial rotation of the vertebrae, and a flattening of the sagittal curvature.
Present surgical therapy brings several disadvantages like fusion of the involved vertebrae and the necessity to wait with surgery until the end of the growth of the patient.
Therefore, a non-fusion scoliosis correction device is being developed in which the disadvantages of present systems are reduced. Furthermore, this device should correct the deformity in all three anatomical planes and should allow growth of the patient.

The focus of this thesis is on providing boundary conditions for adequate testing and application of the non-fusion scoliosis correction device rather than on testing of the device itself. For optimization of the design of the implant, a finite element model of the complete spine is being made and for the validation of this model, extensive in-vitro tests were performed and described in this thesis.

Furthermore, the implant will be tested in a porcine model and therefore part 1 of this thesis aims to answer to question whether the geometrical and biomechanical characteristics of the porcine spine are representative for the human spine.

Part 2 of this thesis focuses on the timing of the surgery. This is highly important and mainly dependent on the timing of the pubertal growth spurt of the adolescent patient. Therefore, part 2 of this thesis presents several methods for prediction of the timing and magnitude of the peak growth velocity in the individual child.

Last modified:18 January 2018 09.35 a.m.

More news

  • 23 April 2019

    From paperclip to patent

    How is it possible that an albatross doesn’t crash and die when it lands? And how come its large wings don’t break due to air resistance? That is what you would expect, according to the laws of aerodynamics. However, Professor Eize Stamhuis has discovered...

  • 16 April 2019

    A thorough characterization of structural variants in human genomes

    Human genomes vary quite a bit from individual to individual. These differences include single nucleotide changes, or “spelling mistakes” in the DNA sequence, but even more variation comes from structural variants, which include additions, deletions...

  • 02 April 2019

    ‘Sense of loss drives voting behaviour’

    ‘Everybody here loves that academia has returned to Friesland. We teach, carry out research and think along about solutions to problems that are relevant for Friesland,’ says Caspar van den Berg, Professor of Global and Local Governance at the UG Campus...