MIRA University of Twente
Department of Biomechanical Engineering

Fixation to a Vertebra (V. Cloostermans)


Vincent Cloostermans




Scoliosis Correction Systems


Ir. M. Wessels

Ir. E.E.G. Hekman

Starting date:


V. Cloostermans




Fixation of a Non Fusion Scoliosis Correction Rod to a Juvenile Vertebra


Many different deformations can occur in a humane spinal column. One of the most common deformities is scoliosis. The treatment of a more severe scoliosis consists of surgical fusion of several vertebrae with a correction rod. The fusion of the vertebra results in a non flexible spine. This is a major downside of this procedure.

A new kind of correction rod is being developed at the University Twente. This correction rod does not fuse the vertebra while it is correcting the scoliosis. The correction rod has to be attached to at least three vertebrae, the anchors used to attach this non fusion rod to the vertebra will be developed in this project.


Develop a fixation which can anchor the non fusion correction device to the vertebra. The fixation has to transfer and withstand the forces of correction applied by the non fusion correction rod on the vertebra over a long period of time. The growth of the vertebra cannot be affected by the developed fixation.



The project will start with a study of the existing anchoring techniques.


New concept will be developed from which the best concept will be selected.


A prototype will be fabricated and tested.


Changes will be made to the product after evaluating the test data


A report will be made of the entire process.

Further information

No Further information.