Abstract
This paper presents a three-dimensional (3D) multibody model of the cervical spine implanted with an artificial disc. The model was used to predict prosthesis placement influence on the resulting cervical kinematics in a series of patients. The vertebral tract modeled was the C2-C7, and the vertebral geometries were reconstructed from computed tomography (CT) images. The model was used to simulate the flexion-extension motion of the cervical spine in 10 patients implanted with the Prestige commercial disc prosthesis at a single level. For each patient, a geometrical model of the prosthesis was scaled and included in the multibody model to match the size and positioning of the actual prosthesis, as assessed on post-operative radiographs. Simulations of complete flexion-extension were carried out for each patient, and the main parameters relevant to the motion of the vertebral bodies were calculated and compared to data measured from dynamic post-operative radiographs. At the implanted level, the simulated ranges of motion generally agreed with the measured ones, with an average deviation
Original language | English |
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Pages (from-to) | 110-119 |
Number of pages | 10 |
Journal | Journal of Applied Biomaterials and Biomechanics |
Volume | 4 |
Issue number | 2 |
Publication status | Published - May 2006 |
Keywords
- Artificial disc
- Cervical spine
- Intervertebral disc
- Multibody model
- Prosthesis
ASJC Scopus subject areas
- Biophysics
- Mechanics of Materials