Journal article
The effect of multi-level laminoplasty and laminectomy on the biomechanics of the cervical spine: a finite element study
The Iowa orthopaedic journal, Vol.34, pp.150-157
2014
PMCID: PMC4127738
PMID: 25328475
Appears in Diamond Open Access
Abstract
Laminectomy has been regarded as a standard treatment for multi-level cervical stenosis. Concern for complications such as kyphosis has limited the indication of multi-level laminectomy; hence it is often augmented with an instrumented fusion. Laminoplasty has emerged as a motion preserving alternative. The purpose of this study was to compare the multidirectional flexibility of the cervical spine in response to a plate-only open door laminoplasty, double door laminoplasty, and laminectomy using a computational model. A validated three-dimensional finite element model of a specimen-specific intact cervical spine (C2-T1) was modified to simulate each surgical procedure at levels C3-C6. An additional goal of this work was to compare the instrumented computational model to our multi-specimen experimental findings to ensure similar trends in response to the surgical procedures. Model predictions indicate that mobility was retained following open and double door laminoplasty with a 5.4% and 20% increase in flexion, respectively, compared to the intact state. Laminectomy resulted in 57% increase in flexion as compared to the intact state, creating a concern for eventual kyphosis--a known risk/complication of multi-level laminectomy in the absence of fusion. Increased disc stresses were observed at the altered and adjacent segments post-laminectomy in flexion.
Details
- Title: Subtitle
- The effect of multi-level laminoplasty and laminectomy on the biomechanics of the cervical spine: a finite element study
- Creators
- Swathi Kode - University of IowaNicole A Kallemeyn - University of IowaJoseph D Smucker - University of Iowa Hospitals and ClinicsDouglas C Fredericks - University of Iowa Hospitals and ClinicsNicole M Grosland - University of Iowa Hospitals and Clinics
- Resource Type
- Journal article
- Publication Details
- The Iowa orthopaedic journal, Vol.34, pp.150-157
- PMID
- 25328475
- PMCID
- PMC4127738
- NLM abbreviation
- Iowa Orthop J
- ISSN
- 1541-5457
- eISSN
- 1555-1377
- Publisher
- Dept. of Orthopaedics, The University of Iowa; United States
- Language
- English
- Date published
- 2014
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Craniofacial Anomalies Research Center; Injury Prevention Research Center
- Record Identifier
- 9984185472002771
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