Comparison of the biomechanical performance of a customized unilateral locking compression plate with and without an intervertebral spacer applied to the first and second lumbar vertebrae after intervertebral diskectomy in canine cadaveric specimens

Selz, Julie; Voumard, Benjamin; Forterre, Franck (2020). Comparison of the biomechanical performance of a customized unilateral locking compression plate with and without an intervertebral spacer applied to the first and second lumbar vertebrae after intervertebral diskectomy in canine cadaveric specimens. American journal of veterinary research, 81(12), pp. 915-921. American Veterinary Medical Association 10.2460/ajvr.81.12.915

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Objective: To determine whether a customized unilateral intervertebral anchored fusion device combined with (vs without) an intervertebral spacer would increase the stability of the L1-L2 motion segment following complete intervertebral diskectomy in canine cadaveric specimens.

Sample: Vertebral columns from T13 through L3 harvested from 16 skeletally mature Beagles without thoracolumbar disease.

Procedures: Complete diskectomy of the L1-2 disk was performed in each specimen. Unilateral stabilization of the L1-L2 motion segment was performed with the first of 2 implants: a unilateral intervertebral anchored fusion device that consisted of a locking compression plate with or without an intervertebral spacer. The resulting construct was biomechanically tested; then, the first implant was removed, and the second implant was applied to the contralateral side and tested. Range of motion in flexion and extension, lateral bending, and torsion was compared among intact specimens (prior to diskectomy) and constructs.

Results: Compared with intact specimens, constructs stabilized with either implant were as stable in flexion and extension, significantly more stable in lateral bending, and significantly less stable in axial rotation. Constructs stabilized with the fusion device plus intervertebral spacer were significantly stiffer in lateral bending than those stabilized with the fusion device alone. No significant differences in flexion and extension and rotation were noted between implants.

Conclusions and clinical relevance: Findings did not support the use of this customized unilateral intervertebral anchored fusion device with an intervertebral spacer to improve unilateral stabilization of the L1-L2 motion segment after complete L1-2 diskectomy in dogs.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic
10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Musculoskeletal Biomechanics
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV)
05 Veterinary Medicine > Department of Clinical Veterinary Medicine (DKV) > Small Animal Clinic > Small Animal Clinic, Surgery

UniBE Contributor:

Selz, Julie; Voumard, Benjamin and Forterre, Franck

Subjects:

600 Technology > 630 Agriculture
500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)
600 Technology > 610 Medicine & health

ISSN:

0002-9645

Publisher:

American Veterinary Medical Association

Language:

English

Submitter:

Manuel Roland Schmidli

Date Deposited:

18 Dec 2020 13:58

Last Modified:

18 Dec 2020 13:58

Publisher DOI:

10.2460/ajvr.81.12.915

PubMed ID:

33251837

BORIS DOI:

10.7892/boris.148483

URI:

https://boris.unibe.ch/id/eprint/148483

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