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Hemilaminectomy and vertebral stabilization for thoracolumbar intervertebral disc associated dynamic compression in 11 dogs.
Vet Comp Orthop Traumatol. 2013; 26(6):498-504.VC

Abstract

OBJECTIVE

To describe the diagnostic findings, surgical technique and outcome in dogs with thoracolumbar intervertebral disc-associated dynamic compression.

STUDY DESIGN

Retrospective case series.

ANIMALS

Client owned dogs (n = 11).

METHODS

Medical records (2005-2010) of dogs with a stress myelographic diagnosis of spinal cord injury due to thoracolumbar intervertebral disc-associated dynamic compression with inconclusive compression in the neutral myelographic views that had hemilaminectomy and vertebral stabilization were reviewed. Data on pre- and postoperative neurologic status, diagnostic findings, surgical techniques and outcomes were retrieved. Follow-up clinical and radiographic evaluations were performed immediately, and at approximately one, two, and six months postoperatively as well as at annual follow-up examinations.

RESULTS

The stress myelography demonstrated distinct ventral dynamic compression due to bulging of the disc and additional dorsal compression due to infolding of the ligamentum flavum in some cases. The median percentage of post-stress reduction in spinal cord height on the lateral view was 18.0% (9.8-27.2%). All dogs recovered after surgery and at follow-up examinations were still ambulatory (median: 45 months, range: 7 to 94 months).

CONCLUSIONS AND CLINICAL RELEVANCE

Thoracolumbar intervertebral disc degeneration may result in disc-associated dynamic compression. Stress myelography was an effective means of diagnosing this condition and hemilaminectomy with vertebral stabilization was an effective treatment resulting in long-term neurological improvement in all dogs.

Authors+Show Affiliations

Takeshi Aikawa, BVSc, Diplomate JCVS, Aikawa Veterinary Medical Center, 4-3-1 Nishi Otiai, Shinjuku-ku, Tokyo, 161-0031, Japan, Phone: +81 03 5988 7887, E-mail: taikawa@wb3.so-net.ne.jp.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24008559

Citation

Aikawa, T, et al. "Hemilaminectomy and Vertebral Stabilization for Thoracolumbar Intervertebral Disc Associated Dynamic Compression in 11 Dogs." Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T, vol. 26, no. 6, 2013, pp. 498-504.
Aikawa T, Shibata M, Sadahiro S. Hemilaminectomy and vertebral stabilization for thoracolumbar intervertebral disc associated dynamic compression in 11 dogs. Vet Comp Orthop Traumatol. 2013;26(6):498-504.
Aikawa, T., Shibata, M., & Sadahiro, S. (2013). Hemilaminectomy and vertebral stabilization for thoracolumbar intervertebral disc associated dynamic compression in 11 dogs. Veterinary and Comparative Orthopaedics and Traumatology : V.C.O.T, 26(6), 498-504. https://doi.org/10.3415/VCOT-12-12-0150
Aikawa T, Shibata M, Sadahiro S. Hemilaminectomy and Vertebral Stabilization for Thoracolumbar Intervertebral Disc Associated Dynamic Compression in 11 Dogs. Vet Comp Orthop Traumatol. 2013;26(6):498-504. PubMed PMID: 24008559.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hemilaminectomy and vertebral stabilization for thoracolumbar intervertebral disc associated dynamic compression in 11 dogs. AU - Aikawa,T, AU - Shibata,M, AU - Sadahiro,S, Y1 - 2013/09/06/ PY - 2012/12/15/received PY - 2013/06/27/accepted PY - 2013/9/7/entrez PY - 2013/9/7/pubmed PY - 2014/7/19/medline KW - Disc degeneration KW - intervertebral disc herniation KW - spinal cord injury KW - stress myelography KW - vertebral instability SP - 498 EP - 504 JF - Veterinary and comparative orthopaedics and traumatology : V.C.O.T JO - Vet Comp Orthop Traumatol VL - 26 IS - 6 N2 - OBJECTIVE: To describe the diagnostic findings, surgical technique and outcome in dogs with thoracolumbar intervertebral disc-associated dynamic compression. STUDY DESIGN: Retrospective case series. ANIMALS: Client owned dogs (n = 11). METHODS: Medical records (2005-2010) of dogs with a stress myelographic diagnosis of spinal cord injury due to thoracolumbar intervertebral disc-associated dynamic compression with inconclusive compression in the neutral myelographic views that had hemilaminectomy and vertebral stabilization were reviewed. Data on pre- and postoperative neurologic status, diagnostic findings, surgical techniques and outcomes were retrieved. Follow-up clinical and radiographic evaluations were performed immediately, and at approximately one, two, and six months postoperatively as well as at annual follow-up examinations. RESULTS: The stress myelography demonstrated distinct ventral dynamic compression due to bulging of the disc and additional dorsal compression due to infolding of the ligamentum flavum in some cases. The median percentage of post-stress reduction in spinal cord height on the lateral view was 18.0% (9.8-27.2%). All dogs recovered after surgery and at follow-up examinations were still ambulatory (median: 45 months, range: 7 to 94 months). CONCLUSIONS AND CLINICAL RELEVANCE: Thoracolumbar intervertebral disc degeneration may result in disc-associated dynamic compression. Stress myelography was an effective means of diagnosing this condition and hemilaminectomy with vertebral stabilization was an effective treatment resulting in long-term neurological improvement in all dogs. SN - 2567-6911 UR - https://www.unboundmedicine.com/medline/citation/24008559/Hemilaminectomy_and_vertebral_stabilization_for_thoracolumbar_intervertebral_disc_associated_dynamic_compression_in_11_dogs_ L2 - http://www.thieme-connect.com/DOI/DOI?10.3415/VCOT-12-12-0150 DB - PRIME DP - Unbound Medicine ER -