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Partial lateral corpectomy of the thoracolumbar spine in 51 dogs: assessment of slot morphometry and spinal cord decompression

OBJECTIVE: To report slot morphometry, degree of spinal decompression, and factors influencing decompression after partial lateral corpectomy (PLC) of the thoracolumbar spine in dogs with intervertebral disc disease. STUDY DESIGN: Case series. ANIMALS: Dogs (n=51) with predominantly ventrally located spinal cord compression. METHODS: PLC (n=60) were performed. Spinal cord compression was determined by computed tomographic (CT) myelography (n=46), myelography (n=2) or magnetic resonance imaging (n=3). Postsurgical CT images were used to evaluate slot dimensions and orientation, and spinal cord decompression. The influence of age, body weight, breed, breed type (chondrodystrophic, nonchondrodystrophic), disc location, lateralization and mineralization, presurgical compression, slot morphometry, and surgeon on degree of decompression were evaluated. RESULTS: Mean slot depth was 64.1% of vertebral body width; mean height, 43.0% of vertebral body height; mean cranial extension, 29.5%; median caudal extension, 22.0% vertebral body length; mean angulation from horizontal, 6.3 degrees . Decompression was satisfactory in 90% of sites after PLC (58% complete, 32% good). None of the analyzed factors significantly influenced decompression. All lumbar spine PLC resulted in complete or good decompression compared with 83% after thoracic PLC (P=.052). Deeper slots tended to allow more complete decompression (P=.058). CONCLUSIONS: Thoracolumbar PLC results in satisfactory decompression in most cases with a better outcome in the lumbar spine than the thoracic spine. Achieving a slot depth equal to 2/3 of vertebral body width might facilitate complete decompression

Keywords : Animals,Body Height,Body Weight,Decompression,Dog Diseases,Dogs,Germany,Intervertebral Disc,Intervertebral Disc Degeneration,Intervertebral Disc Displacement,Magnetic Resonance Imaging,methods,Myelography,Orientation,Spinal Cord,Spinal Cord Compression,Spine,surgery,Universities,veterinary,, Lateral,Corpectomy,Thoracolumbar, jaw pain after botox

Date of Publication : 2011 Jan

Authors : Flegel T;Boettcher IC;Ludewig E;Kiefer I;Oechtering G;Bottcher P;

Organisation : Department of Small Animal Medicine, University of Leipzig, Leipzig, Germany

Journal of Publication : Vet Surg

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21077918

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