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J Vet Med Sci ; 79(9): 1532-1539, 2017 Sep 12.
Article in English | MEDLINE | ID: mdl-28757523

ABSTRACT

The present study aimed to investigate the technical feasibility of percutaneous endoscopic mini-hemilaminectomy via a uniportal approach, and to evaluate the possibility of decompression and endoscopic examination of the thoracic and lumbar spinal canals in small dogs during such procedures. Fresh canine cadavers of mixed-breed dogs (n=7) were used in this study. Following injection of a barium and agarose mixture (BA-gel) to stimulate intervertebral disc herniation, percutaneous endoscopic mini-hemilaminectomy was performed using a lateral approach to the thoracic and lumbar vertebrae. BA-gel was removed to decompress the spinal cord using an elevator and rongeurs after mini-hemilaminectomy. Pre and post-operative computed tomography (CT) scans were obtained to evaluate surgical outcomes. Intra-operative complications, incision length, and procedure time were recorded. All procedures were completed with clear visualization of the spinal cord and floor of the spinal canal. The mean total operating time was 58.00 ± 18.06 min. Lengths of incision were under 1 cm in all dogs. Intra-operative complications included iatrogenic nerve root injuries caused by the micro-rongeur in two dogs. CT imaging revealed that removal of BA-gel resulted in sufficient spinal cord decompression. Our findings indicated that percutaneous endoscopic thoracolumbar mini-hemilaminectomy is feasible for spinal cord decompression and allows for adequate observation of the spinal canal. Thus, this technique may be an alternative surgical option for treatment of thoracolumbar disk disease in dogs.


Subject(s)
Dog Diseases/surgery , Endoscopy/veterinary , Intervertebral Disc Displacement/veterinary , Laminectomy/veterinary , Animals , Barium Sulfate , Cadaver , Disease Models, Animal , Dogs , Endoscopy/adverse effects , Endoscopy/methods , Feasibility Studies , Intervertebral Disc Displacement/surgery , Laminectomy/adverse effects , Laminectomy/methods , Neuroendoscopy/adverse effects , Neuroendoscopy/methods , Neuroendoscopy/veterinary , Sepharose , Tomography, X-Ray Computed/veterinary
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