OBJECTIVE: To report an endoscope-assisted lateral approach to expose the intervertebral foramen and disk and perform lateral corpectomy of thoracolumbar disks in dogs. STUDY DESIGN: Cadaver study. ANIMALS: Fresh canine cadavers (n=6). METHODS: A thoracic (T10-T11) and a lumbar (L3-L4) lateral approach were made on 6 fresh canine mixed breed cadavers. Through a limited skin incision, musculature was dissected and retracted using a neurosurgical self-retaining retractor and lateral corpectomy performed. The approach and bone removal, both performed under endoscopic control, were assessed. RESULTS: The foramen and intervertebral disk were clearly observed in all specimens without any iatrogenic injury of the ventral and dorsal nerve branches. Access to the foramen was possible in all specimens; in the thoracic area the head of the rib was always partially excised to observe the intervertebral disk medially. Lateral corpectomy was easily performed in all cadavers and spinal cord observation was good. Extension to foraminotomy or mini hemilaminectomy could easily be performed through the same limited approach. CONCLUSION: Endoscopic exploration provided a good viewing of the intervertebral disk and/or foramen. An endoscope-assisted thoracolumbar lateral corpectomy could effectively be performed through a limited approach to the thoracolumbar disks and allowed good ventral spinal cord assessment.
Abstract Background Traditional open anterior approaches to the TL spine were reported with a significant morbidity from a large wound field; therefore, “minimally invasive” thoracoscopic and laparoscopic anterior approaches have been recently introduced. However, these endoscopic techniques require a long and steep learning curve, require expensive disposable endoscopy material, and may be little suited for complication management. Alternatively, “mini-open” anterior approaches with table-mount...
#1Brett C. Wood(Virginia–Maryland Regional College of Veterinary Medicine)H-Index: 4
#2Otto I. Lanz(Virginia–Maryland Regional College of Veterinary Medicine)H-Index: 19
Last. Peter K. Shires(Virginia–Maryland Regional College of Veterinary Medicine)H-Index: 6
view all 4 authors...
Objective— To determine if endoscopic-assisted foraminotomy significantly increased the area of the L7-S1 intervertebral foramen and if, over 12 weeks, stenosis would occur. Study Design— Prospective, experimental study. Animal Population— Six clinically normal, 22–29 kg, adult dogs. Methods— Using endoscopic assistance, unilateral L7-S1 foraminotomy was performed. Computed tomography of L7-S1 was performed preoperatively, immediately postoperatively, and at 12 weeks. Parasagittal foramen area (...
Resume Objectif de l’etude Etudier l’interet de l’endoscopie dans la chirurgie des hernies discales foraminales par l’etude d’une serie de 191 operes. Materiel et methodes Tous les patients ont ete operes par voie posterieure paramediane avec resection partielle de l’isthme de maniere a exposer la racine dans le foramen. D’avril 1999 a mars 2002, une etude prospective de 191 patients operes avec cette technique a ete realisee. Les resultats ont ete evalues grâce aux criteres de Prolo. Resultats ...
Object. In this review the authors address the surgical strategies required to resect residual herniated thoracic discs. Methods. Data obtained in 15 patients who had undergone prior thoracic discectomy and who harbored residual or incompletely excised symptomatic thoracic discs were reviewed retrospectively. The surgical procedures that had failed to excise the herniated discs completely included 11 posterolateral approaches, one thoracotomy, and three thoracoscopyguided surgical procedures. Of...
#1Hae-Dong Jho(University of Pittsburgh)H-Index: 20
Endoscopy has been adopted for transsphenoidal pituitary surgery. A rigid rod-lens endoscope, 4-mm in diameter and 17-cm in length, is used in replacement of the operating microscope. This endoscopic technique utilizes the patient's natural nasal air passage as a surgical corridor without a sublabial or nasal mucosal incision. The use of a transsphenoidal retractor is not necessary. Postoperative nasal packing is not required. The average length of a patient's hospital stay is overnight. Postope...
AbstractBackgroundThe usefulness of video-assisted arthroscopic microdiscectomy for the treatment of a herniated lumbar disc has been studied previously. In the current prospective, randomized study, the results of this procedure were compared with those of conventional open laminotomy and discectom
AbstractWe studied the use of an endoscopic technique for lumbar discectomy, the most frequent operation in spinal surgery. Minimal invasive procedures are cost effective and allow earlier resumption of activities, work and sports. Endoscopic procedures have become more frequent in surgery but rarely for spinal surgery. It is sometimes used in the disc itself but not in the spinal canal. The goal of this operation is to reach the disc herniation in the spinal canal through a small incision, usin...
Object. The authors began using thoracoscopy to treat pathological conditions of the spine in 1992. In this study they delineate their clinical experience in which this procedure was used to resect herniated thoracic discs. Methods. Fifty-five patients underwent thoracoscopy for the resection of herniated thoracic discs. Thirty-six patients presented with myelopathies and 19 with incapacitating thoracic radicular pain. Forty-three patients underwent a single-level, 11 a two-level, and one a thre...
Study Design. The applicability of using video assisted thoracoscopic surgery (VATS) to resect thoracic discs was investigated. A laboratory study was conducted using two human cadavers and three live pigs as surgical specimens. A total of nine thoracic levels were decomnpressed. Objectives. To study the feasibility of performing thoracic resections using VATS. Summary of Background Data. VATS has been used by thoracic surgeons since 1991 to resect pulmonary lesions. As far as we know, VAT has n...
#1Julien Guevar(UW: University of Wisconsin-Madison)H-Index: 10
#2Natasha J. Olby(North Carolina State University College of Veterinary Medicine)H-Index: 35
OBJECTIVE: To report the successful treatment of intervertebral disc protrusion with minimally invasive microsurgery in a large breed dog. STUDY DESIGN: Retrospective case report. ANIMAL: A 4-year-old, neutered male, German shepherd dog presented with chronic progressive ambulatory paraparesis and thoracolumbar pain; lumbar intervertebral disc protrusion and severe spinal cord compression at L2-L3 were diagnosed. METHODS: A minimally invasive approach was used to access the target surgical area ...
#1Julien Guevar(UW: University of Wisconsin-Madison)H-Index: 10
#2Natalia Zidan(NCSU: North Carolina State University)H-Index: 4
Last. Natasha J. Olby(NCSU: North Carolina State University)H-Index: 35
view all 4 authors...
OBJECTIVE: To describe the safety and feasibility of a minimally invasive spine surgery technique to access the thoracolumbar vertebral canal in dogs. STUDY DESIGN: Prospective study. ANIMALS: Six healthy research dogs. METHODS: Dogs were placed under anesthesia for MRI to evaluate vertebral column and spinal cord integrity. Minimally invasive surgery was performed at multiple sites. Access to the vertebral canal was achieved by means of foraminotomy, discectomy, and lateral minicorpectomy by us...
#1Adam Drury(CSU: Colorado State University)H-Index: 2
#2Eric Monnet(CSU: Colorado State University)H-Index: 30
Last. Angela J. Marolf(CSU: Colorado State University)H-Index: 11
view all 4 authors...
OBJECTIVE: To define boundaries of minimally invasive integrated endoscopic hemilaminectomy at 4 sites in the canine thoracolumbar spine. STUDY DESIGN: Experimental, randomized cadaveric study. ANIMALS: Six cadaver dogs that had been humanely euthanized for reasons unrelated to this study. METHODS: Hemilaminectomy was performed with an integrated endoscopic system at T11‐12, T12‐13, L1‐2, and L2‐3, 1 at each site, on the left or right side of each dog. Each site was randomly assigned either a 19...
: During minimally invasive spinal surgery, correct identification of the affected intervertebral disc space is critical. Percutaneous palpation is commonly used, but results may be unreliable. Fluoroscopy is the gold standard but can be cumbersome and exposes operators to ionizing radiation. Spinal ultrasound has been described in veterinary medicine and could be a feasible alternative. This prospective, methods comparison study mimicked a minimally invasive spinal surgery in 10 canine cadavers...
Minimally invasive spine surgery (MISS) seems to have many benefits for human patients and is currently used for various minor and major spine procedures. For MISS, a change in access strategy to the target location is necessary and it requires intraoperative imaging, special instrumentation, and magnification. Few veterinary studies have evaluated MISS for canine patients for spinal decompression procedures. This article discusses the general requirements for MISS and how these can be applied t...
Last. Jae-Hoon Lee(Gyeongsang National University)H-Index: 10
view all 4 authors...
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 min...
#2Hee-Chun Lee(Gyeongsang National University)H-Index: 12
Last. Jae-Hoon Lee(Gyeongsang National University)H-Index: 10
view all 3 authors...
Objective To examine the technical feasibility of percutaneous endoscopic pediculectomy using a lateral approach and to evaluate its use for decompression and examination of the thoracic and lumbar spinal canals in small dogs. Study Design Experimental study. Animals Clinically normal adult dogs (n=10). Methods After optimizing the technique in cadavers, percutaneous endoscopic pediculectomy was performed using a lateral approach to the thoracic (T12) or lumbar (L2) vertebrae in 5 dogs each. Usi...
Objective To describe the use of a video telescope operating monitor (VITOM™) for ventral slot decompression and to report its clinical applications using preoperative and postoperative computed tomography (CT) myelography. Study Design Prospective case series. Animals Consecutive dogs presented with cervical intervertebral disc disease requiring surgical decompression (n = 30). Methods Demographic data, preoperative neurological status, localization and lateralization of the compression, total ...
Background The purpose of this retrospective study was to assess short-and medium-term outcomes in dogs with chronic ventral thoracolumbar intervertebral disc disease (IVDD) treated by thoracolumbar partial lateral corpectomy (TLPLC). Dogs surgically treated for chronic ventral IVDD by TLPLC were included. For each dog, neurological status evolution and complications were reported. Factors that could have influenced neurological recovery were statistically tested.
