Surgical repair of thoraco-lumbar vertebral fracture-luxations in eight cats using screws and polymethylmethacrylate fixation.

Published on Jan 1, 2014in Veterinary and Comparative Orthopaedics and Traumatology0.877
· DOI :10.3415/VCOT-13-08-0098
Rosario Vallefuoco5
Estimated H-index: 5
M. Manassero7
Estimated H-index: 7
+ 3 AuthorsPierre Moissonnier8
Estimated H-index: 8
Objective: To report our clinical experience in the surgical treatment of feline thora-columbar vertebral fracture-luxations using optimal safe implantation corridors as previously described in vitro. Study design: Retrospective clinical study. Materials and Methods: Medical records and radiographs of cats with vertebral fracture- luxations stabilized by screws and polymethylmethacrylate (PMMA) using optimal safe implantation corridors between 2009 and 2011 were reviewed. For each patient the data included: signalment, cause of vertebral fracture-luxations, presence of concurrent injuries, pre- and postoperative neurological grade, surgical treatment, imaging findings, and clinical outcome with short-term (2 weeks) and long-term (12 months) follow-up. Results: Eight cats with vertebral fracture-luxations involving the lumbar (L)(n = 5), the thoracic (T) spinal segments (n = 2), or the thoraco-lumbar junction (n = 1) were included in the study. Screws and PMMA were used bilaterally in five cats and unilaterally in three cats. No surgical intra-operative complications using the defined corridors were recorded. Implant failure followed by spontaneous recovery was recorded in one case. Two cats died in the postoperative period (≤4 days). The short-term and long-term clinical outcome was excellent in four out of eight cats and satisfactory in two out of eight cats. Conclusion and Clinical relevance: This pilot study demonstrates the clinical applicability of optimal safe implantation corridors for stabilization of feline thoraco-lumbar vertebral fracture-luxations with screws and PMMA. This technique can be used with limited risks of iatrogenic injuries for stabilization of vertebral fracture-luxation localized between T11-L4.
Objective: To define the implantation corridors in feline thoraco-lumbar vertebrae (T10-L7) using computed tomography (CT) for optimal safe placement of the implants (screws/pins) in spinal column stabilization. Study design: Computed tomographic study. Materials and methods: Computed tomography images of feline spinal column (n = 10) were used to define the optimal safe implantation corridors (OSIC) in the transverse plane. The OSIC were defined as corridors allowing the greatest amount of bone...
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#1Lucas A. Smolders (UU: Utrecht University)H-Index: 13
#2George Voorhout (UU: Utrecht University)H-Index: 41
Last. Björn P. Meij (UU: Utrecht University)H-Index: 37
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Objective To assess pedicle screw-rod fixation (PSRF) of the canine lumbosacral junction (LSJ) ex vivo and in vivo. Study Design Ex vivo cadaver study and in vivo pilot study. Sample Population Six canine cadaveric lumbosacral spinal specimens and 3 Greyhound dogs diagnosed with degenerative lumbosacral stenosis (DLSS). Methods Ex vivo study: PSRF of the LSJ was performed in 6 spinal specimens using guidelines and was evaluated by radiography, computed tomography, and magnetic resonance imaging....
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#1M. W. Krauss (UU: Utrecht University)H-Index: 1
#2L. F. H. TheyseH-Index: 11
Last. Björn P. Meij (UU: Utrecht University)H-Index: 37
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The purpose of this retrospective study was to review the clinical use along with the short- and long-term outcome in patients treated with Lubra plates to stabilize spinal fracture and dislocations that were considered unstable at time of surgery according to the ‘three compartment theory’. The data that were collected included breed, age, gender, body weight of the patients, cause of injury, neurological grade (pre- and postoperative), radiographic findings, surgical treatment, and clinical an...
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Vertebral fractures and luxations (VFL) are a major cause of neurologic injury in small animal patients. These injuries are most commonly associated with severe external trauma, occurring in approximately 6% of cases presented with neurologic deficits indicative of spinal cord dysfunction, 1,2 but there is also a sizeable minority of affected animals that present following fracture of an abnormal bone (ie, pathologic fractures). VFL almost invariably cause pain and neurologic deficits. Neurologi...
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#1Bianca Felicitas Hettlich (A&M: Texas A&M University)H-Index: 13
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Vertebral column stabilization is performed for dogs suffering from instability secondary to trauma, neoplasia, caudal cervical spondylomyelopathy, infection and other. A common stabilizing technique involves bicortical placement of positive profile end-threaded Steinman pins into the vertebral body and pedicles. Bicortical placement of these pins carries a high risk for iatrogenic trauma of important neurovascular structures. A clinical frustration has been the difficulty determining exact impl...
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#1Monty Bali (Universidad Iberoamericana (UNIBE))H-Index: 3
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Last. Franck ForterreH-Index: 18
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The purpose of this retrospective study was to compare patterns of vertebral fractures and luxations in 42 cats and 47 dogs, and to evaluate the impact of species-related differences on clinical outcome. Data regarding aetiology, neurological status, radiographic appearance and follow-up were compared between the groups. The thoracolumbar (Th3-L3) area was the most commonly affected location in both cats (49%) and dogs (58%). No lesions were observed in the cervical vertebral segments in cats, a...
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The purpose of this retrospective study was to review cases of spinal fractures or luxations (SFL) treated with various modalities in order to describe fracture location, neurological status, treatment, outcome and complications in a patient population at a single centre. The medical records of dogs and cats that had been diagnosed with a SFL between C1 and L7 between January 1995 and June 2005 were reviewed in order to collect pertinent data. Ninety-five cases were included in this study. The s...
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#1Jason L. Wheeler (UF: University of Florida)H-Index: 10
#2Daniel Lewis (UF: University of Florida)H-Index: 31
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Objective— To evaluate outcome after closed fluoroscopic-assisted application of spinal arch external skeletal fixators in dogs with vertebral column injuries. Study Design— Retrospective case series. Animals— Dogs with traumatic vertebral column injuries (n=5). Methods— Medical records of dogs with vertebral column fractures and/or luxations stabilized with spinal arch external skeletal fixator frames applied using a closed fluoroscopic-assisted technique were reviewed. Owners were contacted to...
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Cited By3
#1Patricia Beer (UZH: University of Zurich)H-Index: 2
#2Sebastian Christoph Knell (UZH: University of Zurich)H-Index: 5
Last. Brian H Park (UZH: University of Zurich)H-Index: 1
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OBJECTIVE To evaluate spinal stabilization with tension band stabilization (TS) in cats compared to screw and polymethylmethacrylate fixation (SP). STUDY DESIGN Ex vivo study. SAMPLE POPULATION Sixteen feline thoracolumbar spinal specimens. METHODS The intact specimens were mounted in a six-degree-of-freedom biaxial testing machine for nondestructive testing to obtain the neutral zones (NZ) and range of motion (ROM) in flexion and extension. Thereafter, nondestructive testing was consecutively p...
#1Stephanie L Mella (RVC: Royal Veterinary College)H-Index: 2
#2Thomas Ja Cardy (Wellington Management Company)H-Index: 1
Last. Steven De Decker (RVC: Royal Veterinary College)H-Index: 18
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Spinal disease in dogs is commonly encountered in veterinary practice. Numerous diseases may cause similar clinical signs and presenting histories. The study objective was to use statistical models to identify combinations of discrete parameters from the patient signalment, history and neurological examination that could suggest the most likely diagnoses with statistical significance. A retrospective study of 500 dogs referred to the Queen Mother Hospital for Animals before June 2012 for the inv...
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#1Clara E. Moran (UIUC: University of Illinois at Urbana–Champaign)H-Index: 1
#2Tisha A.M. HarperH-Index: 8
Last. David J. Schaeffer (UIUC: University of Illinois at Urbana–Champaign)H-Index: 54
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Objectives: A study was performed to evaluate the lumbar vertebrae of domestic rabbits using computed tomography (CT) in order to identify safe corridors for implant insertion. Methods: Computed tomography imaging of 20 adult New Zealand white rabbits was evaluated using three-dimensional multiplanar reconstruction, and safe corridors were determined. Following corridor determination, implant placement was performed, and imaging was repeated. Results: The cranial and caudal endplates contained t...
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