Spine

OBJECTIVE: To 1) assess the bending strength and stiffness of canine cadaver spines after fixation of a lumbar spinal fracture-luxation using a novel unilateral stabilization technique with pins and polymethyl methacrylate (PMMA) and 2) compare the results to a reference standard dorsal pin and PMMA technique.

STUDY DESIGN: A randomized non-inferiority trial.

SAMPLE POPULATION: Cadaveric lumbar spines (L1-L6) from 20 Greyhounds.

Authors: Chamisha Y, Shamir MH, Merbl Y, Chai O
Journal: Veterinary Surgery

To report 2 dogs that developed temporary pelvic limb paralysis with loss of deep pain sensation after topical intrathecal morphine administration during spinal surgery.

Category: Spine
Authors: Hall DA1, Snelling SR, Ackland DC, Wu W, Morton JM.
Journal: Vet Surg

Abstract

OBJECTIVE:

To 1) assess the bending strength and stiffness of canine cadaver spines after fixation of a lumbar spinal fracture-luxation using a novel unilateral stabilization technique with pins and polymethyl methacrylate (PMMA) and 2) compare the results to a reference standard dorsal pin and PMMA technique.

STUDY DESIGN:

A randomized non-inferiority trial.

SAMPLE POPULATION:

Cadaveric lumbar spines (L1-L6) from 20 Greyhounds.

Authors: Armstrong J1, da Costa RC, Martin-Vaquero P.
Journal: J Vet Intern Med

BACKGROUND:

Great Danes (GDs) with osseous-associated cervical spondylomyelopathy (CSM) have osteoarthritis (OA) of the cervical vertebrae. OA is often associated with increases in bone mineral density (BMD) in people and dogs.

HYPOTHESIS/OBJECTIVES:

To compare the trabecular BMD of the cervical vertebrae between clinically normal (control) GDs and GDs with osseous-associated CSM by using computed tomography (CT). We hypothesized that the vertebral trabecular BMD of CSM-affected GDs would be higher than that of control GDs.

Category: Imaging - Spine
Authors: Gutierrez-Quintana R1, Guevar J, Stalin C, Faller K, Yeamans C, Penderis J.
Journal: Vet Radiol Ultrasound

Congenital vertebral malformations are common in brachycephalic "screw-tailed" dog breeds such as French bulldogs, English bulldogs, Boston terriers, and pugs. The aim of this retrospective study was to determine whether a radiographic classification scheme developed for use in humans would be feasible for use in these dog breeds.

Category: Deformity - Spine
Authors: Song RB1, Glass EN, Kent M, Sánchez MD, Smith DM, de Lahunta A.
Journal: J Am Anim Hosp Assoc

A 15 wk old male unilateral cryptorchid German shepherd dog weighing 18 kg was referred for a nonhealing cutaneous lesion dorsally at the level of the sacrum, urinary incontinence, and a deviated tail. MRI revealed spina bifida and meningomyelocele continuous with the skin surface. Surgical correction of the meningomyelocele involved closure of the open meningeal defect, transection of the abnormal spinal nerves to the skin surface, and closure of the skin defect with a good outcome. Histopathology confirmed a meningomyelocele.

Category: Spine
Authors: Hicks DA1, Millis DL.
Journal: VCOT

OBJECTIVES:

To determine ground reaction forces, head and pelvis vertical motion (HVM and PVM, respectively), and thoraco-lumbar lateral angular motion (LAM) of the spine using kinematic gait analysis in dogs with mild asymmetric weight-bearing of the pelvic limbs while trotting.

METHODS:

Authors: Hettlich BF1, Allen MJ, Glucksman GS, Fosgate GT, Litsky AS.
Journal: Vet Surg

OBJECTIVE:

To determine the biomechanical effect of an intervertebral spacer on construct stiffness in a PVC model and cadaveric canine cervical vertebral columns stabilized with monocortical screws/polymethylmethacrylate (PMMA).

STUDY DESIGN:

Biomechanical study.

SAMPLE POPULATION:

PVC pipe; cadaveric canine vertebral columns.

METHODS:

Category: Spine
Authors: Hilligas J1, Van Wie E, Barr J, Russell KE, Perry AL, Weeks BR, Zhang S.
Journal: J Vet Intern Med

No Abs

Category: Biologics - Spine
Authors: Huska JL, Gaitero L, Brisson BA, Nykamp S, Thomason J, Sears WC.
Journal: Can Vet J

Presence of residual material following mini-hemilaminectomy in dogs (n = 9) with spontaneous thoracolumbar intervertebral disc extrusion was prospectively investigated. Volume of extruded disc material within the vertebral canal and the proportion of residual material were determined using pre- and post-operative magnetic resonance imaging. The degree of spinal cord compression, proportion of extradural material considered hemorrhage, and invasion of the articular facets were also determined. Residual material was identified in 44% of the mini-hemilaminectomies.

Category: Spine