Degenerative lumbosacral stenosis in dog
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Abstract
Degenerative lumbosacral stenosis (DLSS) in dogs is a common disorder in large breed dogs. It is characterized by intervertebral disc degeneration, spinal stenosis, and proliferation of bone and soft tissue. Lumbosacral stenosis and compression of the cauda equina caused the low back pain, pelvic limb lameness and neurologic deficits in dogs. Diagnosis of DLSS is based on the history, clinical signs, clinical examination and radiographic findings, and findings from computerized tomography scan (CT scan) or magnetic resonance imaging (MRI). CT scan and MRI provide visualization of the bony and soft tissue changes. Preoperative localization and characterization of the lesion in dogs with DLSS allows surgical treatment to be directed at the compressive lesion. Dorsal decompressive laminectomy is the most common surgical treatment of DLSS. Additional surgical techniques to further relieve cauda equina compression include dorsal fenestration, partial discectomy. Fixation techniques include distraction-fusion procedures, pedicle screw and rod fixation, and titanium intervertebral disc cage to stabilize the lumbosacral junction for improvement of the quality of life in these patients.
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