lumbosacral

lumbosacral /lum·bo·sa·cral/ (-sa´kral) pertaining to the loins and sacrum.

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lum·bo·sa·cral (lmb-skrl)

adj.

Relating to the lumbar vertebrae and the sacrum.

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Lumbosacral

Referring to the lower part of the backbone or spine.

Mentioned in: Sciatica

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lumbosacral

[lum′bōsā′krəl]

Etymology: L, lumbus, loin, sacrum, sacred

pertaining to the lumbar vertebrae and the sacrum. Also sacrolumbar.

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lumbosacral

pertaining to the lumbar and sacral region, or to the lumbar vertebrae and sacrum.

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lumbosacral instability

see lumbosacral stenosis (below).

lumbosacral intumescence

the thicker portion of the spinal cord from which the roots of the lumbosacral plexus originate, corresponding to the caudal, cervical lumbar and the sacral spinal segments.

lumbosacral luxation

may result from trauma; common in dogs and cats. Neurological deficits result from injury to spinal nerves, and parenchymal hemorrhage and edema in spinal cord segments distant from the site.

lumbosacral plexus

a network made up of the caudal lumbar and sacral spinal nerves giving rise to the femoral, obturator, cranial gluteal, caudal gluteal, sciatic and pudendal nerves; innervates the perineum and muscles of the pelvic limb.

lumbosacral plexus injury

severe trauma to the hindlimbs may cause injury to the lumbosacral plexus, causing femoral and sciatic nerve deficits (inability to bear weight, extend or flex the stifle, dropped hock, and knuckling onto the digits).

lumbosacral spondylopathy

see lumbosacral stenosis (below).

lumbosacral stenosis

a reduction in diameter of the spinal canal at the level of the lumbosacral articulation may be caused by congenital anomalies of the vertebrae or acquired lesions. Weakness, pain and paresthesia with self-mutilation of the pelvic limbs and tail are clinical signs in dogs. Occurs as a congenital anomaly in some smaller dog breeds, and as an acquired defect in larger breeds, particularly the German shepherd dog.

lumbosacral syndrome

lesions involving the lumbosacral tumescence or the lumbosacral nerve roots. Signs include flaccid paresis or paralysis of pelvic limbs, paresthesia and sensory loss in the pelvic limbs, anal sphincter, tail, bladder and urethral sphincter, depressed or absent postural reactions in the pelvic limbs, and urine retention with passive incontinence. See also lumbosacral stenosis and lumbosacral plexus injury (above), cauda equina neuritis.