Back Blue Boxes Flashcards
What is a common metabolic bone disease that is often detected during routine radiographic studies?
Vertebral body osteoporosis
What results from a net demineralization of the bones caused by a disruption of the normal balance of calcium deposition and resorption?
osteoporosis
Osteoporosis affects which areas of the skeleton the most?
neck of the femurbodies of the vertebraemetacarpalsradius
Vertical striping on radiographs of the vertebral column indicates what?
loss of the horizontal supporting trabeculae and thickening of vertical struts
What is the general name for posterior concave curvature of the spine?
lordosis
What is the general name for anterior concave curvature of the spine?
kyphosis
Surgical excision of one or more spinous processes and the adjacent supporting vertebral laminae
laminectomy
Performed surgically to gain access to the vertebral canal, providing exposure of the spinal cord
laminectomies
Often performed to relieve pressure on the spinal cord or nerve roots cuased by a tumor, herniated IV disc, or bony hypertrophy
surgical laminectomy
Which vertebrae can be dislocated in neck injuries with less force than is required to fracture them?
cervical vertebrae
Slight dislocation of the cervical vertebrae can occur without damaging the spinal cord because of what?
large vertebral canal in the cervical region
Stage I cervical vertebrae dislocation
flexion sprain
Stage II cervical vertebrae dislocation
anterior subluxation with 25% anterior translation
Stage III cervical vertebrae dislocation
50% translation
Stage IV cervical vertebrae dislocation
complete dislocation
Bony ring, with two wedge-shaped lateral masses, connected by a relatively thin anterior and posterior arches and a transverse ligament
the atlas
A Jefferson or burst fracture is fracture of which vertebrae?
the atlas
Vertical forces, as would result from striking the bottom of a pool in a diving accident, can easily fracture which vertebrae
atlas
Spinal cord injury is more likely with a C1 fracture if what has also been ruptured?
transverse ligament
One of the most common injuries of the cervical vertebrae (up to 40%)
fratures of the vertebral arch of the axis
Bony column formed by the superior and inferior articular processes
pars interarticularis
Fracture in the pars interarticularis of the axis is called?
traumatic spondylolysis of C2
A traumatic spondylolysis of C2 most often occurs as a result of what?
hyperextension of the head on the neck (whiplash)
How was hyperextension of the head and neck used to kill people?
execution of criminals by hanging (hangman’s fracture)
Paralysis of all four limbs
quadriplegia
Fracture that can result from a horizontal blow to the head or as a complication of osteopenia (40-50% of axis injuries)
fractures of the dens
Narrowing of the vertebral formane in one or more lumbar vertebrae
lumbar stenosis
Lumbar spinal nerves ______ in size as the vertebral column descends, but the IV foramen ______ in size
increasedecrease
When the developmental costal element of C7 becomes abnormally enlarged in 1-2% of people
cervical rib
When a supernumerary (extra) rib places pressure on structures that emerge from the superior thoracic aperture
thoracic outlet syndrome
closes the sacral hiatus
sacrococcygeal ligament
connective tissue strand extending from the tip of the spinal cord to the coccyx
filum terminale
local anasthetic agent is injected into the fat of the sacral canal that surrounds the proximal portions of the sacral nerves
caudal epidural anesthesia or caudal analgesia
palpable bony landmarks important for locating the hiatus
sacral cornua and S4 spinous process (medial sacral crest)
Caudal epidural anesthesia acts on which spinal nerves of the cauda equina?
S2 - Co1
Sensation is lost ____ to epidural blocks
inferior
Anesthetic agents is injected through the posterior sacral foramina into the sacral canal around the spinal nerve roots
transsacral epidural anesthesia
An abrupt fall onto your ass may cause a painful subperiosteal bruising or fracture/ dislocation of what?
coccyx / sacrococcygeal joint
Condition in approx 5% of people where L5 is partly or completely incorporated into the sacrum
hemisacralization / sacralization of the L5 vertebra
Condition where S1 is separated from the sacrum and is partly or completely fused with L5 vertebra
lumbarization of the S1 vertebra
When L5 is sacralized, the ______ level is strong, and the _____ level degenerates
L5-S1 (strong)L4 - L5 (degenerates)