B6.032 Prework 1: Overview of Vertebral Column and Anatomical Causes of LBP Flashcards
functions of vertebral column
protects spinal cord point of attachment of ligaments, bone/muscles or upper and lower limbs allow posture of the trunk contribute to locomotion transmit weight of upper body to legs provide mobility/stability to trunk
lumbar spine
least mobility, most stability
site of most pain in the back
components of vertebral column
vertebral bodies joints (facet and intervertebral) ligaments discs muscles
composition of the body of the vertebrae
cortical bone- outer
trabecular bone- inner
function of trabecular portion of body
assist with compressive forces imparted on spine
risk factors for trabecular fracture
lack of activity
smoking
age
osteoporosis
how can you fracture your trabecular bone
trauma or sudden forces
how do you maintain trabecular bone
physical activity
what part of the neural arch is at risk of fracture
pars interarticularis
what is the pars interarticularis
bridges superior and inferior spinous processes
important for weight bearing
region where forces are transferred from vertebral body to neural arch
who is at risk of a pars fracture
young people who are very active and do a lot of rotation/extension
typically in individuals < 20
fracture of the pars interarticularis
spondylosis
fracture on both sides of the pars with slippage
spondylolisthesis
pain associated with pars fracture
severe pain in center of back
does not radiate unless so severe that slippage compresses nerve roots
palpation reproduces symptoms
diagnosis of vertebral body
plain radiograph
bony changes
what is the facet joint
joints of spine between superior and inferior articular processes on each side of spine