ortho - spine Flashcards
spine anatomy
7 cervical vertebrae
12 thoracic vertebrae
5 lumbar vertebrae
vertebral articulation
- each is encapsulated in synovial joint
- often called apophyseal joints
spinal movement
- collectively (large ROM)
- flex/ ext
- L & R rotation
- L & R lateral flexion
postural alignment
2 natural curves of back
- lordotic (cervical & lumbar)
- kyphotic (thoracic)
lumbar lordosis
- curve inwards on lower spine
- exaggeration of lumbar curve
- associated w/ weakened abdominals
- characterised by low back pain
- in gymnasts & swimmers
thoracic kyphosis
- hunch on upper spine
- exaggerated thoracic curve
- occurs more frequently than lordosis
- mechanism: vertebra becomes wedge shaped = hunch
- swimmer’s back
- develops in children swimmers who train with an excessive amount of butterfly
- seen in elderly women w/ osteoporosis
scoliosis
- lateral deviation of spinal column
- C / S shape
- involves thoracic &/ lumbar regions
- associated w/ disease, leg length abnormalities, muscular imbalances
- more in females
- mild to severe cases
L3 load
- lowest in supine
- normal in standing
- 140% in sitting w/ no back support
- 150% when hunched
- 180% in hunched witting w/ no back support
spine conditions
- lumbar disk prolapse
- degenerative disc disease
- trauma
- tumour
- infections
trauma general
- upper cervical spine (C1 & C2)
- lower cervical spine (C3-C7)
- thoracic spine (#/dislocation)
- lumbar spine (#/dislocation)
spinal injury most common
- lumbar 70%
- thoracic 11%
- cervical 7%
- unspecified 12%
spinal conditions - trauma
- 50% trauma associated with other injuries
- MVA / sports injury
- ATLS resuscitation of pt
- x-ray before moving spine
spinal trauma upper cervical # - C1
a. Jefferson #
1. burst # of C1
2. axial loading with bilateral outward displacement of lateral masses of C1
b. isolated # of posterior arch of C1
1. hyperextension with impaction of posterior arch
spinal trauma upper cervical # - C2
spondylosis:
1. hangman’s # (MC)
2. hyperextension with bilateral # of pars interarticularis
spinal trauma lower cervical #
- hyperextension injuries (impact on face/neck)
- hyperflexion
- bilateral interfacet joint dislocation