DI 7

  1. Uncovertebral jt
    • Jt of luschka
    • C3-6
    • Guides flex/ext, limits SB
  2. High risk factors that mandates a radiograph
    • 1. age >= 65
    • 2. Dangerous mechanism
    • ----fall down stair
    • ----axial loading
    • ----high speed auto accident
    • ----RV
    • ----bike collision
    • 3. Paraesthesia C/S stenosis
    • ----compress SC
    • ----B/B changes
    • ---- weakness, tingling in legs
  3. Low risk factors for radiograph
    • 1. simple rear end MVA (whiplash)
    • 2. sitting position in ED
    • 3. ambulatory at any time
    • 4. delayed onset of neck pain
    • 5. absence of midline C/S tenderness
  4. inflammatory phase
    time blood vessels ruptured causing bleeding and clotting forming hematoma
  5. Reparative phase
    • 7-14 days
    • hematoma invaded w/ capillaries to allow osteogenic cells from periosteum and endostium to form callus
  6. Remodeling phase
    • Clinically united
    • Fx line still visible but evidence of maturing callus
    • Cast removed
  7. Last bone healing phase
    • 60 mo
    • Complete union
    • Callus reabsorbed and replaced by mature bone
  8. Compression plates
    • ORIF
    • Compression helps approximate broken ends and facilitate bone growth so don’t have to be fixated as long
  9. Malunion
    Fx heals in bad position bc of bad reduction/ fixation or PT
  10. Delayed union
    Fx takes twice as long to heal due to poor fixation/ poor blood supply/ infection
  11. Non-union
    Fx hasn’t healed in 6-9 mo
  12. Best view to identify cervical fx
    • Lateral
    • Odontoid
  13. Odontoid fx
    • Due to violent upper C/S flexion
    • Possible breach of transverse or alar ligaments
    • May demonstrate torticollis, hoarseness, c2 NR
    • Odontoid view radiograph
  14. Rust sign
    • Pt holds weight of head in their hands
    • Means fx, don’t touch pt
Author
jld15
ID
321431
Card Set
DI 7
Description
DI 7
Updated