C/S Patho Pt 2 (14) Flashcards
What is a Jefferson’s fx
burst fx of C1 under axial load
MOI of Jefferson’s fx
compression with flex or ext
What is Hangman’s fx
bilateral fx of pars interarticularis at C2
MOI for Hangman’s fx
distraction w/ hyperext or forceful hyperext centered on chin (contact sports, diving, falling)
Type 1 dens fx
-avulsion fx
-stable
-tip of dens broken off
Type 2 dens fx
-fx base of dens
-unstable
Type 3 dens fx
-fx through body of C2
-unstable
-may involve facets C1 and 2
what motion does orthoses control the most
flexion, better than ext
What is a halo for? What’s the lowest segment it can go to?
-for unstable cervical and thoracic fx and dislocation
-T3
3 indications for halo
-all dens fx
-C1 fx w/ transverse lig rupture
-SCI
what % of flex and ext is limited by a halo
90-96%
How long is a halo used for
3 months
What happens if a halo has improper fit
can allow 31% norm spine motion
What is used after the removal of a halo
head cervical orthoses (HCO)
Contraindications for halo (2)
-severe skin probs
-psychological (anxiety, claustropobia)
Primary ROM limitations with halo (brief descriptions)
-rot completly restricted
-SB very limited
-flex/ext limited ~10% norm ROM
indications for Philadelphia collar (HCO; 3)
-immob after surgery
-cervical strain/sprain
-post trauma immob
2 contraindications for philadelphia collar
-severe skin probs
-severe cervical instab
primary ROM limitations with philadelphia collar (%)
-flex/ext limited to 65-70% norm
-SB limited 30-35%
-rot limited to ~50% norm
3 indications for soft collar
-mild cervical strain/sprain
-post trauma cervical pain
-recovery from non-surg interventions (ex/ manual)
2 contraindications for soft collar
-long term use (lead to atrophy)
-not for pts who need rigid immob
primary ROM limitations for soft collar
-flex/ext mild restrict ~50% norm
-SB slight limit, ~60% norm
-rot limited 50-60% norm
Describe what structures a philadelphia collar supports
-upper portion supports lower jaw and occiput
-lower portion covers upper thoracic
4 specific injuries/procedures that indicate philadelphia collar *don’t stress too much
-ant cervical fusion
-dens type 1 fx
-ant discectomy
-halo removal