intro to MMT Flashcards
additional precautions for MMT x4
- NWB or PWB
- difficult testing conditions
- poor understanding (dementia/delirium)
- cannot safely/comfortable assume testing position
grade 0 scale =
no discernable muscle activity
grade 5 scale =
maximal or best-possible response
T/F: Assigned MMT grade reflects summed strength of all mm involved in an action, vs a specific mm in isometric strength?
true! With an emphasis on prime movers
break test
manual resistance AFTER ROM was observed against gravity
- don’t allow clinician to “break” hold x2-3 secs
break test tested at:
____ - 2 joint muscles
____ - 1 joint muscle
mid-range
end-range
application of resistance
applied @ length-tension most favorable near distal end of body segment
- except: IR/ER - force applied through distal forearm & lover leg instead
short lever arm =
muscle moves easier
longer lever arm =
the harder it is to move it, more of a challenge
T/F: longer lever arm provides more accurate reading in muscle strength & should be used more.
true, gives best results
against gravity
3-5; resistance applied parallel to LOG
gravity minimized
0-2; mm contracting perpendicular to LOG & body supported on smooth, flat surface
subjective factors:
- Clinician’s impression of amount of resistance given
- Amount of resistance the patient holds against during test
objective factors: black and white
- Ability of patient to complete full ROM & hold test position
- Ability to move part against gravity
- Inability to move part at all
- full rom against gravity (3)
- holds position w/o breaking
- if clinician breaks pt’s hold, it does not count!!!
grade 5 muscle
full AROM against gravity (3)
breaks test against max resistance
- muscle gives/yields to some extent
stabilization critical!
if limited by soreness,pain be sure do document (not be as accurate)
grade 4 muscle
full AROM against gravity
cant hold resistance
ensure jt isn’t locked - false strength
strength actually low - 5% of normal knee extension
- grater loss @ grade 3-5 than 3-1
grade 3 muscles
Can move body segment in gravity-minimized position
in horizontal plane
can be eased by use of power board
grade 2 muscle
visual or palpated contractile acitivty
no movement of actual body part
pt positioning is less important
clinician passively moves pt into testing position & asks them to hold and relax , enabling palpation or visualization of contraction
grade 1 muscle
No contraction able to be visualized or palpated
Doesn’t necessarily mean there is no muscle activation
“No discernable contraction”
grade 0
poor minus (2-/5)
subject does not complete ROM in gravity gravity-eliminated position
available ROM
mm shortness, a contracture, or fixed joint limitation limits ROM, the patient performs only within the ROM available
can still be awarded grade 5
- be sure to document MMT performed in pt’s limited ROM
