GAIT--Knee Flashcards
Put in knee motion in sagittal plane chart from Notability!!!!
see chart
Knee motion sag. plane
IC
- motion== neutral
- quantity==neutral
Knee motion sag plane
LR
- motion== flexing
- quanitity== 0-20deg
Knee motion sag. plane
MSt
- motion== EXT
- quantity== 20-0deg
Knee motion sag plane
TSt
- Motion== Holding
- Quantity== Neutral
Knee motion Sag plane
PSw
- Motion== flexing
- quant== 0-40deg
Knee motion sag plane
ISw
- Motion== Flexing
- quant== 40-60/70deg
Knee motion sag plane
MSw
- motion== EXT
- quant== 60/70– 30deg
knee motion sag plane
TSw
- Motion== EXT to FULL EXT
- quant== 30–0deg (neutral)
Knee Flex Contracture
Step length==
DECd ipsilateral step length
Knee flex contracture
Cadence
- No change UNLESS pt makes effort to maintain velocity
- this req’s quicker steps to make up for step length
knee flex contracture
Velocity
- DECd due to less distance covered w/ ea step/stride
Knee flex contracture
Stride Length
- Shortened stride UNLESS Contralat. limb compensates w/ longer step
GRF @ IC
*NOTE: knee ext in TSw created by momentum of limb
- IC—> GRF
- ANT to knee ==== EXT moment
- Quads act minimally to stabilize knee & control momentum
GRF @ LR
- GRF shifts from ANT @ IC to POST @ LR as HAT continues forward over flexed foot
- === External knee FLEX moment
Quads activity in LR
-
External knee flex moment OPPOSED by Quad activity as an Internal knee EXT moment
-
ESP Vasti muscles!!!
- Mostly VL
- NOTE: rec fem only in SWING
-
ESP Vasti muscles!!!
Hamstrings in LR
NONE
- undesired
-
could cause excess FLEX or Jt compression
-
HS and Quads @ same time===co-contraction==jt. loading
- == lig injury, meniscus injury, OA
-
HS and Quads @ same time===co-contraction==jt. loading
GRF during Stance
LR
Gastroc
- despite being 2jt mm====> gastroc rel. silent @ LR
- Soleus helps to control tibia advancing forward
PF Spasticity
LR–> MSt
- patho. gait pattern often seen in pts post-CVA
- spastic PFs===knee hyperext
- == Extensor Thrust
- As limb loads—> excess PF spasticity drives tibia POST
- spastic PFs===knee hyperext
Knee Discomfort in MSt
3 Factors:
- Contralat limb is in swing, therefore 100% of WB occurs on involved limb
* HAT creates rel. ADD moment
- Contralat limb is in swing, therefore 100% of WB occurs on involved limb
- Transverse plane rotation b/w tibia and femoral condyles
-
MAY see Varus Thrust as degenerated medial compartment approximates
* == Lat. tension (stretching)
-
MAY see Varus Thrust as degenerated medial compartment approximates
Knee ROM during gait
MOST during where
SWING
*indiv. tries to shorten limb for clearance