OTA week 3 Flashcards
normal muscle tone
state of readiness when it is called upon to move
abnormal muscle tone
*Flaccidity and Hypotonicity
* Spasticity and Hypertonicity
* Rigidity
what is flaccidity?
- loss of muscle tone
- absence of active movement
- in UMN injury and a SCI, flaccidity can arise after shock, then transition to hypertonicity after a few weeks or months
what is hypertonicity?
- high muscle tone
- movement can be uncoordinated
- hard to initiate movement
what is hypotonicity?
- decreased muscle tone
what is clonus?
type of spasticity - mod-severe
often seen in the finger flexors and ankle plantar flexors
hypertonia vs spasticity
- Hypertonia is not velocity
dependent. - During passive movement, no
cactch is felt with hypertonia. - Spasticity can’t be objectively
measured with EMG like
hypertonia.
what are the 4 types of rigidity?
- lead pipe rigidity
- cog wheel
- decorticate
- decerebrate
what is decorticate?
abnormal types of posturing and are associated with a brain injury
- flexed posturing is damage to cerebral hemispheres
- adduction and flexion of arms and hands with be closed shut
- legs will be rotated internally and feet flexed
TIP for decorticate posturing: Remember the letters COR in the word decorticate for the word “core”. The patient will bring their ARMS to the core of the body (middle).
what is decerebrate?
abnormal types of posturing that is associated with a brain injury
- damage to brain stem
-worst type between the two - adduction and extension of arms and pronated hands and fingers will be flexed
- legs are extended and feet and plantar flexed
TIP for decerebrate posturing: Look at all the E’s in the word. There are a lot of them, so remember the word EXTENDED. The arms are going to be extended rather than flexed.
modified ashworth scale
it assess muscle tone
0 = no increase in muscle tone
1 = slight increase in muscle tone
1+ = slight increase in muscle resistance throughout the range
2 = moderate increase in muscle tone throughout ROM, PROM is easy
3 = marked increase in muscle tone throughout ROM, PROM is difficult
4 = marked increase in muscle tone, affected part is rigid
treatment for spasticity
- meds/injections
- motor learning
- weight bearing
- casting/splinting
coordination
production of accurate, controlled movement
requires:
- proprioception
- body scheme
- ability to judge space accurately
ataxia
cerebellum and pons are affected
- delayed movement
-jerky and poorly controlled movement
- falls, poor postural stability
what is dysmetria?
- faulty distance between two points
- missing the target, with difficult movement precision