L16 A. Assessment of UL after stroke Flashcards
What are the 3 characteristics in the recovery of UL function?
- Unacceptably poor - ~50% residual disability
- >50% ‘do not have enough movement to work with’
- Contribute to carer burden and loss of independence
What is stroke rehab within the first 14 days?
95% without therapist
5% with therapist = minimal movements
17% of 5 mins that is using UL (training UL = small amount of time)
3mins of UL training (overall)
5mins if you could walk
1 min if you couldn’t walk
What are 3 reasons why stroke rehab for the UL is important?
- Animal models of BI – to show functional reorganisation of motor cortex – need 600-800 reps
- BI = brain injuries
- Get new connections going (neuroplasticity)
- People with stroke can do 300 reps/hr
- It is possible to do high intensity (while we dnt know how much is enough)
- Large volume (not fitness) for skill improvement
- Optimal dose for functional recovery in stroke pts unknown, but evidence – intensive, task oriented practice + early
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What are 5 reasons why people are not doing more UL stroke rehab?
- Focus on discharge- Focus on balance and gait
- Main reason for not being discharged = unsafe mobilisation
- Safe gait primary determinant of d/c
- Spend 1-2hrs max with pt – focus on gait
- Often compensate with other limb
- Gains are often slow (because little time spent on it?) – spend more time where most rapid gains are made
What are 3 things we know about ‘normal’ upper limb function?
- Arm places the hand in the appropriate position and orientation in space to interact with the environment – ***the hand drives movement
- Arm and hand (and trunk) function as a single coordinated unit
- In bimanual tasks, the two upper limbs may function as a single unit
Purpose and action/object guides the way the UL does the action.
What happens after stroke?
Disuse = areas of brain do shrink in size (neuroplasticity)
What is disuse?
Disuse = areas of brain do shrink in size (neuroplasticity)
What are 3 things we know about “normal” reaching?
- a smooth well timed movement, performed using a straight line trajectory with an initial ballistic phase that reaches a peak and is then followed by a second phase in which velocity decreases
- When target is beyond arm’s length, trunk motion is integrated smoothly into transport phase of hand and is the last component to complete its motion
- For bimanual tasks, two arms function as a coordinated unit, beginning and completing the movement simultaneously, even when requirements for each arm differ
What are the 3 phases and essential components of reach to grasp?
- Transport
- Pre-shaping
- Grasp
How can no vision affect reach to grasp?
What are 5 characteristics of “normal movement synergies being disrupted” after post?
- loss of coordinated coupling between synergistic muscles of elbow & shoulder
- hand path disrupted with marked deviations from straight line path
- Increased variability in performance, decreased accuracy and decreased smoothness with some segmentation of movement
- Delayed reaction time, movement time, peak velocity and time at which peak velocity occurs
- With sensory loss - performance of reaching even slower, less fluent, less coordinated
What are 4 characteristics of what happens after stroke?
- Either cannot move (Completely flaccid), or will use compensations to achieve the goals
- These become substitutes for efficient, flexible mvt
- Become learned behaviours –> To do abnormal patterns
- We need to assist them to re-learn more efficient, effective movements to achieve a task
What are the 3 negative outcomes of abnormal patterns (post stroke)?
- High energy
- Pain
- Disuse of some muscles and overuse/incorrect use of other muscles
What are 6 common adaptive features in the UL (reach)?
- Sh Abd, trunk LF and E to replace isolated sh F
- Sh IR
- Elbow F
- Forearm pronation
- Wr F and ulna dev
- Finger F
What do we know about ‘normal’ grasping?
When reaching to grasp, the grasp component of the movement first involves preshaping of the hand, with hand aperture closely linked to the size and properties of the object to be manipulated
What are 3 characteristics of “difficulty with pre-shaping hand prior to grasp” after post?
- Hand may not open or may open excessively
- Hand /thumb / fingers may not be oriented appropriately for object size, shape or weight
- Can’t get arm in correction position
- Lack of smooth, co-ordinated closure with appropriate force. Activation of additional sensorimotor areas assoc with jerky mvt
What does grasp look like for a normal person vs post stroke?
What are 2 characteristics of “difficulty grasp and lifting object” after post?
- Difficulty building up force or sustaining force
- Fluctuations in force and difficulties matching the force to the task may also occur
What are 4 common adaptive features in the UL (grasp)?
- Forearm pronation
- Wr F and ulna dev
- Thumb add – limited abd / F to open hand and lack of conjoint rotation to hold
- Finger F all at once – IP – lack MCP and IP E and F
What are 2 things we know about “normal” manipulation?
Many functional possibilities
- due to the anatomical structure - allows multiple joint configurations
- Due to abundance of neural connections - allows widespread neural interaction, a large number of muscles cooperate ‘as one’ to produce a required output
What are 2 manipulation skills?
- Functional tasks:
- Writing, typing, clothing (zips, button, lace)
- In-hand manipulation skills:
- Translation – e.g. object to palm & back to fingers
- Shift – move fingers up & down an object- Eg. going up and down a pen
- Rotation – simple & complex