Balance, coordination, and function Flashcards
What are the parts of postural control and balance?
- stability (static postural control)
- controlled mobility (dynamic postural control; moving in and out of positions)
- anticipatory control - know something’s coming and make changes accordingly
- automatic control - maintaining balance and control when you don’t know it’s coming
What are motor strategies for balance?
- righting reactions - orient head in space and body in relation to the head and support surface
- equilibrium reactions - protective reactions (ankle, hip, and stepping strategy)
What are characteristics of cerebellar impairments?
- Hypotonia
- Dysmetria: hypometria and hypermetria
- Dysdiadochokinesia
- Intention Tremor
- Nystagmus: Cb nystagmus, vestibular nystagmus, and positional vertigo
- rebound phenomenon
Control of the position of body parts with respect to each other and gravity
postural control
Ability to keep center of mass within the base of support; all forces acting on the body are balanced
balance
When doing the Romberg test, the pt has a significant test without eyes closed. what does this indicate?
cerebellar problem
- not an appropriate test
Ability to execute smooth, accurate, controlled movements
coordination
- dependent on intact NM system from 3 inputs: visual, somatosensory, and vestibular
How do we test Anticipatory Control vs Automatic Control?
- Anticipatory Control – pt has eyes open; “I’m going to push in different directions I want you to hold you position”
- Automatic Control - pt has eyes closed; taking vision out, must rely more on proprioception and vestibular systems; Still tell them what you’re going to be doing; Consider safety, if testing this is appropriate even (fall risk?)
What are the balance grades? (4-0)
- 4 - Normal - Static: maintains steady balance wo/HHS; Dynamic: weight shifts easily, w/in full range, in all directions when maximally challenged
- 3 – Good - Static: HHS not req’d; min-postural sway present; Dynamic: accepts mod-challenge; can pick object up off floor
- 2 – Fair - Static: HHS req’d, and occasional min-assist req’d; Dynamic: accepts min-challenge; can turn head
- 1 – Poor: Static: HHS and mod-to-max-assistance req’d; Dynamic: LOB when challenged or attempts movement
0 - Absent: Unable to maintain static or dynamic balance
What are the main areas of the CNS involved if coordination impairments are present?
BG and Cb
general muscle weakness
Asthenia
(Cb pathology)
- application of manual resistance to determine ability to hold
Loss of ability to associate muscles together for complex movements
asynergia
Cb pathology
increased time required to initiate voluntary movement
delayed reaction time
Cb pathology
disorder of the motor component of speech articulation
dysarthria
Cb pathology
impaired ability to perform rapid alternating movements
dysdiadochokinesia
Cb pathology