Week 5: Assessment of Motor Control Flashcards
What is part of proximal motor control?
trunk, scapular, shoulder, elbow tone , ROM, motor control, strength
Ability to make dynamic postural adjustments and direct body and limb movement in purposeful activity
Motor Control
What components necessary for motor control?
normal muscle tone, normal postural tone and postural mechanisms, selective movement, coordination
Functional recovery depends on 5 things…
- initial amount of neurologic damage
- prompt access to medical treatment that limits extent of neurologic damage
- nature of neurologic damage
- whether it is static or progressive
- therapeutic intervention that can facilitate motor recovery
anatomical and electorphysiological changes in the CNS
neuroplasticity
T/F: some instances CNS is able to recognize and adapt to functional demands after injury
True
What are 2 ways motor relearning can occur?
- existing neural pathways (unmasking)
development of new neural connections (sprouting)
seldom used pathways become more active after primary pathway has been injured, adjacent nerves take over functions of damaged nerves
unmasking
dendrites from one nerve form a new attachment or synapse with another, new axonal processes develop in sprouting
sprouting
What’s a way to assess motor control?
observation of movement during OP
What are specific components of motor control?
- muscle tone
- postural tone
- postural mechanism
- reflexes
- selective movement
- coordination
this includes any nerve cell body or nerve fiber in spinal cord (other than anterior horn cells) and all superior structures like descending nerve tracts and brain cells of gray and white matter
upper motor neuron system
this includes anterior horn cells of spinal cord, spinal nerves, nuclei and axons of cranial nerves III and X, and peripheral nerves
lower motor neuron system
what does LMN dysfunction result in?
diminished or absent deep tendon reflexes and muscle flaccidity
Tool helps prioritize lint’s functional activity goals in areas of self care, leisure, productivity
COPM
What to consider when observing client for motor control?
- during ADL, IADL
- problems affecting motor control
- consider client’s sensation, perception, cognition, medical status
Test helps OT distinguish between normal and pathological aging in upper extremity performance - include picking up and moving jar, writing on envelope, tying scarf, handling coins
TEMPA
T/F: UMN facilitates/inhibits LMN
true.
What kind of assessments designed for motor control problems?
- Graded Wolf Motor Function Test
- Wolf Motor Function Test
- Functional Test for Hemiplegic Upper Extremity
- Fugl-Meyer
- Arm Motor Ability Test
- Motricity Index
- Assessment of Motor and Process Skills
Measure functional gains after hemiparetic event from CVA or TBI. 2 levels of difficulty for each task.
Level A is advanced, Level B is easier.
Graded Wolf Motor Function Test
Test used to quantify motor abilities of chronic clients from population with high UE function following CVA or TBI. Reliable 95097%
Wolf Motor Function Test
Test assesses client’s ability to use involved arm for purposeful tasks. Provides objective documentation of functional improvement and includes task ranging from those involve basic stabilization to more difficult tasks. ex) holding pouch, stabilizing jar, hooking zipper, folding sheet, putting light bulb
Functional Test for Hemiplegic Upper Extremity
Test based on natural progression of neurotic recovery after CVA. Low scores correlated with presence of severe spasticity. Measures paraments as ROM, pain, sensation, balance. Scores correlate with ADL performance
Fugl-Meyer
functional assessment of upper extremity function. Cutting meat, making sandwich, opening jar, putting on T shirt. Has high interrupter and test retest reliability
Arm Motor Ability Test
Perform quickly, it assess pinching cube with index finger and thumb, as well as elbow flexion, shoulder abduction, ankle dorsiflexion, knee extension, and hip flexion
Motricity Index
standardized test assesses motor and process skills in IADLs. Test created by OT. Eligible after 5 day training course.
Assessment of Motor and Process Skills
What does OT do after observing functional performance?
Assess performance components that underlie motor control: muscle tone (normal/abnormal), postural mechanism, muscle tone assessment/reflex, sensation, coordination.
Continuous state of mild contraction, or state of preparedness in muscle
Normal Muscle tone
Resistance felt by examiner as he or she passively moves client’s limb
tone
When is normal muscle tone present?
When tension between origin and insertion of muscle is felt as resistance by OT when passively manipulating limn. It is high enough to resist gravity but low enough to allow movement
Normal muscle tone relies on normal function of…
cerebellum, motor cortex, basal ganglia, midbrain, vestibular system, spinal cord, neuromuscular system, stretch reflex
- effective coactivation/stabilization at axial and proximal joints
- ability to move against gravity and resistance
- ability to maintain position of limb if it is placed passively by examiner and then released
- balanced tone between agonist and antagonistic muscles
- ease of ability to shift from stability to mobility and to reverse if needed
- ability to use muscles in groups or selectively with normal timing and coordination
- resilience or slight resistance in response to passive movement
Characteristics of normal tone
What is desirable when striving for selective motor control?
normalization of muscle tone and amelioration of paresis
flaccidity, hypotonus, hypertonus, spasticity, rigidity
other terms for abnormal muscle tone
Absence of tone. Can result from spinal or cerebral shock after spinal or cerebral insult. Result from LMN dysfunction
Flaccidity
Decrease in normal muscle tone. Deep tendon reflexes are deminished or absent
Hypotonus
Increased muscle tone
Hypertonus
Caused by TMI, stroke, anoxia, neoplasms, metabolic disorders, CP, disease of brain. Tone fluctuates
Cerebral Hypertonia
Results from diseases and injuries of the SC. In slow onset spinal disease, there is no shock. In traumatic SCI, shock occurs and there is initial flaccidity. This diminishes and then hypertonus develops.
Spinal Hypetonia
motor disorder characterized by velocity-depedent increase in tonic stretch reflexes with exaggerated tendon jerks resulting from hyperexcitaility of stretch reflex as one component of UMN syndrome
spasticity
CVA, brain injury, MS, Parkinson’s are common when …
motor control is lacking
What does recovery depend on?
Recovery depends on initial amount of damage, prompt access to medical treatment that limits the extent of neurologic damage, the nature of neurologic damage, whether it is static or progressive, and therapeutic intervention that can facilitate motor recovery
What does The upper motor neuron system consist of?
includes any nerve cell body or nerve fiber in the spinal cord (other than anterior horn cells) and all superior structures.
T/F: Descending nerve tracts and brain cells of both gray and white matter that subserve motor functions
True
The lower motor neuron system includes…
the anterior horn cells of the spinal cord, the spinal nerves, the nuclei and axons of cranial nerves III through X and the peripheral nerves
BLANK is an upper extremity functional activity performance test for clients
TEMPA
- Helps to distinguish between normal and pathological aging in upper extremity performance
o Picking up and moving a jar, writing on an envelope, tying a scarf, and handling coins, etc.
A continuous state of mild contraction, or a state of preparedness in the muscle.
Normal Muscle Tone
is mediated by the muscle spindle, a sophisticated sensory receptor that continuously reports sensory information from muscles to CNS
Stretch Reflex
o Effective coactivation at axial and proximal joints
o Ability to move against gravity and resistance
o Ability to maintain the position of the limb if it is placed passively by the examiner and then released
o Balanced tone between agonistic and antagonistic muscles
o Ease of the ability to shift from stability and to reverse as needed
o Ability to use muscles in groups of selectively with normal timing and coordination
o Resilience of slight resistance in response to passive movement
Normal Muscle Tone
T/F: Flexing synergy is more common in UE and extension synergy is more common in LE
True
T/F: Clients with UMN lesions will have dysfunction in spatial and temporal timing of movement leading to uncoordinated movements
true
Pressure sores, ingrown toenails, tight elastic straps on a urine collection leg bag, tight clothing, an obstructed catheter, urinary tract infection, constipation and fecal impaction
•Other factors: fear, anxiety, temperature extremes, heterotopic ossification, and sensory overload.
Hypertonus extrinsic factors?
can lead to muscle spasms severe enough to cause someone to fall out of
a bed or a wheelchair. Tone tends to be more severe in incomplete SC lesions than in complete lesions
spinal hypertonia
hyperactivity of muscle spindle’s phasic stretch reflex, velocity dependence, and the “clasp knife” phenomenon whereby when an examiner takes the extremity through a quick passive stretch then a catch or resistance is felt followed by a release
3 characteristics of spasticity
consists of corticospinal and corticobulbar tracts. Is one of the main systems affected when spasticity is present. Voluntary movement.
pyramidal system
T/F: hypertonia is velocity dependent and there is no clasp knife phenomenon
false. hypertonia is not velocity dependent and there is no clasp knife
phenomenon
specific type of spasticity, characterized by repetitive contractions in antagonistic
muscles in response to rapid stretch. Most commonly seen in ankle plantar flexors and finger
flexors.
Clonus
T/F; Therapists should teach clients to bear weight properly as this can usually stop the clonus. Clonus is recorded by number of beats. 3 count clonus is mild, if greater than 10 likely to interfere with ADLs
True
Simultaneous increase in muscle tone of agonist and antagonist muscles. They contract steadily, leading to increased resistance to passive ROM
Rigidity
Occurs in Parkinson’s, TBIs, some degenerative diseases, encephalitis, and tumors,
Rigidity