PNF Flashcards
Basic principle of PNF
Motor learning is enhanced through skilled application of ten essential components of PNF
Ten essential components of PNF: MMMMVV JIBS
- Manual contacts
- Manual resistance
- MovementTiming
- Movement Patterns
- Verbal input
- Visual cues
- Joint facilitation
- Irradiation
- Body position and body mechanics
- Stretch
Manual contacts
Hand on skin
- stimulate pressure receptors
- provide pt.information about desired direction of movement- can be done passive, active and active with resisted
What type of grip should be used in manual contacts to control movement?
Lumbrical
Body position & mechanics
Dynamic clinician movement that mirrors the patient’s direction of movement . Essential in effective facilitation. The clinician’s pelvis, shoulders, arms, and hands should be placed in line with the movement. when this is not possible the arms and hands of the clinician should be in alignment with the movement. resistance is created through the use of the clinician’s body weight while the hands and arms remain relatively relaxed.
Stretch
Stretch reflex- utilized to facilitate muscle activity. If the muscle is placed in an elongated position, a stretch reflex could be elicited by producing slight movement further into the elongated range.
Contraindication for use of facilitator stretch- JFP
- Joint hypermobility
- Fracture
- Pain
T/F while quick stretch tend to increase motor response, prolonged stretch can potentially decrease muscle activity; therefore pt. response should be closely monitored
True
Manual Resistance
Manual, mechanical or gravitational forces utilized to apply external resistance to the body surface. Some PNF procedures focus on reducing internal resistance by altering neural firing patterns; other activities / techniques provide external resistance. Therefore in the context of PNF, resistance may be considered either a means of facilitation, through reduction of internal resistance, or a way to strenghten or train the target muscles, by an outside force. Through complex interactions among neural and contractile components,
Manual resistance may influence TEM3P
- Timing of functional movement patterns
- Endurance
- Movement initiation,
- Motor learning
- Muscle mass
- Postural stability
Lumbrical grip
MCP joints flexed & adducted while the fingers are in relaxed extension
Lumbrical grip
- Allows generation of flexion forces through the clinician’s hand without squeezing or exerting excessive pressure.
- Provides Optimal control of the three-dimentional movements that occur in PNF patterns
Irradiation (biggest principle in PNF)
A neurophysiologic phenomenon- spread of muscle activity in response to resistance, used synonymously with overflow and reinforcement.
In Irradiation the magnitude of the response increases as the
stimulus increases in duration and intensity
Why does PNF utilize the process of Irradiation?
To increase muscular activity in the agonist muscle or to inhibit opposing antagonist muscle groups.
With irradiation, resistance to trunk flexion produces
Overflow into the hip flexors and ankle DF
With irradiation, resistance to trunk extension produces
Overflow into the hip and knee extensors
With irradiation, resistance to UE extension & adduction produces
Overflow into trunk flexors
With irradiation, resistance to hip flexion, adduction, and ER produces
FADER
Overflow into the DFs
Joint facilitation
Traction & approximation stimulate receptors within the joint and periarticular structures.
Traction creates elongation of body segment in order to
facilitate motion and decrease pain
Approximation produces
Compression of body segments to promote stability and weight bearing
T/F - individual response to traction and approximation vary. These forces may be applied during performance of extremity patterns or superimposed body position
True
Timing of movement
Normal movements require smooth sequencing of muscle activation.Most functional movements occur in a distal to proximal direction, as in picking up a pencil. The pencil is grasped in the hand & then positioned for use by actions of the elbow and shoulder.
Patterns of movement
PNF is characterized by unique patterns of movement. Groups of muscles work together synergistically in functional contexts, they combine related movements to create PNF patterns. Because muscles are spiral and diagonal in both structure and function, most functional movements do not occur in cardinal planes. e.g reaching with an UE and walking are 2 common activities that occur as triplanar movements. PNF patterns therefore more closely simulate the demands incurred during functional movements.
Visual cues
Help a patient control and correct body position and motion. Eye movement influence both head and body position.
Feedback from visual system may be used to promote
Stronger muscle contraction & to facilitate proper alignment of body parts such as head & trunk through use of postural reactions