Lecture 4 - Assistive Devices and Guarding Flashcards
When is a tilt table used?
when patients need to acclimate to upright position
When are vital signs taken with a tilt table?
Before, during and after
What is a tilt table?
Table that is elevated gradually, starts supine and then goes to a “standing” upright positioning
When are parallel bars used?
balance training, teaching specific gait patterns, support while measuring an AD
How much elbow flexion do we need with parallel bars?
20-25 degrees elbow flexion
How much space horizontally does a patient need in the parallel bars?
2 inches wider than either greater trochanter
What should the top of a parallel bar be even to?
greater trochanter or wrist crease in standing with the UEs at sides
What are ambulatory ADs?
devices that provide external support during gait training in an upright posture
What are indications for usage of an AD?
- structural deformity, amputation, injury, or disease resulting in inability to bear weight through the LEs
- muscle weakness or paralysis in trunk or LEs
- balance deficits
What do ADs do?
- increase BOS
- provide a method for redistributing weight normally borne through LEs to UEs
Wha kind of force do ADs create?
- additional force that keeps the pelvis level in the face of gravity’s tendency to adduct the hip during unilateral stance
What is trendelenberg gait due to?
weakness or pain caused by large adductor moment due to the natural placement of the COM
How to pts compensate with trendelenberg gait?
- lean over the weaker side
- decreases the adductor moment
Why is a cane useful for trendelenberg gait?
- cane’s force substitutes for the hip abductors
- transmits part of the body weight to the ground decreasing the muscular force required for balancing (decreased demand)
How can ADs help with pain?
- decreased WB
- distribution of force over larger surface area
- improved joint stability (instability can cause pain)
How can ADs help with weakness?
- increased BOS
- redirection of the line of action of forces
How can ADs help with limited PROM?
- redirection of the line of forces
- stabilization of uninvolved joints
How can ADs help decreased endurance?
- improved efficiency of movement
How can ADs help with balance deficits?
- increased BOS
How can ADS help with impaired motor control?
- increased BOS
- increased WB
How can ADs help with fear of falling?
- increased BOS
What are some examples of ADs?
- walkers
- axillary crutches
- forearm crutches
- canes (quad or single point)
What do walkers provide?
a large degree of stability
What type of patients would benefit from a walker?
- generalized weakness
- dehabilitating conditions
- need to reduce WB on one or bothLEs
- poor balance/coordination
- inability to use crutches (need balance, coordination)
What are the types of walkers?
- standard
- wheeled (2 or 4)
- stair climbing walkers
- ring walkers (peds)
- knee walkers
- reverse walkers (peds)
- hemiwalkers
- reciprocal walkers
What kind of stability do axillary crutches provide?
Moderate stability
Do axillary crutches require more or less coordination than walkers?
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