Week 3 part 2 Flashcards
(34 cards)
open chain - percussive or sustained action. (striking or stroking)
non-gripping action
open chain on verge of closing - hook grip, scooping, and cupping.
transitional forms
thumb wraps around back of fingers to provide additional force
crude power grip/sledgehammer
if more control is needed (with less force) to grip, where does the thumb move?
thumb moves along shaft of tool handle
*what should the diameter of the handle of single handle tools for POWER TASKS be? and what can be used to increase the diameter and provide comfort?
1 1/4 - 2 inches, a sleeve
pressure from a hard surface, point, or edge on any part of the body
contact pressure
what are contact pressures made worse from?
repetitive tasks
what should the diameter of the handle of single handle tools for PRECISION TASKS be?
handle diameter 1/4 - 1/2 an inch
what should the maximum open span be for double handle tools for PRECISION TASKS?
no more than 3 inches
what should the minimum closed grip span be for double handle tools for PRECISION TASKS?
not less than 1 inch
placement of work piece will affect posture in which 5 body parts?
- shoulder
- elbow
- wrist
- hand
- back
awkward postures may cause you to use more ___.
force
the right tool will not cause __ and __.
pain, fatigue
what should the maximum open grip span be for double handle tools for POWER TASKS?
no more than 3.5 inches
what should the minimum closed grip span be for double handle tools for POWER TASKS?
no less than 2 inches
what should the handle legnth be for tools for high force tasks?
longer than the widest part of your hand - usually 4-6 inches
name 6 OT treatments for hand tool injuries.
- modalities as indicated
- splinting
- therex/stretching as indicated
- nerve glides
- k tape during work
- ergonomic education
teach patient about natural alignment and maintaining non awkward body postures during work, hand position with tool use
ergonomic education
vibration transmitted to hand and arm from power tools
hand arm vibration syndrome
- disc presses on nerves
- may or may not cause pain
herniated/bulging disc
*name the 2 most common sites of disc herniation.
- L4-L5
- L5-S1
wear and tear on discs btwn vertebrae
degenerative disc disease
when does disc disease become degenerative?
over 3 months
- pain, weakness, numbness, and other discomfort along the path of the sciatic nerve
- low back pain
- symptom of a problem at some point along the sciatic nerve rather than an ailment in and of itself.
- causes include herniated disc, spinal stenosis, and others.
- often develops over time from low back injuries and wear and tear
sciatica
