Orthotics test Exam with verified detailed solutions || || || || || ||
two reasons for orthotics - ✔✔1. stabilize: only block one motion
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2. immobilize: no movement
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purposes for orthotics - ✔✔-prevent or correct deformity
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-protect against injury || ||
-promote healing ||
-assist function ||
how are orthotics an art and a science - ✔✔-art: therapist creativity, skill in
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design, fabrication ||
-science: knowledge of anatomy, histology, physiology, joint and tissue
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biomechanics, pathology, wound healing || || ||
dangers of undermining science - ✔✔-overstress tissues and promote
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inflammation or injury || ||
-opposite undesirable effect: under stress, causes atrophy or contractures
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low temperature thermoploastics (LTT) - ✔✔-rubber or plastic materials
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-sheets range in thickness from 1/8 to 1/16
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-heating temp between 135-180 degrees F
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-how long material remains pliable refers to their working time
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three forms of orthoses - ✔✔1. custom fabricated: start with flat piece of
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material to a splint || || ||
2. Pre-cut/pre-formed: already made to the shape of the limb or already made
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and then you trim it down
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3. pre-fabricated: no work done to it
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orthoses vs. splint - ✔✔1. orthosis: less common term, but makes more sense
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2. splint:
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-used in most rehab literature
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-infers immobilization ||
-limits the scope of its abilities
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objectives of orthotic intervention: protective - ✔✔-immobilize
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-restrict motion (only allowing certain degrees or certain movement)
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-promote optimal joint alignment || || ||
-stabilize
-protect vulnerable or healing structures
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-exert traction on a joint
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-move joint through desired controlled arc
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(ex: cut flexor tendom can be broken by actively flexing or pushing into
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extension, so you use dorsal blocking splint for active extension and rubber
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bands flex) ||
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objectives of orthotic intervention: corrective - ✔✔contractures (put them in a
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stretch to allow movement) or subluxed joints
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objectives of orthotic intervention: assistive - ✔✔-assist movement of joints
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during functional activities when weak or paralyzed muscles exists
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-reduce muscle tone or spasm to promote joint stability
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(outside rig) ||
orthotic design categories - ✔✔-static splint: holding joint in one position
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-serial static: only in one position but remolding it as they gain motion
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-dynamic: if it has a rubber band; allows for movement
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-static progressive: it is static but patient has ability to reattach it and progress it
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dense CT: what's included? - ✔✔-tendons
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-ligaments
-joint capsules
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-dermis
(anything other than bone) || || ||
dense CT characteristics of fibers - ✔✔-composed primarily of collagen fibers
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-small amounts of elastic fibers
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-***fibroblasts synthesize both types of fibers || || || || ||
-orientation of fibers is tension dependent || || || || ||
-habitual stress affects the orientation
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