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Vertebral Mechanics
UMDNJSOM
| Question | Answer |
|---|---|
| Long Bones | Lever (humerus) |
| Short Bones | Support and shock absorption (carpals of wrist) |
| Flat bones | protection (ilium) |
| Irregular bones | specific function (vertebra) |
| Sesamoid bones | alter angle of muscle insertion (patella) |
| Agonist Muscle | moves away from initial anatomical position |
| antagonist muscle | returns to the initial anatomical position |
| concentric contraction | muscle shortens (like lifting weights) |
| isometric contraction | muscle stays same length(holding up an object) |
| Eccentric contraction | force generated is insufficient to overcome external load. like, lowering something so it falls slowly instead of drops. |
| anatomy of spine | strength due to curvature. born with thoracic and sacral curves cervical and lumbar curves form during infancy |
| Structure of vertebrae | Vertebral body, vertebral arch, spinous proces, transverse process, four articular processes. |
| If you push the left transverse process of a spine in, which way is the spine rotating? | Right |
| Opposite of ease of motion | Restriction. = barrier. |
| Indirect tehcniques of somatic dysfunction | Ease of motion |
| Direct techniques of somatic dysfunction | into the barrier |
| Fryette's 1st law of physiologic motion | When thoracic and lumbar spine are in neutral position, coupled motion of sidebending and rotation for a group of vertebrae occurs to the opposite sides. GROUP-NEUTRAL-OPPOSITE sites. |
| Fryette's 2nd law of physiologic motion | When thoracic and lumbar spine is sufficiently flexed or extended(non neutral), coupled motions of sidebending and rotation in a single vertebrae occur to the same side. Single- NON neutral - Same Side. |
| 1st Law simple terms | Neutral spine. group. Sidebending one way, rotation opposite way. L1-4 N SrRl |
| 2nd law simple terms | Flexed/extended spine. Single. Sidebending one way, rotation same way. L2 E RrSr |
| When thoracic and lumbar spine is flexed or extended, what is engaged? | The facet joints. they dictate direction the body of vertebrae moves. |
| Fryette's 3rd law of physiologic motion | initiating motion of a vertebral segment in any plane of motion will mofiy the movement of that segment in the other planes of motion. |
| Spine | System of articulations Intervertebral discs cushion and distribute stress between vertebrae varying range of motion spine orientation during lift/load can influence stress |
Created by:
nady
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