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Ballistic Stretch - Knee Jerk test
Both activate muscle spindles
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Muscle spindles
detects the stretch of muscle
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Amphiarthriodial Joints
partial joints / slightly moveable
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Hyaline cartilage
holds the bone together
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Hip and Shoulder
- are triaxle joints (3planes of otion)
- -flexion/ext
- -abd/adduction
- -roation/circumduction
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Synovial Fluid
- lubrication for joints
- three locations
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Synovial fluid (3locations)
bursae, tendon sheath, articular cartilage
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Two functions of art cartilage
minimize friction and protects dislocation
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Goniometer
measures joint angles (ROM)
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Number of proprioceptors do not affect ROM of joint
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GTO
- Inhibit tension in activated muscles
- Initiate tension in antagonist muscle
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Closed packed position at a joint
- when a joint, the muscles are under stretch or activated
- -more stable joint position
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Synarthriodial joints
typically not weak
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Joint stability affected by (3)
- shape of articulating bone
- arrangement and size of ligament
- area of contact between the bones (less = less)
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Sprain, Dislocation, bursistis
inflammation
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passive stretching demonstrates a greater ROM
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Hyperflexion at the shoulder
arm goes beyond 0 degrees
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Pressure
amount of force over a given area
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extension
the opening of an angle
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Superficial
toward the surface of the body
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Torque
unit of torsion measured in N/m
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Superior
Closer to the head
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adduction
away from midline
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stress
distribution of force within a body
-
proximal
closer to the trunk
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impulse
product of force over time wthich force acts
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lack of flexibility
erector spinae
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Sacral region of spine
pubis, illium, ischium
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muscle fatigue
- reduction of muscle force
- shortening velocity
- prolonged relaxation between motor unit recruitment
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Hip Joint - two bones
-femur and acetabulum
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fast twitch oxidative flycolytic fibers
contract quickly and fatigue rate is intermediate
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Radial deciation
movement of the head at the thumb side in frontal plan
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Running downhill, why pick up speed?
increase stride length
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Displacement
includes positive, negative, north, and down
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increase spinal loading
- rotation
- assymetric frontal loads
- increase lifting speeds
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articulation between adjacent vertebrae
there is cartilage
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biceps brachii strongest when supinated
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Lateral pelvic tilt
positions the acetabulum for hip abduction
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