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ESHE 201 Test 1 Ch. 3
Terms in this set (36)
Most injury's occur during _________?
"Mechanism of injury" means?
How and injury occurs
Severity of an injury depends on?
1. Type and angle of force
2. Tissue affected- bone, muscle, tendon, ligament
The push or pull acting on a body
What are the 2 possible outcomes from force?
An athlete can apply force or an athlete can absorb force
Acting along the long axis of a structure
Squeezing or crushing a structure
Pulling or stretching on an object
Parallel or tangent to a structure- spine
Force around an axis-elbow/shoulder
The loss of continuity of a tissue resulting in rupture or fracture
Distribution of force within a body
Force has a greater stress on a ______ area of the body
A higher amount of _______ usually causes injury rather then a higher amount of ______
Macrotrauma -fracture ex: sprained ankle.
An acute injury is caused by?
A definitive moment of onset and single force
microtrauma -stress fracture ex: arthritis
A chronic injury is caused by?
A repeated chronic loading over a period of time, can persist for months or even years.
How many phases of healing for soft tissue are there?
Acute inflammatory 0-6 days
Proliferation 3-21+ days. Repair and regeneration
Maturation 1+ year. Remodeling
What are key signs of injury in the first several days? What phase is this?
Redness, heat, swelling, pain, loss of function. Phase 1: Acute Inflammatory
What are key events that happen in the first several days of an injury? And what phase is this?
Vasoconstriction, blood clotting mechanism, chemical mediator release. Phase 1: Acute Inflammatory
tissue death (necrosis) can last from a couple seconds to 10 minutes - reduces blood loss at a tissue site because blood thickens
Blood clotting mechanism
Chemical mediator release
Aids in the inflammation process, causes pain by stimulates nerve endings
In the inflammation process, as vascular permeability increases....
vasodilation of cells allows exudate to cleanse the site of debris and infectious materials
Plasma like substance that is made up of protein and (WBC) white blood cells
Swelling/enlargement of organs, skin, or other body parts. It is caused by a buildup of fluid in the tissues.
is a localized collection of blood outside the blood vessels, usually in liquid form within the tissue. Blood clot
Phase 2 begins when?
A hematoma is diminished to allow for growth of new tissue
What are key events that happen between day 3 - 6 to 8 weeks of an injury? What phase is this?
Scar tissue formation begins, improved vascularization, collagen is laid down. Phase 2: Proliferation (repair and regeneration)
What is the current debate in Phase 3?
Mobilization vs. immobilization
Which is typically better: mobilization or immobilization?
What are key events that happen between 3 weeks after injury - up to 1 year? What Phase is this?
Maturation of tissue -increases strength, Collagen fibers oriented along lines of stress, decrease flexibility, return to normal chemical activity within body. Phase 3: Maturation (remodeling)
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