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Injury Care > 1.1 Chapter 9: Mechanisms and Characteristics > Flashcards

1.1 Chapter 9: Mechanisms and Characteristics Flashcards

1
Q

Sprain

A

Injuried ligamnet from excessive joint movement

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2
Q

Trauma

A

physical injury or wound, produced by internal or external force

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3
Q

Mechanical injury

A

results from force.

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4
Q

Strain

A

Internal change in tissue.
Rip or tear in the muscle.

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5
Q

tendonitis

A

inflamation of the tendon

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6
Q

Tramatic vs. Overuse Injures

A

Traumatic/acute—Instant
Overuse/Chronic—Overtime

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7
Q

What are characteristics of Muscle that can be impraid during injury:

A

Irribility
Contractility (specific to muscle)
Conductivity
Extensibility
Elaciticy

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8
Q

What is a muscle Strain?
Why does it happen?

A

A strech, tear or rip to muscle;

1) failure in reciprocal coordination of agonist and antagonist
2) electrolyte imbalance due to profuse sweating
3) strength imbalance

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9
Q

Edema

A

Swelling

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10
Q

Ecchymosis

A

Discoloration

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11
Q

Tendinopathy

A
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12
Q

For tendon injuries where do the tears occur?

A

In the muscle

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13
Q

Tendonitis what does tha inits mean?

A

initis—inflamation

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14
Q

What is Tendinitis?
Treatment?

A

Gradual onset –repeated microtrauma
Signs of swelling

Treatment—Rest

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15
Q

What is Tendinosis?

A

Muscles begin to degenerate. of the collagen— no longer straight.

Less inflammation, visibly thicker with stiffness and restricted motion

Means Degnerating and inflammed

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16
Q

What is Microtrauma?

A

Repetitive stress on tendon

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17
Q

What is the results of Microtrauma?

A

Good:
Leads to increased collagen production

Bad:
Chronic strain due to reabsorption of collagen fibers
Weakened Tendons

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18
Q

How should you recover from a tendon injury? What are the dangers?

A

**Tendons should be loaded/conditioned gradually
** Collagen reabsorption occurs in early period of sports conditioning (and immobilization) making tissue
susceptible to injury

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19
Q

What is Tenosynovitis?
What is chronic?

A

Inflammation of synovial sheath:
—Decreased Synovial Fluid—friction; sticking to synovial sheath

Chronic cases result in thickening of tendon with pain and crepitus:

Often occurs in long flexor tendon of the digits and the biceps tendon

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20
Q

What is De Quervain’s Tenosynovitis?

A

Its Tenosynotivs in the wrist, or palms of hands

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21
Q

What are Myofascial Trigger Points?

A

Discrete, hypersensitive nodule within tight band of muscle or fascia

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22
Q

Myofascial Trigger: Latent Trigger Points

A

HAS TO BE TRIGGERED
—Does not cause spontaneous pain
—Applied pressure leads to pain
—May restrict movement or cause muscle weakness

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23
Q

Myofascial Trigger: Active Trigger Points.
Where is it found?
What causes it?

A

Sympotoms
1) Causes pain at rest
—Referd pain or radiating pain

2) Applying pressure = pain = jump sign

3) Tender to palpation with referred pain

**Where can it be found? **
—Postural Muscles

	 Cause: 
	     —result of **mechanical stress**
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24
Q

What are Contusions?
What are characertiscts of it?

A

Contusions:
—Result of sudden blow to body.
—Compression stress

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25
What is Hematoma?
**Hematoma**— (Knot) results from blood and lymph flow into surrounding tissue
26
What is Ecchymosis?
**Ecchymosis**— Discoloration
27
What are dangers of contusions? How do you treat?
Chronically inflamed and contused tissue may result in generation of calcium deposits (**myositis ossificans**) Bones calcify Treatment—Death Trap—Ice them with the person on stretch—NO HEAT
28
Atrophy
Atrophy is wasting away of muscle due to: 1) Immobilization/inactivity 2) Nerve functioning (Muscle Shrinking in size)
29
What is a Contracture? What are the effects?
Contracture is an **abnormal shortening** of muscle where there is a great deal of resistance to passive stretch Generally resulting from accumulation of scar tissue
30
What is Sacropenia?
Sarco—Muscle loss of muscle and strength that can happen when someone gets older and does less physical activity
31
What is Dupuytren's Disease?
It is a type of Contracture in the hands Unable to flex or straighten hands or wrists becuase of the shortened muscles in the palm
32
What do Synovial joints contain?
**Freely Moving Joint: Ball + Socket ** 1) hyaline or articular cartilage 2) fibrous connective tissue capsule 3) synovial membrane 4) blood and nerve supply with muscles crossing joint 5) menisci (fibrocartilage)
33
Ligament Sprains What is the most common sprain?
Tearing of ligament fibers; result of excessive joint motion Inversion/Lateral ankel Sprian
34
What are the levels of Severity of Sprains?
Grade I Some muscles torn: —some pain, —minimal loss of function, —no abnormal motion, —and mild point tenderness Grade II Number of fibers torn: —pain, —moderate loss of function, —**swelling**, —**instability** with tearing and separation of ligament fibers Grade III Tear ligamnet completely —Extremely painful —**Loss of function** (bc torn all the way through) —Severe instability —Swelling —**Subluxation**—Partcail dislocation (comes out and back in)
35
What is joint effusion?...................
Swelling of joint swelling, local temperature increase, pain and point tenderness, ecchymosis and possibly an avulsion fracture 1)
36
....
37
What do dislocations and subluxations have in common?
Seperation of bony surfaces
38
Subluxation
Partial dislocation, seperation of two bones but then they come back together on its own
39
Dislocations
a bone in a joint is froced out of alignment; Must be manually or surgically reduced; Gross deformatiy—can see by bilateral comparision (comparing both sides)
40
"Once a dislocation...
always a dislocation" Joints are disrupted
41
Sulcus Sign
Test for shoulder dislocation: place hand on spine of scapual, and pull downward on their humerus to see if it is dislocated If you feel movemnt in their scapula they have a seperated shouler
42
How should you treat a dislocation?
Like a fracture until ruled out; don't pop it back in, you could damage a nerve
43
What is Osteoarthritis? What are some causes? Symptoms?
Wearing away of hyaline cartilage; Caused by blow, pressure or repeated trauma: Symptoms: pain, stiffness, grating
44
What does crepitus mean?
grating. refering to wearing away of cartilige
45
What is a bursa?
Its the Olecranon bursua (Elbow); Bursae are fluid filled sacs in areas of friction
46
What is Bursitis? Sympotoms? what can it lead to?
Sudden irritation can cause acute bursitis, while overuse and constant external compression can cause chronic bursitis; Symptoms: swelling, pain, Leads to: Calicificationa nd degeneration of internal linings
47
Trochanteric Bursitis
Calcification of bursa?
48
Subacromion Bursa
*protecting the underlying supraspinatus muscle from attrition wear between the humeral head and the acromion*
49
Myosutis Ossifcatians
Boney deposists develop in muscle; usally from a contusion
50
What does Capsulitis and Synovitis have in common? Whats different?
Inflammation of the joint capsule; Cap—frozen shoulder; repeated truama Synovists– instant; edema; thickening of synovial lining
51
Capsylitis
result of repeated trauma; Motion may become restricted and joint noises may develop
52
Synovitis
Can occur acutely but will also develop following **mistreatment** of joint injury; Chronic synovitis can result in edema, **thickening** of the synovial lining, and a fibrous underlying develops; Motion may become restricted and joint noises may develop
53
What is Adhesive Capsulitis?
Frozen shoulder —Sunovitis
54
Stress
Internal resistance to a load
55
Load
An external force acting on the body
56
Stiffness
Ability of tissue to resist a load; The greater stiffness = greater load it can resist
57
What 5 types of tissuing loading produce stress/strain?
1) Tension Force that pulls Tissues 2) Compression Force that crushes 3) Shearing moves across parallel 4) Bending 5) Torsion
58
What is Tension? What type of injury do they cause?
Force that pulls Tissues Sprains & strains (Ligament tear)
59
What is Compression? What type of injury do they cause?
Force that crushes Contusions & Fractures
60
What is a shearing force? What type of injury do they cause?
Moves across the parallel Blistters & abrasions
61
What is Bending? What type of injury do they cause?
Combo of compression & Tension (3 point bend)
62
What is Torsion? What type of injury do they cause?
Twisting from opposite ends fractures
63
Musculotendinous complex
Means—The connection between a muscle and its tendon.
64
Cramps? What are causes?
Involuntray skeletal muscle contractions 1) Dehdration 2) electrolyte deficiency 3) Sarcolemma potentail
65
Muscle Guarding
After an injury; contracting to portect injured area.
66
Muscle spasms? and What are the two types?
A reflex to trauma Clonic—Alternating contractions and relaxations (fast) Tonic— Rigid contractions (lasts a long time)
67
Where do tears usally occur?
In muscle not tendons

Injury Care (8 decks)

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