Elbow Flashcards

1
Q

Elbow joint capsule

A

loose and weak ant and post

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2
Q

carrying angle

A

results in valgus angulation

allows for a person to carry object at side away from thigh

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3
Q

ulnar collateral lig

A

stabilizes against valgus

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4
Q

radial collateral lig

A

varus force

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5
Q

annular lig

A

keeps head of radius on ulna

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6
Q

Radial head and capitulum articulation

A

In full EX no contact

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7
Q

Elbow joint Artrho

A

concave on convex

OKC

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8
Q

Closed packed
humeroulnar
humeroradial

A

HU - full EX and SUP

HR - 90 elbow FL and 5 SUP

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9
Q

open packed
humeroulnar
humeroradial

A

HU - FL 70 and SUP 10

HR- Full EX and SUP

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10
Q

Capsular pattern elbow joint

A

FL>EX

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11
Q

Prox radioulnar joint what occurs

A

rotation

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12
Q

pronation occurs when

A

when radius crosses over the ulna

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13
Q

dist radioulnar joint what occurs

A

concave on convex

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14
Q

Prox RU joint arthro

A

just describing spin lat or medial

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15
Q

Distal RU joint arthro

A

Concave on convex

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16
Q

CKC sup and pro for humerus

A

sup requires IR of hum

pro requires ER of hum

17
Q

Closed packed prox RU

A

5 of sup

18
Q

open packed prox RU

A

70 FL 35 SUP

19
Q

capsular pattern RU

A

Sup=pro

20
Q

closed packed dist RU

A

5 sup

21
Q

open packed distal RU

A

10 sup

22
Q

capsular pattern Dist RU

A

sup=pro

23
Q

FL torque greatest

A

Elbow in Sup is better than pro

24
Q

brachialis in elbow

A

workhorse

involved in all types of elbow FL

25
Q

toque gen of elbow EX

Ant Delt and extensor

A

ant delt helps synergize with elbow ex

it helps keep the shoulder flexed and allows the tricep not to extend the shoulder while extending the elbow

26
Q

Pro and sup works with what to get full 360

A

pro with IR
sup with ER
to achieve almost 360 degrees of motion

27
Q

Supinator vs Biceps

A

sup activation at any angle

bicep high power especially when elbow flexed

28
Q

Screwdriver co contrations

A

Triceps must co-contract to prevent biceps from actually flexing the elbow and shoulder during supination effort

29
Q

Law of parsimony

A

henamon size principle

fewest muscles or muscle fibers possible for the control of a given joint action

energy efficiency

30
Q

Pro teres vs pro quad

A

pro quad = low power activities

pro teres = high power

31
Q

pro teres and tricep

A

tricep activates to counteract the tendency for teres to flex at elbow

32
Q

in a C6 tetraplegic can use what to get out of bed

A

they have total paralysis of elbow EX

can use pec major and ant delt to EX elbow and lock it out so they can use that arm to balance on

only can happen with CKC hand