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kines 2nd shift > elbow and forearm complex > Flashcards

elbow and forearm complex Flashcards

1
Q

origin of the lateral compartment of the muscle of the forearm
located: elbow 90 deg, FA mid prone

A

lateral supracondylar ridge

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2
Q

common extensor origin

aka “extensor epicondye”

A

lateral epicondyle

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3
Q

common elbow flexor origin

point to the rear

aka “flexor spicondyle”

large and easy to locate

A

medial epicondyle

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4
Q

Hour glass shape

Has two portion separated by the trochlear groove

medial

A

Trochlea

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5
Q

Spheroid in shape

Capitulotrochelar groove in between
- Where radial head slides during elbow flexion

A

Capitulum

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6
Q

superior to trochlea

Receives the coronoid process of the ulna

A

Coronoid fossa

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7
Q

Above the capitulum

Receives the head of the radius

A

Radial fossa

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8
Q

Trochlear ridge / longitudinal ridge

Trochlear / semilunar notch - concave

Coronoid process

Ulnar tuberosity

Radial notch

A

Ulna

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9
Q

Head

Fovea

Neck

Radial tuberosity
- Trochlear notch
- Coronoid process

A

Radius

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10
Q

articulate with convex capitulum

A

Fovea

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11
Q

joints of elbow and fa region

A

humeroulnar joint

humeroradial joint

proximal radio-ulnar joint

distal radio-ulnar joint

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12
Q

humero-ulnar jt

type of joint

deg of freedom

capsular pattern

cpp

opp

A

Type of Joint: Synovial diarthrodial hinged/ginglymus joint

Degrees of Freedom: 1

Capsular Pattern: flexion, extension

CPP: extension with supination

OPP: 70° elbow
flexion, 10° supination

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13
Q

humero-radial jt

type of joint

deg of freedom

capsular pattern

cpp

opp

A

Degrees of Freedom: 1

Type of Joint: Synovial diarthrodial hinged/ginglymus joint

Capsular Pattern: Flexion, extension, supination, pronation

CPP: Elbow flexed to 90°, forearm
supinated to 5°

OPP: Full extension and full supination

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14
Q

proximal and distal radio-ulnar jt

type of joint

deg of freedom

capsular pattern

cpp

opp

A

Type of joint: Synovial diarthrodial pivot/trochoid joint

Deg of freedom: 1

Capsular Pattern: Equal limitation of supination and pronation

CPP: 5°
supination

OPP: 35°
supination, 70° elbow flexion

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15
Q

trochlea of the humerus TO trochlear notch of the ulna

A

humeroulnar joint

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16
Q

capitulum of the humerus TO fovea of the radius

A

humeroradial joint

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17
Q

head of the radius and the annular ligament and the radial notch on the ulna

A

Proximal radio- ulnar joint

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18
Q

rounded head of the ulna and the ulnar notch on the radius

A

Distal radioulnar joint

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19
Q

ligaments

A

medial/ulnar collateral ligament

lateral/radial collateral ligament

annular

quadrate

oblique

anterior distal radioulnar ligament

posterior radioulnar ligament

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20
Q

to the medial epicondyle, - olecranon process TO the coronoid process

A

medial/ulnar collateral ligament

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21
Q

to the lateral epicondyle of the humerus TO the upper margin of the annular ligament

A

lateral/radial collateral ligament

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22
Q

attached to the anterior and posterior margins of the radial notch on the ulna TO the head of the radius

A

annular ligament

23
Q

below the radial notch of the ulna TO medial surface of the neck of the radius

A

quadrate ligament

24
Q

lateral side of the ulnar tuberosity TO just distal to the bicipital tuberosity

A

oblique ligament

25
from the anterior aspect of the radioulnar joint
Anterior (palmar) distal radioulnar ligament
26
dorsal aspect of the radioulnar joint
posterior (dorsal) radioulnar ligament
27
roll and slide of humeroulnar and humeroradial joint during flexion
Roll and slide: anteriorly
28
roll and slide of humeroulnar and humeroradial joint during extension
Roll and Slide: Posteriorly
29
spin of prox and distal radioulnar joint during pronation
Pronation: anterior Spin
30
spin of prox and distal radioulnar joint during supination
Supination: posterior spin
31
elbow flexors
brachialis biceps brachii brachioradialis pronator teres
32
elbow extensors
Triceps anconeus
33
elbow pronators
pronator teres pronator quadratus
34
elbow supinators
biceps brachii supinator
35
work horse of the elbow flexors; least controversial; uninfluenced by the position of the forearm active with or without a load; motion is rapid or slow effective when forearm is pronated
Brachialis
36
“supinator longus” -pure elbow flexor when the forearm is in midposition
Brachioradialis
37
three jointed mm (act as shoulder flexor, elbow flexor and forearm supinator)
Biceps Brachii
38
biceps brachii is active as elbow flexor when
Supinated- with or without load; slow or fast Pronated- increasing speed and increasing load (greater than 2lbs)
39
biceps brachii little to no activity
slow flexion in forearm pronated and 2lbs or less
40
More powerful, 5x cross section and shortening range 2x than anconeus - medial head is next in line after the anconeus “work horse of the elbow extension” -lateral head- next in line if moderate to high extensor demand -long head- last to act if high extensors demand “reserve elbow extensor”
Triceps
41
appears to be the fourth head of the extensor mechanism as to low level of elbow extension, usually first mm to initiate the motion (initiator of elbow extension)
Anconeus
42
active during quick elbow supination
Biceps Brachii
43
biceps is 4x better as supinator when
in 90 deg flexion
44
biceps is 2x better as supinator when
elbow is extended
45
active when elbow extended, slow and without resistance
Supinator
46
has two heads: humeral and ulnar -As a primary forearm pronator; strongest -greatest activity during higher power pronation actions
Pronator Teres
47
-pronates the forearm unaided by other mm if pronation is performed slowly without resistance and without active elbow flexion -is the most active and consistently used pronator muscle, involved during all pronation movements, regardless of the power demands or the amount of associated elbow flexion -stabilizer of the distal radioulnar joint
Pronator Quadratus
48
is the angle formed between the long axis of the upper arm (humerus) and the long axis of the forearm (forearm bones, radius, and ulna) when the elbow is fully extended, and the forearm is supinated (palm facing forward).
Carrying angle / Cubital Angle
49
normal values of carrying angle
Normal: 15 deg (mean values 5-19 deg) Men: 11-14 deg Women: 13-16 deg
50
carrying angles disappears when
Full elbow extension with FA pronated Full elbow flexion with FA supinated
51
increased carrying angle > 15 deg
Cubitus valgus
52
decreased carrying angle, less than 5-15 deg
Cubitus varus / Gunstock deformity
53
Mobile Wad of Three
Brachioradialis, ECRL, ECR

kines 2nd shift (8 decks)

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