Oia For Elbow, Forearm And Wrist Complex

Front 1

Biceps Brachii O&I

Back 1

O:

Long Head - Upper margin of the glenoid fossa

Short Head - Tip of the scapula coracoid process

I: Bicipital tuberosity of the radius (on the antero-medial aspect of the radial shaft).

Front 2

Biceps Brachii A

Back 2

Elbow flexion

Forearm supination

Front 3

Brachialis O&I

Back 3

O: Anterior surface of the whole lower half of the humeral shaft

I: the tuberosity of the ulna which is situated immediately below the coronoid process

Front 4

Brachialis A

Back 4

Elbow Flexion

Front 5

Brachioradialis O&I

Back 5

O: Upper two-thirds of the lateral supracondylar ridge of the humerus

I: the base of the styloid process of the radius

Front 6

Brachioradialis A

Back 6

Elbow Flexion

Reduction of pronation and supination of the forearm (pulls to a neutral position)

Front 7

Pronator Teres O&I

Back 7

O: medial epicondyle of the humerus and the medial side of the coronoid process of the ulna

I: lateral surface of the radius, near the middle

Front 8

Pronator Teres A

Back 8

Forearm pronation (pulls through the full range)

Elbow Flexion (emergency assist)

Front 9

Pronator Quadratus O&I

Back 9

O: Anterior aspect of the lower fourth of the ulna

I: Anterior surface of the lower fourth of the radius

Front 10

Pronator Quadratus A

Back 10

Forearm Pronation (stabilization and power)

Front 11

Flexing palm up, palm down and in neutral position primarily activates which muscles, respectively?

Back 11

1) Palm up - Biceps Brachii

2) Palm Down - Brachialis

3) Neutral - Brachioradialis

Front 12

Triceps O&I

Back 12

O:

Long head - infraglenoid tuberosity

Lateral head - posterior surface of the upper half of the humerus

Medial head - posterior surface of the lower two thirds of the humerus

I: olecranon process of the ulna

Front 13

Triceps A

Back 13

Elbow Extension (pulls through full range)

Front 14

Anconeus O&I

Back 14

O: The posterior surface of the lateral epicondyle of the humerus

I: The lateral side of the olecranon process and the psoterior surface of the upper part of the ulna

Front 15

Anconeus A

Back 15

Elbow extension (initiates)

Front 16

Supinator O&I

Back 16

O: lateral epicondyle of the humerus and the adjacent portion of the ulna

I: The lateral surface of the upper third of the radius

Front 17

Supinator A

Back 17

Forearm Supination

Front 18

What are the flexors of the elbow?

Back 18

Biceps

Brachialis

Brachioradialis

Pronator Teres (assist)

Front 19

What are the extensors of the elbow?

Back 19

Triceps

Anconeus

Front 20

What are the supinators of the forearm?

Back 20

Biceps

Supinator

Brachioradialis

Front 21

What are the pronators of the forearm?

Back 21

Pronator Teres

Pronator Quadratus

Brachioradialis

Front 22

What are the anterior muscles of the wrist and their origins?

Back 22

1) Flexor Carpi Radialis

2) Palmaris Longus

3) Flexor Carpi Ulnaris

Common O: humeral medial epicondyle

Front 23

What are the actions of the anterior muscles of the wrist?

Back 23

Flexion

Radial Deviation (fexor and extensor carpi radialis)

Ulnar Deviation (flexor and extensor carpi ulnaris)

Front 24

What are the posterior muscles of the wrist and their origins?

Back 24

Extensor Carpi Radialis Longus

Extensor Carpi Radialis Brevis

Extensor Carpi Ulnaris

Common O: humeral lateral epicondyle

Front 25

What are the actions of the posterior muscles of the wrist?

Back 25

Extension

Radial Deviation (fexor and extensor carpi radialis)

Ulnar Deviation (flexor and extensor carpi ulnaris)

Front 26

Which muscle of the wrist complex is absent in about 14% of the population?

Back 26

Palmaris Longus

Front 27

How many degrees of ulnar deviation is normal? Radial deviation?

Back 27

30 ulnar

20 radial