Anatomy - Upper Limb Flashcards

1
Q

Pec major goes from (3 places)

A

Sternum
Upper 6 costal cartilages
Medial 1/2 clavicle

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2
Q

Pec major goes to (1)

A

Anterior axillary fold of lateral humerus

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3
Q

Pec major actions (3)

A

ADDuction of arm
Flexion of arm
Medial rotation of arm

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4
Q

Pec major nerve supply

A

C5-T1

Medial and lateral pectoral nerve

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5
Q

Pec minor From (1)

A

Ribs 3-5

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6
Q

Pec minor goes to (1)

A

Coracoid process of scapula

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7
Q

Pec minor actions (2)

A

Stabalises scapula

Depresses tip of shoulder

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8
Q

Pec minor nerve supply

A

C8-T1 Medial and lateral pectoral nerve

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9
Q

Trapezius goes from (2)

A

Occipital protuberance

Cervical and thoracic vertebrae

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10
Q

Trapezius goes to (2)

A

Spine of scapula

Lateral 1/3 clavicle

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11
Q

Trapezius actions (4)

A

Elevates, retracts, rotates scapula

Braces shoulder backwards

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12
Q

Trapezius nerve supply

A

CN XI Spinal accessory nerve

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13
Q

Latissimus dorsi goes from (2)

A

T6-L5 spines

Iliac crest

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14
Q

Latissimus dorsi goes to

A

Intertubercle groove of humerus

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15
Q

Latissimus dorsi actions (3)

A

Adduction of arm
Medial rotation of arm
Raises body towards arm in climbing

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16
Q

Latissimus dorsi nerve supply

A

C6-7 Long thoracic nerve

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17
Q

Serratus anterior goes from (1)

A

Lateral surface of ribs

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18
Q

Serratus anterior goes to (1)

A

Medial border of scapula

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19
Q

Serratus anterior actions (3)

A

Rotates scapula
Protracts scapula
Holds scapula against thoracic wall

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20
Q

Sternoclavicular joint type

A

Fibro-cartilage with articular discs

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21
Q

Acromio-clavicular joint type

A

Fibro-cartilage with articular discs

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22
Q

Changes seen in acromio-clavicular joint dislocation

A

Rupture of AC ligament and CC ligament causes acromion to appear inferior to clavicle and more prominent.

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23
Q

Subscapularis from (1)

A

Subscapular fossa

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24
Q

Subscapularis to (1)

A

Lesser tubercle of the humerus

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25
Q

Subscapularis actions (2)

A

Medial rotation of arm

Adduction of arm

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26
Q

Subscapularis nerve supply

A

C5-7 Subscapular nerve

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27
Q

Teres major from (1)

A

Lower angle of scapula

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28
Q

Teres major to (1)

A

Intertubercular sulcus of humerus

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29
Q

Teres major actions (2)

A

Adduction of arm

Medial rotation of arm

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30
Q

Teres major nerve supply

A

C6+7 Lower subscapular nerve

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31
Q

Which artery supplies the circumflex humeral artery?

A

Axillary artery

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32
Q

Brachial plexus comes from which nerve roots

A

C5-T1

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33
Q

Broad structure of brachial plexus

A

Roots – Trunks – Divisions – Cords – Nerves

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34
Q

Waiter’s tip palsy

A

Superior plexus injury caused by separation of neck from shoulder

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35
Q

Claw hand palsy

A

Inferior plexus injury caused by sudden pull of arm superiorly

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36
Q

Chest drain insertion site

A

5th intercostal space, midaxillary line

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37
Q

Lymph from lateral 1/2 of breast drains to

A
Axillary nodes: 
75% anterior
Central
Apical
Lateral
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38
Q

Lymph from medial 1/2 of breast drains to

A

Parasternal nodes

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39
Q

Other sites of breast lymph drainage (3)

A

Posterior intercostal nodes
Infraclavicular nodes
Supraclavicular nodes

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40
Q

Supraspinatus actions (1)

A

Initiates abduction of arm

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41
Q

Supraspinatus nerve supply

A

C4-C6 suprascapular nerve

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42
Q

Infraspinatus actions (1)

A

Lateral rotation of arm

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43
Q

Infraspinatus nerve supply

A

C4-C6 suprascapular nerve

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44
Q

Teres minor actions (1)

A

Lateral rotation of arm

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45
Q

Teres minor nerve supply

A

C5-C6 Axillary nerve

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46
Q

Deltoid actions
Anterior (2)
Mid (1)
Posterior (2)

A

Anterior - Flexion and medial rotation of arm
Mid - Abduction
Posterior - Extension and lateral rotation of arm

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47
Q

Deltoid nerve supply

A

C5-6 Axillary nerve

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48
Q

Shoulder movements - Flexion (2)

A

0-90
Pec major
Anterior deltoid

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49
Q

Shoulder movements - Extension (3)

A

0-45
Teres major
Latissimus dorsi
Posterior deltoid

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50
Q

Shoulder movements - Internal rotation (5)

A
0-40
Pec major
Latissimus dorsi
Teres major
Anterior deltoid
Subscapularis
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51
Q

Shoulder movements - External rotation (3)

A

0-55
Infraspinatus
Teres minor
Posterior deltoid

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52
Q

Shoulder movements - Adduction (2)

A

0-45
Pec major
Latissimus dorsi

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53
Q

Shoulder movements - Abduction (4)

A
0-180
Supraspinatus
Deltoid
Trapezius (rotates scapula)
Serratus anterior (rotates scapula)
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54
Q

Shoulder joint type

A

Synovial ball and socket

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55
Q

Shoulder joint is stabilised by glenohumeral ligaments for

A

Anterior reinforcement

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56
Q

Shoulder joint is stabilised by coraco-humeral ligaments for

A

Superior reinforcement

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57
Q

Shoulder joint is stabilised by coraco-acromial ligaments for

A

Superior protection

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58
Q

Coraco-acromial arch contains (2)

A

Supraspinatus tendon insertion

Subacromial bursa

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59
Q

Rotator cuff stability direction - subscapularis

A

Anterior

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60
Q

Rotator cuff stability direction - Supraspinatus

A

Superior

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61
Q

Rotator cuff stability direction - Infraspinatus

A

Posterior

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62
Q

Rotator cuff stability direction - Teres minor

A

Posterior

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63
Q

Action of coracobrachialis (2)

A

Flexion of forearm

Adduction of arm

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64
Q

Nerve supply of coracobrachialis

A

C5-7 musculocutaneous nerve

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65
Q

Action of brachialis (1)

A

Flexion of forearm

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66
Q

Nerve supply of brachialis

A

C5-6 Musculocutaneous nerve

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67
Q

Action of biceps (2)

A

Flexion of forearm

Supination of forearm

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68
Q

Nerve supply of biceps

A

C5-6 musculocutaneous nerve

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69
Q

Brachial pulse can be felt

A

Medial to biceps tendon at the elbow

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70
Q

The brachial artery is a continuation of

A

the Axillary artery

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71
Q

The brachial artery is accompanied by deep veins called

A

venae comitantes

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72
Q

Main branches of the brachial artery (5)

A

Profunda brachii (winds behind the humerus with the radial nerve in the spiral groove to anastamosis at the elbow)
Muscular
Nutrient (supplies the humerus)
Ulnar collateral (superior and inferior. Accompanies ulnar nere to anastamosis at the elbow
Terminal - radius and ulnar

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73
Q

Median nerve comes from which brachial plexus roots

A

Medial and lateral

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74
Q

Surface marking of median nerve

A

Crosses brachial artery medially in mid arm

Lies medial to brachial artery in cubital fossa, medial to bicipital tendon

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75
Q

Musculocutaneous nerve supplies

A

Skin of lateral forearm

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76
Q

Musculocutaneous nerve is the nerve of which component of the arm

A

Flexor component. Supplies
Corachobrachialis
Brachialis and
Biceps brachii

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77
Q

Ulnar nerve surface markings

A

Passes down medial side of arm and runs posterior to medial epicondyle

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78
Q

Medial cutaneous nerve of the arm supplies the

A

Skin on the medial side of the arm

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79
Q

Medial cutaneous nerve of the forearm supplies the

A

Skin on the medial side of the forearm

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80
Q

Intercostobrachial nerve supplies the

A

medial glenoid skin

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81
Q

Supratrochlear lymph nodes lie

A

Subcutaneously above the medial epicondyle

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82
Q

Supratrochlear lymph nodes drain

A

Ulnar side of forearm and hand

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83
Q

Infraclavicular lymph nodes lie

A

In the delto-pectoral groove under the mid-clavicle

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84
Q

Infraclavicular lymph nodes drain

A

The radial side of the upper limb

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85
Q

Actions of triceps

A

Extension of forearm

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86
Q

Triceps nerve supply

A

C6-8 Radial nerve

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87
Q

Course of the radial nerve

A

Runs with profunda brachii artery between long and medial heads of triceps into the posterior compartment where it lies in the spiral groove of the humerus at the midpoint. Next moves anterior and passes over the lateral epicondyle.

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88
Q

Radial nerve is easily damaged with what injury

A

Humeral shaft fractures

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89
Q

Elbow joint type

A

Synovial hinge joint

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90
Q

Bony articulations of elbow joint

Humeral capitulum –>

A

Radial head

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91
Q

Bony articulations of elbow joint

Trochlea of humerus –>

A

Trochlear notch of ulna

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92
Q

What does the Lateral collateral ligament of elbow look like and where does it run from

A

Fan like on the radial side from the epicondyle

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93
Q

Medial collateral ligament of elbow

A

3 bands to the coranoid process on the ulna

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94
Q

Annular ligament of the elbow

A

Surrounds the radial head attaching to the radial notch of the ulna. Allows radial rotation

95
Q

Elbow movements - Flexion (3)

A

140
Biceps
Brachialis
Brachioradialis

96
Q

Elbow movements - Extension (1)

A

0

Triceps

97
Q

Elbow movements - Pronation (2)

A

90
Pronator teres
Pronator quadratus

98
Q

Elbow movements - Supination (4)

A
90
Biceps
Supinator
Extensor pollicis longus
Extensor pollicis brevis
99
Q

A pathological increase in the carrying angle at the elbow causes

A

Ulnar nerve palsy

100
Q

Action of pronator teres (1)

A

Pronation of forearm

101
Q

Nerve supply of pronator teres

A

C6-7 Median nerve

102
Q

Action of flexor carpi radialis (2)

A

Flexion of wrist

Abduction of hand

103
Q

Nerve supply of flexor carpi radialis

A

C6-7 median nerve

104
Q

Action of flexor digitorum superficialis (3)

A

Flexion of middle phalanges at proximal interphalangeal joint
Flexion at metacarpophalangeal joint
Flexion at wrist joint

105
Q

Nerve supply of flexor digitorum superficialis

A

C7-T1 median nerve

106
Q

Action of palmaris longus (1)

A

Flexion of wrist

107
Q

Nerve supply of palmaris longus

A

C7-8 Median nerve

108
Q

Action of Flexor carpi ulnaris (2)

A

Flexion of wrist

Adduction of hand

109
Q

Nerve supply of flexor carpi ulnaris

A

C7-8 Ulnar nerve

110
Q

Action of Flexor digitorum profundus (2)

A

Flexion of distal phalanges

Flexion of wrist

111
Q

Nerve supply of flexor digitorum profundus

A

C8-T1 Median and ulna nerve

112
Q

Action of flexor pollicis longus (2)

A

Flexion of DP and PP of thumb

113
Q

Nerve supply of flexor pollicis longus

A

C8-T1 Median nerve

114
Q

Action of Pronator quadratus

A

Pronation of forearm

115
Q

Nerve supply of pronator quadratus

A

C8-T1 median nerve

116
Q

The brachial artery bifurcates into the

A

radial and ulnar arteries at the neck of the radius

117
Q

Radial artery surface markings

A

Begins in the cubital fossa
Passes inferolaterally deep to brachioradialis
Lies on the anterior surface of the radius in the distal forearm
Pulse felt at the wrist lateral to the tendon on flexor carpi radialis

118
Q

Ulnar artery surface markings

A

Begins in the cubital fossa
Passes deep and descends on flexor digitorum profundus with the ulnar nerve
Pulse felt at the wrist lateral to the tendon of flexor carpi ulnaris

119
Q

First branch of ulnar artery

A

common interosseous artery

120
Q

Palmar carpal arch wrist anastamosis located

A

at distal radioulnar joint

121
Q

Palmar carpal arch wrist anastamosis supplies

A

Deep palmar arch

122
Q

Dorsal carpal arch wrist anastamosis located

A

Over carpal bones

123
Q

Dorsal carpal arch wrist anastamosis supplies

A

Dorsal metacarpal arteries

124
Q

Deep veins of the anterior forearm called

A

Venae comitantes

125
Q

Superficial veins of anterior forearm - Cephalic vein location and course

A

From snuffbox along lateral to wrist
Anterolateral to forearm and arm
Follows deltopectoral groove to axillary vein

126
Q

Superficial veins of anterior forearm - Basilic vein location and course

A

Medial aspect of wrist and forearm

Passes deep in mid-arm to axillary vein

127
Q

Superficial veins of anterior forearm - Median cubital vein location and course

A

Communication between basilic and cephalic.

In cubital fossa

128
Q

Medial cutaneous nerve supplies

A

Skin of medial forearm

129
Q

Lateral cutaneous nerve supplies

A

Skin of distal 1/2 of lateral forearm

130
Q

Median nerve branches (4)

A

Anterior interosseous branch - supplies deep flexors
Palmar cutaneous branch - supplies skin of lateral palm
Terminates in the hand dividing into:
Recurrent branch - innervates thenar muscles
Palmar digital branch - palmar surface and fingertips of lateral 3.5 digits, lateral two lumbricals

131
Q

Ulnar nerve sits

A

Posterior to medial epicondyle at elbow
Passes between two gheads of carpi ularis to enter the forearm
Contues to lie lateral to tendon of FC ulnaris at wrist medial to the ulnar artery, passing superfically to flexor retinaculum medially

132
Q

Ulnar nerve supplies

A

Flexor carpi ulnaris

1/2 flexor digitorum profundus

133
Q

Actions of brachioradialis (1)

A

Flexion of forearm

134
Q

Nerve supply of brachioradialis

A

C5-7 Radial nerve

135
Q

Actions of extensor carpi radialis longus and brevis (2)

A

Extension of wrist

Abduction of hand

136
Q

Nerve supply of extensore carpi radialis longus and brevis

A

C6-8 radial nerve

137
Q

Actions of extensor digitorum (2)

A

Extension of MCPJ

Extension of wrist

138
Q

Nerve supply of extensor digitorum

A

C7-8 Posterior interosseous nerve, from radial

139
Q

Actions of extensor carpi ulnaris (2)

A

Extension of wrist

Adduction of hand

140
Q

Nerve supply of extensor carpi ulnaris

A

C7-8 Posterior interosseous nerve, from radial

141
Q

Actions of supinator (1)

A

Supination

142
Q

Nerve supply of supinator

A

C5-6 Radial nerve

143
Q

Actions of abductor pollicis longus (2)

A

Abduction of thumb

Extension of thumb at CMCJ

144
Q

Nerve supply of abductor pollicis longus

A

C7-8 Posterior interosseous nerve

145
Q

Actions of extensor pollicis longus (1)

A

Extension of thumb at MCPJ and IPJ (DP)

146
Q

Nerve supply of Extensor pollicis longus

A

C7-8 Posterior interosseous nerve

147
Q

Actions of extensor pollicis brevis (1)

A

Extension of thumb at IPJ (PP)

148
Q

Nerve supply of extensor pollicis brevis

A

C7-8 Posterior interosseous nerve

149
Q

Actions of Extensor indicis (1)

A

Extension of index finger

150
Q

Nerve supply of Extensor indicis

A

C7-8 Posterior interosseous nerve

151
Q

Medial boundary of anatomical snuffbox (1)

A

Extensor pollicis longus

152
Q

Lateral boundary of anatomical snuffbox (2)

A

Extensor pollicis brevis

Abductor pollicis longus

153
Q

Bones palpable in anatomical snuffbox (2)

A

Trapezium

Scaphoid

154
Q

Lateral attachment of extensor retinaculum (1)

A

Radius

155
Q

Medial attachments of extensor retinaculum (3)

A

Styloid process of ulna
Pisiform
Triquetrum

156
Q

Contents of extensor retinaculum from radial to ulnar side (9)

A
Abductor pollicis longus
Extensor pollicis brevis
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor pollicis longus
Extensore digitorum
Extensor indicis
Extensor digiti minimi
Exentsor carpi ulnaris
157
Q

Movements of the wrist joint - Flexion (6)

A
80
Flexor digitorum profundus
Flexor pollicis longus
Flexor digitorum superficilis
Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
158
Q

Movements of the wrist joint - Extension (5)

A
Extensor indicis
Extensor digitorum
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
159
Q

Movements of the wrist joint - Abduction (3)

A

Flexor carpi radialis
Extensor carpi radialis longus
Extensor carpi radialis brevis

160
Q

Movements of the wrist joint - Adduction (2)

A

Flexor carpi ulnaris

Extensor carpi ulnaris

161
Q

Structure of the palmar aponeurosis

A

Thick central layer of deep fascia attached to the distal border of the flexor retinaculum.
Triangle shaped from palmaris longus tendon. Distally splits into 4 slips at the bones of the fingers with the fibrous flexor sheaths.

162
Q

Function of the plamaraponeurosis

A

Protects underlying soft tissues and long flexor tensons

163
Q

Lateral attachments of the flexor retinaculum (2)

A

Scaphoid

Trapezium

164
Q

Medial attachments of the flexor retinaculum (2)

A

Pisiform

Hook of hamate

165
Q

Which muscles arise from the flexor retinaculcum

A

Thenar and hypothenar

166
Q

Structures that pass under the flexor retinaculum (9)

A

Median nerve (sits superficially)
Flexor pollicis longus
4 Flexor digitorum superficialis
4 Flexor digitorum profundus (deeper)

167
Q

Structures that pass over the flexor retinaculum

A

Ulnar artery and nerve - no arteries or veins inside in case of compression

168
Q

Actions of Abductor pollicis brevis (2)

A

Abduction of thumb

Helps in opposition

169
Q

Nerve supply of Abductor pollicis brevis

A

C8-T1 median nerve

170
Q

Actions of Flexor pollicis brevis (1)

A

Flexion of proximal phalanx of thumb

171
Q

Nerve supply of Flexor pollicis brevis

A

C8-T1 median nerve

172
Q

Actions of Opponens pollicis (1)

A

Opposition of thumb

173
Q

Nerve supply of Opponens pollicis

A

C8-T1 median nerve

174
Q

Actions of abductor digiti minimi (1)

A

Abduction of little finger

175
Q

Nerve supply of abductor digiti minimi

A

C8-T1 ulnar nerve

176
Q

Actions of Flexor digiti minimi (1)

A

Flexion of proximal phalnax of little finger

177
Q

Nerve supply of Flexor digiti minimi

A

C8-T1 ulnar nerve

178
Q

Actions of Opponens digiti minimi (1)

A

Opposition of little finger

179
Q

Nerve supply of Opponens digiti minimi

A

C8-T1 ulnar nerve

180
Q

Deep palmar arch is mainly from radial or ulna artery?

A

Radial

181
Q

Deep palmar arch feeds (5)

A
3 palmar metacarpal arteries (middle, ring , little)
Princeps pollicis (thumb)
Radialis indicis (index)
182
Q

Superficial palmar arch is mainly from radial or ulna artery?

A

Ulnar

183
Q

Superficial palmar arch feeds (4)

A

3 common palmar digital arteries (middle, ring, little)

Thenar muscles

184
Q

Clinical significance of damage to palmar arches

A

Need to tourniquet brachial artery because of dual supply

185
Q

Digital nerves - median supplies (5)

A

1st and 2nd lumbricals

Cutaneous supply to palmar skin of thumb, middle and 1/2 ring finger

186
Q

Digital nerve - Recurrent branch of median supplies (3)

A
Thenar muscles (Opponens pollicis, abductor pollicis brevis, flexor pollicis brevis)
Easily severed by minor laceration to thenar eminence causing paralysis of thumb
187
Q

Digital nerves - ulnar supplies (8)

A
Cutaneous supply to medial 1.5 fingers
3rd and 4th lumbricals
All dorsal interossei
Adductor pollicis
Hypothenar muscles (Flexor digiti minimi, abductor digiti minimi, opponens digiti minimi)
188
Q

Digital nerves surface anatomy

A

Palmar terminal branches of cutaneous supply that run down the lateral aspect of each digit on both sides.

189
Q

Lumbricals derive from

A

Flexor digitorum profundus

190
Q

Lumbricals attach to

A

Lateral extensor expansions of extensor digitorum and proximal phalanx

191
Q

Nerve supply of lumbricals

A
Medial 2 (little and ring) Ulnar nerve
Lateral 2 (index and middle) Median nerve
192
Q

Action of lumbricals (2)

A

Flex at MCP joint

Extend IP joint

193
Q

Attachments of interossei

A

Originates from lateral and medial surfaces of metacarpals. Attach into extensor hood and proximal phalanx of each finger

194
Q

Nerve supply of interossei

A

C8-T1 Ulnar nerve

195
Q

Actions of palmar and dorsal interossei

A

Palmar interossei ADuct
Dorsal interossei ABduct
PAD DAB

196
Q

Infection of synovial sheaths is called

A

Tenosynovitis

197
Q

Importance of thumb and little finger synovial sheath

A

Continuous with common flexor synovial sheath - infection spreads easily

198
Q

Index, middle and ring finger synovial sheaths

A

Are separate, confining infection to one digit. If neglected the proximal end of sheath can rupture and infection spreads into the midpalmar space

199
Q

Digital attachment of flexor tendon - flexor pollicis longus

A

Base of DP of thumb

200
Q

Digital attachment of flexor tendon - FDP

A

Base of DP of all 4 fingers

201
Q

Digital attachment of flexor tendon - FDS

A

Either side of bodies of MP of all four fingers

202
Q

Digital attachment of flexor tendon - Palmaris longus

A

Becomes flexor retinaculum and palmar aponeurosis

203
Q

Digital attachment of extensor tendon - Extensor pollicis longus

A

Base of DP of thumb

204
Q

Digital attachment of extensor tendon - Extensor pollicis brevis

A

Base of PP of thumb

205
Q

Digital attachment of extensor tendon - Abductor pollicis longus

A

Base of 1st MC

206
Q

Digital attachment of extensor tendon - Extensor digitorum

A

Base of DP and MP of all 4 fingers via extensor expansion

207
Q

Digital attachment of extensor tendon - Extensor digiti minimi

A

Extensor expansion of little finger

208
Q

Digital attachment of extensor tendon - Extensor indicis

A

Extensor expansion of index finger

209
Q

Dermatomes of upper limb

A

C4-T3
C4 Clavicle
C5 Lateral aspect upper arm
C6 Lateral aspect forearm and palmar thumb, dorsal thumb and index
C7 Palmar index and middle, dorsal middle
C8 ring and little down to midpoint of medial forearm
T1 Medial forearm
T2 Medial Upper arm
T3 axilla

210
Q

Nerves causing Shoulder Flexion (4)

A

Lateral and medial pectoral nerves
Musculocutaneous nerve
Axillary nerve

211
Q

Nerves causing Shoulder Extension (3)

A

Lower subscapular nerve
Throacodorsal nerve
Axillary nerve

212
Q

Nerves causing Shoulder Internal Rotation (6)

A

Lateral and Medial pectoral nerves
Throacodorsal nerve
Axillary nerve
Upper and lower subscapular nerve

213
Q

Nerves causing Shoulder External rotation (2)

A

Suprascapular nerve

Axillary nerve

214
Q

Nerves causing Shoulder Adduction (3)

A

Lateral and medial pectoral nerve

Throacodorsal nerve

215
Q

Nerves causing Shoulder Abduction (4)

A

Suprascapular nerve
Axillary nerve
Accessory nerve
Long thoracic nerve

216
Q

Nerves causing Elbow Flexion (2)

A

Musculocutaneous nerve

Radial nerve

217
Q

Nerves causing Elbow Extension (1)

A

Radial nerve

218
Q

Nerves causing Elbow Pronation (1)

A

Median nerve

219
Q

Nerves causing Elbow Supination (3)

A

Musculocutaneous nerve
Radial nerve
Posterior interosseous nerve

220
Q

Nerves causing Wrist Flexion (3)

A

Median nerve
Anterior interosseous nerve
Ulnar nerve

221
Q

Nerves causing Wrist Extension (2)

A

Posterior interosseous nerve

Radial nerve

222
Q

Nerves causing Wrist Abduction (2)

A

Median nerve

Radial nerve

223
Q

Nerves causing Wrist Adduction(3)

A

Ulnar nerve

Posterior interosseous nerve

224
Q

Downward traction injury to brachial plexus causes

A

C5-6 injury - Erb’s palsy / waiter’s tip

Pronation, medial rotation, wrist flexion (behind)

225
Q

Upward traction injury to brachial plexus causes

A

C8-T1 injury - Klumpke’s palsy

Claw hand, Horner’s syndrome

226
Q

Axillary nerve damage caused by

A

Surgical neck of humerus fracture or shoulder dislocation

227
Q

Axillary nerve damage causes

A

Loss of deltoid abduction and loss of sensation to regimental badge area

228
Q

Radial nerve damage caused by

A

Humeral shaft fracture

229
Q

Radial nerve damage causes

A

Loss of forearm extensors - wrist drop

Loss of sensation to anatomical snuffbox

230
Q

Ulnar nerve damage caused by

A

Medial epicondyle fracture or wrist laceration

231
Q

Ulnar nerve damage causes

A

Claw hand of ring and little fingers below elbow with small muscle wasting above elbow.
Loss of sensation to medial 1.5 digits and hand

232
Q

Median nerve damage caused by

A

Carpal tunnel syndrome or wrist laceration

233
Q

Median nerve damage causes

A

Weakness and wasting of thenar muscles. Loss of sensation to lateral palm and 2.5 digits.