Elbow, wrist and hand Flashcards

1
Q

Function of the elbow

A

to shorten the length of the arm
to allow the hand to be moved towards and away from the body
holds elbow at 90 degrees

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2
Q

Bones that make up the elbow?

A

Humerus
Radius
Ulna

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3
Q

Humero-ulnar joint
Bones
Joint type
Movement

A

Bones - humerus and ulnar
Joint type - hinge
Movements - flexion/extension

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4
Q

Humero-radial joint
Bones
Joint type
Movement

A

Bones: humerus and radius
joint type: hinge
Movements: flexion/extension

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5
Q

Where is the synovial membrane for the elbow attached?

A

Attaching to the articular margins of the humerus and ulna lining the joint capsule, reflected onto the humerus to cover the coronoid and radial fossae anteriorly and the olecranon fossa posteriorly.

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6
Q

What is the posterior fat pad of the elbow

A

the visualisation of a lucent crescent of fat located in the olecranon fossa on a true lateral view of an elbow joint with the elbow flexed ata right angle indicating and elbow joint effusion.

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7
Q

Medial collateral ligament of the elbow.

A
  • Runs from medial epicondyle of humerus to the medial side of coranoid process and olecranon process
  • Between humerus and ulna
  • Prevents side ways movement
  • Resist varus and valgus strain
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8
Q

Lateral collateral ligament of the elbow

A

Attaches proximally to the lateral epicondyle and distally to the lateral ulna and annular ligament

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9
Q

Annular ligament of elbow

A

Encompasses radial head at the radial notch and hold it against the ulna

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10
Q

Interosseous membrane of the elbow

A

o Broad flat membrane is located between the radius and ulna for most of their length
o Connective fibres between ulna and radius

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11
Q

Ligaments of the elbow

A

medial collateral ligament
lateral collateral ligament
annular ligament

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12
Q

Elbow flexors muscles

A

Bicep brachia short head
bicep brachia long head
brachialis
brachioradialis

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13
Q
Bicep brachii (short head)
origin, insertion, nerve supply. main actions
A

Origin: coracoid process of the scapula
Insertion: Radial tuberosity
Nerve supply: Musculocutaneous nerve
main actions: flexion, supination, abduction, internal rotation

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14
Q
Bicep brachii (long head)
origin, insertion, nerve supply. main actions
A

Origin: Supraglenoid tubercle of the scapula
Insertion: Radial tuberosity
Nerve supply: musculocutaenous nerve
Main actions: flexion, supination, abduction, internal rotation

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15
Q

Brachialis

origin, insertion, nerve supply. main actions

A

origin: Distal anterior surface of the humerus
insertion: Coranoid process of the ulna
nerve supply: musuloccuntaneous nerve
main actions: Flexion,

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16
Q

Brachioradialis

origin, insertion, nerve supply. main actions

A

origin: distal lateral supracondylar ridge of the humerus and the lateral intermuscular septum
insertion: Lateral part of the styloid process of the radius
nerve supply: radial nerve
main actions: Flexion, Supination, pronation

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17
Q

Elbow extensor muscles

A
Tricep Brachii (medius)
Tricep brachii (long head)
Tricep brachia (lateral head)
Anconeus
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18
Q
Tricep Brachii (medial head)
origin, insertion, nerve supply. main actions
A

origin, Posteromedial surface of the distal humerus below the radicle groove and the medial intermuscular septum
insertion, Olecranon process of the ulna via the triceps tendon
nerve supply, radial nerve
main actions, extension

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19
Q
Tricep brachii (long head)
origin, insertion, nerve supply. main actions
A

origin, Infraglenoid tubercle of the scapula
insertion, Olecranon process of the ulna via the triceps tendon
nerve supply, Radial never
main actions extension, adduction

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20
Q
Tricep brachii (lateral head)
origin, insertion, nerve supply. main actions
A

origin, Posterolateral surface of the distal humerus below the radicle groove and the lateral intermuscular septum
insertion, Olecranon process of the ulna via the triceps tendon
nerve supply. radial nerve
main actions, extension, adduction

21
Q

Anconeus

origin, insertion, nerve supply. main actions

A

origin, Lateral epicondyle of the humerus
insertion, Lateral side of the olecranon and superior part of the posterior ulna distally
nerve supply. Radial nerve
main actions, extension

22
Q

Supinators of the elbow

A
bicep brachii (short head)
bicep brachii (long head
supinator
23
Q

Supinator

origin, insertion, nerve supply. main actions

A

origin, Supinator crest and the fossa of the ulna
insertion, Lateral one-third of the proximal radius
nerve supply. radial nerve
main actions, supination

24
Q

Pronators of the elbow

A

pronator quadratura

pronator teres

25
Q

Pronator Quadratus

origin, insertion, nerve supply. main actions

A

origin, Anterior surface of the distal ulna
insertion, Anterior surface of the distal radius
nerve supply. median nerve
main actions, pronation

26
Q

Pronator teres

origin, insertion, nerve supply. main actions

A

origin, Medial epicondyle of the humerus. the coronoid process of the ulna
insertion, Lateral radius distal to the insertion of the supinator muscle
nerve supply. Median nerve
main actions, Flexion, Pronation

27
Q

Bones of the hand

A
distal phalanges
intermediate phalange
proximal phalanges
metacarpals
carpals
trapezium
trapezoid
scaphoid
hamate
pisiform
triquetrum
lunate
28
Q

Joint of the hand

A
Radialcarpal joint
mid carpal joint
carpometacarpal joint (CMC)
Metacarpophalangeal (MCP)
Proximal Interphalangeal joint (PIP)
Distal interphalangeal joint (DIP)
29
Q

Ligaments of radio carpal and metacarpal

A
Volar radio crupal ligaments
dorsal radio carpal ligament
scapholunate interosseous ligament
lunotriquetral ligament
Doral inter carpal ligament
30
Q

ligaments of the carpometacarpal joints (CMC)

A

transverse MC joint
volar longitudinal ligaments
dorsal longitudinal ligaments

31
Q

Metacarpophalgeal joint ligaments

A

proper collateral ligament
accessory collateral ligaments
deep transverse ligament
volar plate

32
Q

Range of movements at the wrist

A

flexion 0-85
extension 0-80
radial deviation 0-20
ulnar deviation 0-45

33
Q

Extrinsic finger muscles

A
plexus polliis longus
abductor pollicis longus
extensor pollicis longus
extensor pollicis brevis
extensor indicia
extenso5 digiti minimi
34
Q

Flexor pollicis longus

origin, insertion, nerve supply, main actions

A

origin, Interosseous membrane and the anterior surface of the radius
insertion, Palmar side of the distal phalanx of the 1st
nerve supply, median nerve
main actions, Abduction of wrist, Flexion of CMC/MCP/IP

35
Q

Abductor pollicis longus

origin, insertion, nerve supply, main actions

A

origin, Middle one third of the posterior surface of the radius and ulna
insertion, Base of the 1st metacarpal bone at the radial side
nerve supply, radial nerve
main actions, Abduction RC/CMC of 1st

36
Q

Extensor pollicis longus

origin, insertion, nerve supply, main actions

A

origin, Posterolateral surface of the ulna
insertion, Base of the distal phalanx of the 1st
nerve supply, Posterior interosseous nerve
main actions, Extensions of wrist, Adduction of CMC of 1st , Extension of MCP/IP of 1st

37
Q

Extensor pollicis brevis

origin, insertion, nerve supply, main actions

A

origin, Posterior surface of the distal radius
insertion, Base of the proximal phalanx of the 1st
nerve supply, Posterior interosseous nerve
main actions, Abduction of RC, Extensions of CMC/MCP of 1st

38
Q

Extensor indicia

origin, insertion, nerve supply, main actions

A

origin, Posterlatral surface of the ulna and the interosseous membrane
insertion, Tendons join the extensor digitorum tendon to 2nd digit and insert into the posterior digital expansion
nerve supply, posterior interosseous nerve
main actions, Extension of wrist, Extension of MCP/PIP/DIP of 2nd

39
Q

Extensor digiti minimi

origin, insertion, nerve supply, main actions

A

origin, Lateral epicondyle of the humerus
insertion, Doral digital expansion and the extensor digitorum tendon of the 5th
nerve supply, Posterior interosseous nerve
main actions, Extension of wrist, Abduction of MCP/PIP/DIP of 5th, Extension of MCP/PIP/DIP of 5th

40
Q

intrinsic finger muscles

A

abductor pollicis brevis
flexor pollicis brevis
opponens pollicis
adductor pollicis oblique

41
Q

Abductor pollicis brevis

origin, insertion, nerve supply, main actions

A

origin, Scaphoid and trapezium brevis
insertion, Base of the proximal phalanx of the 1st digit
nerve supply, median nerve
main actions, abduction of CMC of 1st

42
Q

flexor pollicis brevis

origin, insertion, nerve supply, main actions

A

origin, Superficial head: the flexor retinaculum
Deep head: the capitate and trapezium bones
insertion, Base of the proximal phalanx of the 1st
nerve supply, median nerve
main actions, Flexion of CMC/MCP of 1st

43
Q

Opponens pollicis
flexor pollicis brevis
origin, insertion, nerve supply, main actions

A

origin, Trapezium and the flexor retinaculum
insertion, Radial margin of the shaft of 1st metacarpal bone
nerve supply, median nerve
main actions, opposition of then CMC

44
Q

adductor pollicis oblique

origin, insertion, nerve supply, main actions

A

origin, Capitate bones, the bases of the 2nd and 3rd metacarpal bones
insertion, Base of the proximal phalanx of the 1st
nerve supply, ulnar nerve
main actions, Adduction of CMC of 1st, Flexion of MCP

45
Q

hypothenar muscles in the hand

A

abductor digiti minimi
flexor digiti minmi
opponens digiti minimi

46
Q

abductor digiti minimi

origin, insertion, nerve supply, main actions

A

origin, Pisiform bone
insertion, Base of the 5th proximal phalanx on the ulnar side
nerve supply, Ulnar Nerve
main actions, Flexion of 1st, Extension of PIP/DIP

47
Q

flexor digiti minimi

origin, insertion, nerve supply, main actions

A

origin, Hook of hamate and flexor retinaculum
insertion, Base of 5th proximal phalanx
nerve supply, ulnar nerve
main actions, Flexion at CMC/MCO of 5th

48
Q

opponens digiti minimi

origin, insertion, nerve supply, main actions

A

origin, Hook of the hamate and the flexor retinaculum
insertion, Ulnar margin of the 5th metcarpal bone
nerve supply, Ulnar nerve
main actions, Opposition of 5th

49
Q

interosseous muscles of the hand

A
first palmar interosseous
second palmar interosseous
third palmar interosseous
second dorsal interosseous
third dorsal interosseous
fourth dorsal interosseous