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Anatomy > Forearm/Elbow > Flashcards

Forearm/Elbow Flashcards

1
Q

Radius

A

Lateral long bone of forearm
Humeroradial joint
Superior radioulnar joint
Middle radioulnar joint
Inferior radioulnar joint
Radiocarpal joint

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2
Q

Radius - head

A

Expanded proximal end
Convex upper surface articulates with the humerus
Circular circumference articulates with the ulna

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3
Q

Radius - tuberosity

A

Projection from the upper shaft
Insertion of biceps brachii muscle

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4
Q

Radius - shaft

A

Triangular cross-section
Connects the two extremities

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5
Q

Radius - Interosseous border

A

Sharp medial crest
Attachment of the Interosseous membrane

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6
Q

Radius - ulnar notch

A

Depression on the medial aspect of the distal end
Articulates with the ulna

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7
Q

Radius - styloid process

A

Lateral projection from the distal end of the radius

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8
Q

Ulna

A

Medial long bone of forearm
Humerulnar joint
Superior radioulnar joint
Middle radioulnar joint
Inferior radioulnar joint
Ulnocarpal joint

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9
Q

Ulna - trochlea notch

A

Large, saddle-shaped notch in the proximal end of the bone
Articulates with the trochlea of the humerus

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10
Q

Ulna - coronoid process

A

Anterior, raised projection of the trochlea notch

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11
Q

Ulna - Olecranon

A

Elongation located proximally on the posterior surface of the ulna

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12
Q

Ulna - radial notch

A

Lateral to the trochlea notch
Articulates with the head of the radius

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13
Q

Ulna - Interosseous border

A

Sharp, lateral crest
Attachment of the Interosseous membrane

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14
Q

Ulna - styloid process

A

Palpable medial projection of the distal ulna

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15
Q

Humeroulnar joint

A

Bones - Humerus, trochlea. Ulna, trochlea notch
Synovial hinge joint
Flexion and extension
Olecranon process accommodated by the Olecranon (humerus) fossa

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16
Q

Humeroradial joint

A

Bones - Humerus, capitulum. Radius, head
Synovial hinge joint
Flexion and extension

17
Q

Proximal radioulnar joint

A

Bones - Radius, head. Ulna, radial notch
Synovial pivot joint
Allows rotation

18
Q

Proximal radioulnar joint - supernation

A

Pronator teres - rotates the head of the radius inside the annular ligament of the radius

19
Q

Proximal radioulnar joint - pronation

A

As the radius rotates it crosses over the ulna
Pronator teres - pulls the radius across the ulna

20
Q

Proximal radioulnar joint - radial collateral ligament

A

Supports joint capsule - helps improve structural integrity
Leaves the radius free to rotate
From the lateral epicondyle to the annular ligament of the radius

21
Q

Proximal radioulnar joint - ulnar collateral ligament

A

Supports joint capsule - helps improve structural integrity
Multiple bands
Anterior band - cord like
Posterior band - fan like
Oblique band
Heavier and firmer attachment

22
Q

Proximal radioulnar joint - annular ligament

A

Holds the head of the radius against the radial notch of the ulna
Attached to the radial collateral ligament
Not attached to radius - allows radius to rotate
Some instability

23
Q

Distal radioulnar joint

A

Articular disc - Fibrocartilage, hyaline cartilage, flexible. From ulnar styloid process across to the head of the radius
Ulna articulates with the articular discs
Radius articulates with the bones of the hand
Palmer radioulnar ligament
Dorsal radioulnar ligament

24
Q

Nerve supply

A

Median nerve
Ulnar nerve
Radial nerve
Musculocutaneous nerve

25
Q

Blood supply

A

Brachial artery
Axillary artery
Deep posterior branch of brachial artery

26
Q

Deep extensors

A

Supinator
Extensors indicis
Extensor pollicis longus
Extensor pollicis brevis
Abductor pollicis longus

27
Q

Superficial extensors

A

Anconeus
Extensor carpi ulnaris
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor digitorum
Extensor digiti minimi

28
Q

Deep flexors

A

Brachioradialis
Pronator quadratus
Flexor digitorum profundus
Flexor pollicis longus

29
Q

Superficial flexors

A

Pronator teres
Flexor carpi radialis
Flexor carpi ulnaris
Flexor digitorum superficialis
Palmaris longus

Anatomy (9 decks)

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