Flashcards
Hand anatomy
Cards in this deck (13)
- 1Carpal bones'so long to pinky here comes the thumb'
scaphoid (1), lunate (2) triquetrum (3), pisiform (3 - superficial to triquetrum), hamate (7), capitate (6) , trapezoid (5), trapezium (4)
the flexor retinaculum attaches between the pisiform and tubercle of trapezium - 2Which carpal bones are in the proximal row? going lateral to medialscaphoid, lunate, triquetrum, pisiform
- 3Which carpal bones are in the distal row? medial to lateralhamate, capitate, trapezoid, trapezium
- 4Which bones make up the radio-carpal joint?Scaphoid + lunate articulate with the distal radius and styloid process of radius to form the wrist joint.
- 5Scaphoid fractureCommonest carpal bone fracture from fall on outstretched hand
wrist and snuffbox pain
At risk of avascular necrosis from retrograde blood supply - dorsal carpal branch of radius and superficial palmar arch - 6Boundaries of the anatomical snuffbox medial lateral proximal floor roofextensor pollicis longus
extensor pollicis brevis + abductor pollicis longus
styloid process of radius
scaphoid and trapezoid bones
skin - 7Contents of anatomical snuffbox1. radial artery
2. cephalic vein (Emma's favourite vein!)
3. superficial branch radial nerve - 8Hand muscles - intrinsic how many groups of intrinsic hand muscles are there?5
1. Thenar muscles
2. Hypothenar
3. Lumbricals
4. Interossei
5. Other palm ones - 9Thenar muscles / thenar eminence all innervated by the median nerve1. Opponens pollicis - most lateral, opposition = medial rotation + flexion of thumb
2. Abductor pollicis brevis - middle, superficial to OP, abduction.
3. Flexor pollicis brevis - most medial/distal, flexes MCP joint. - 10Hypothenar muscles - all innervated by ulnar nerve1. Opponens digiti minimi - deepest muscles - rotates the little finger metacarpal towards palm = opposition
2. Abductor digiti minimi - most superficial, abduction
3. Flexor digiti minimi brevis - flexes MCP joint of little finger - 11Lumbricals4 - associated with each finger
link extensor and flexor tendons
FLEX AT MCP JOINT, EXTEND AT IP JOINTS
Lateral 2 - median
Medial 2 - ulnar - 12Dorsal and Palmar interossei DAB PAD4 dorsal 3 palmar
dorsal - abduct fingers at MCP joints, ulnar
palmar - adduct fingers at MCP joints, ulnar - 132 other palm muscles both innervated by ulnar nerve1. Palmaris brevis - very thin and superficial to hypothenar muscles, wrinkles skin of hypothenar eminence, deepens curvature to improve grip
2. Adductor pollicis - triangular, has 2 heads, radial artery passes superiorly between 2 heads forming deep palmar arch, a thumb adductor
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- Medicine (Anatomy) Flashcards on Hand anatomy , created by Maisy Titterton on 11/12/2019.
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- Maisy Titterton
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