Hand

Question 0

Carpal tunnel contents

Answer 0

9 tendons , 1 nerve

Flexor pollicis longus, flexor digitorum superficialis, and flexor digitorum profundus.

Question 1

Carpal tunnel formed by…

Answer 1

Passageway deep to the flexor retinaculum between tubercles of the scaphoid and the trapezoid bones on the lateral side. And the pisiform and hook of hamate medially.

Question 2

Radial nerve

Answer 2

Terminal branches, superficial and deep arise in the cubital fossa

Question 3

Superficial branch of radial nerve

Answer 3

Is entirely sensory

It pierces the deep fascia near the dorsum of the wrist to supply the skin and fascia over the lateral 2/3 of the dorsum of the hand, the dorsum of the thumb, and the proximal parts of the lateral one and a half digits.

Question 4

Augmenting movement at the wrist joint

Answer 4

The two rows of carpals glide on each other; in addition, each bone glides on those adjacent to it

Question 5

Proximal phalanges articulate with

Answer 5

Metacarpal bones at the metacarpophalangeal joints

Question 6

The joint between proximal and middle phalanx is the

Answer 6

Proximal interphalangeal joint

Question 7

Ulnar nerve and artery travel through what canal to get to the wrist?

Answer 7

Guyons canal

Anterior to the flexor retinaculum between the pisiform and the hook of hamate

Question 8

Fibrous digital sheaths

Answer 8

Synovial sheaths that enclose the flexor tendons as they pass along the palmar aspect of each digit. Fiction similar to retinaculum

Question 9

What kind of joint is Metacarpophalangeal ?

Answer 9

Condyloid synovial

Question 10

Metacarpophalangeal joint reinforced posteriorly by? Anteriorly?

Answer 10

Posteriorly by dorsal hood

Anteriorly by volar plates

Question 11

Mcp joint collateral ligaments

Answer 11

Pass posterior to joint axis for flexion and extension

Relaxed when in flexion… If immobilized for long cant make fist

Question 12

Blood supply for metacarpophalangeal joint

Answer 12

Deep digital arteries arising from superficial palmar arches

Question 13

Interphalangeal joint is a ____ joint

Answer 13

Hinge synovial joint

Question 14

Ip joint ligaments

Answer 14

Volar plate
Lateral and accessory collateral ligs

Taut in 25 degrees flexion

Joint blood supply via digital arteries

Question 15

Thumb carpometacarpal joint is a ____ joint

Answer 15

Synovial Saddle joint

Lots of mobility …little stability

Question 16

5 ligaments of the cmc thumb joint

Answer 16

Radial and ulnar collaterals
Anterior and posterior obliques
Intermetacarpal

Question 17

Thumb mcp joint is a _____ joint and what ligaments

Answer 17

Hinge joint

Collateral and palmar ligaments

Question 18

Ulnar artery enters wrist where?

Answer 18

Guyons canal lateral to ulnar nerve

Anterior to flexor retinaculum

Question 19

Ulnar artery gives rise to …

Answer 19

Deep and superficial palmar branch

Superficial portion contributes to superficial palmar arch

Question 20

Radial artery enters wrist?

Answer 20

By curving dorsally around scaphoid and trapezium in the floor of anatomy snuff box

Question 21

Extensor mechanism

Answer 21

Complex network of ligamentous and muscular units that coordinate to produce extension of the digits

Question 22

Oblique retinacular ligament

Answer 22

Is taut during flexion of dip…hence it pulls pip into flexion

Part of extensor mechanism

Question 23

Mallet finger

Answer 23

Basketball jam finger example

Torn extensor ligaments so dip is stuck in flexion

Question 24

Dupuytren contracture

Answer 24

Palmar fascia thickens and pulls finger into flexion

Question 25

Digital tenovaginitis stenosans (trigger finger)

Answer 25

Thickened annular lig of fibrous digital sheath due to repetitive overuse

Can flex but have to manually extend it

Question 26

Palmar aponeurosis

Answer 26

Part of deep fascia of palm
Covers the soft tissue and overlies the long flexor tendons
The proximal end is continuous with flexor retinaculum and palmaris longus tendon
Distally it forms four longitudinal digital bands which attach to bases of proximal phalanges, where they become continuous with the fibrous digital sheaths

Question 27

Acting together the dorsal and palmar interossei and lumbricals produce

Answer 27

Flexion at the metacarpophalangeal joint and extension of the ip joints….. L

Question 28

The common flexor and digital sheaths enable the tendons

Answer 28

To slide freely past each other during movements of the fingers

Question 29

Ulnar artery of palm

Answer 29

Gives rise to the deep (palmar branch) and then continues superficial to the long flexor tendons, where it is the main contributor to the superficial palmar arch

Question 30

Superficial palmar arch gives rise

Answer 30

To three common palmar digital arteries

Each common palmar d.a. Divides into a pair of proper palmar digital arteries

Question 31

The radial artery curves dorsally

Answer 31

Around the scaphoid and trapezium in the floor of the a.s.b. and enters palm by passing the heads of the first interossei muscle

Question 32

The radial artery ends by anastomosing with the deep branch of the ulnar artery to form the …

Answer 32

The Deep palmar arch….formed chiefly by the radial artery

Question 33

Extensor expansion or hood is a…

Answer 33

Triangular tendinosis aponeurosis wrapping around dorsum and sides of met heads and base proximal phalanx

Question 34

ED is forming hood splits

Answer 34

Into median band( base of middle phalanx) and 2 lateral bands (base distal phalanx)

Question 35

Hood is anchored on the side by…

Answer 35

Palmar ligament

Question 36

Tendons of interossei and lumbricals join

Answer 36

Lateral bands

Question 37

ORL is taut during flexion of ___ and this pulls the ____ into flexion.

Answer 37

DIP

PIP

Question 38

Extending the ____ joint pulls ____ via ORL into extension

Answer 38

PIP

DIP