P3 ANATOMY Flashcards by Fatma Mutar

which bone is stable & which is movable in pronation

ulna > stable
Radius > movable

How well did you know this?

Not at all

Perfectly

how many carpals bone are there
name them

8
1- scaphoid
2- trapezium
3- trapezoid
4- lunate
5- pisiform
6- capitate
7- hamate
8- triquetrum

How well did you know this?

Not at all

Perfectly

which carpal bone is the largest

capitate

How well did you know this?

Not at all

Perfectly

finger that has only proximal & distal phalanges

thumb

How well did you know this?

Not at all

Perfectly

how many metacarpals are there

How well did you know this?

Not at all

Perfectly

how many phalanges are there

How well did you know this?

Not at all

Perfectly

joint type in DIP & PIP

hinge synovial

How well did you know this?

Not at all

Perfectly

type of joint in CM of thumb

saddle

How well did you know this?

Not at all

Perfectly

from lateral to medial mention the superficial group of flexors

Pronator teres.
Flexor carpi radialis.
Palmaris longus.
Flexor carpi ulnaris.

How well did you know this?

Not at all

Perfectly

flexor muscles arise from

medial epicondyle

How well did you know this?

Not at all

Perfectly

extensor muscles arise from

lateral epicondyle

How well did you know this?

Not at all

Perfectly

a flexor muscle that does not cross wrist joint

pronator teres

How well did you know this?

Not at all

Perfectly

action of pronator teres

pronation of forearm especially during flexion of elbow joint.

How well did you know this?

Not at all

Perfectly

action of flexor carpi radials

Flexes and abducts hand at the wrist joint

How well did you know this?

Not at all

Perfectly

action of palmaris longus

flexion of the hand at wrist joint.

How well did you know this?

Not at all

Perfectly

action of flexor carpi ulnaris

flexion and adduction of the hand at wrist joint

How well did you know this?

Not at all

Perfectly

action of Flexor digitorum superficialis

lexion of MP and proximal IP joints of
medial 4 fingers.
Helps of flexion of wrist joint.

How well did you know this?

Not at all

Perfectly

innervation of superficial & intermediate groups

median nerve

How well did you know this?

Not at all

Perfectly

nerve that innervates flexor carpi ulnaris

ulnar nerve

How well did you know this?

Not at all

Perfectly

lateral 1/2 of FDP is innervated by

ant. inter-osseous nerve

How well did you know this?

Not at all

Perfectly

middle 1/2 of FDP is innervated by

ulnar nerve

How well did you know this?

Not at all

Perfectly

action of FDP

Flexion of MP, proximal IP & distal IP (all)
joints of medial 4 fingers.
Helps in flexion of wrist joint

How well did you know this?

Not at all

Perfectly

action of flexor pollicis longus

lexion of MP and IP (all)
joints of the thumb.

How well did you know this?

Not at all

Perfectly

action of pronator quadratus

Pronation of forearm at radioulnar joints.

How well did you know this?

Not at all

Perfectly

Thickened band of deep fascia bridges over the carpal groove

FLEXOR RETINACULUM

thickened band of deep fascia bridges over the carpal groove transforming it into

carpal tunnel.

FLEXOR RETINACULUM medial attachments

pisiform and hook of hamate.

FLEXOR RETINACULUM lateral attachments

scaphoid and trapezium.

CONTENTS OF CARPAL TUNNEL

- median nerve - 4 FDP - 4 FDS - 1 flexor pollicis longus

nerve compressed in carpal tunnel syndrome

median nerve

Number of muscle in post. Compartment / extensors

Origin of all extensor muscles

lateral epicondyle

Extensor Muscles of superficial group

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

Action of Brachioradialis.

Flexes forearm especially in midprone position. Initiation of pronation and supination.

Action of Extensor carpi radialis longus.

Extends wrist joint and abducts hand.

action of Extensor carpi radialis brevis

Extends wrist joint and abducts hand.

action of Extensor digitorum

Extends MP, proximal IP and distal IP joints of medial 4 fingers. Extends the wrist.

action of Extensor digiti minimi

Extends all joints of little finger. Extends wrist joint.

action of Extensor carpi ulnaris

Extends wrist joint and adducts the hand.

action of Anconeus

Extends elbow joint.

mention from lateral to medial extensor muscles of deep group

1- Abductor pollicis longus. 2. Extensor pollicis brevis. 3. Extensor pollicis longus. 4. Extensor indices. 5. Supinator.

action of Abductor pollicis longus

Abduction of thumb at CM joint.

action of Extensor pollicis brevis

extension of thumb at CM and MP joints.

Action ofExtensor pollicis longus

Extends the thumb at CM, MP and IP joints.

Action of Extensor indicis

Extends index finger at MP, proximal IP, and distal IP joints. Extend wrist.

action of Supinator

Supinates the forearm

innervation of Brachioradialis, extensor carpi radialis longus and anconeus

radial nerve

rest of extensors are supplied by

POSTERIOR INTEROSSEUS NERVE.

Thickened band of deep fascia on the back of wrist joint.

EXTENSOR RETINACULUM

Medial attachment of EXTENSOR RETINACULUM

triquetrum and pisiform bones.

lateral attachment of EXTENSOR RETINACULUM

lower part of anterior border of the radius.

Muscles of supination

Biceps brachii ,Supinator

Muscles of pronation

Pronator teres. Pronator quadratus.

lateral boundaries of anatomical snuff box

tendons of abductor pollicis longus and extensor pollicis brevis.

Medial boundaries of anatomical snuff box

extensor pollicis longus tendon

Contents of anatomical snuff box

radial art. radial nerve cephalic vein

action of Palmaris brevis

Wrinkles skin and deepens hollow of the palm, as in cupping of the hand, thereby improve the grip

Triangular thick band of deep fascia in the middle of the palm of hand.

PALMAR APONEUROSIS

clinical significance of PALMAR APONEUROSIS is seen in

Dupuytren’s contracture

mention THENAR MUSCLES

Abductor pollicis brevis 2. Flexor pollicis brevis 3. Opponens pollicis 4. Adductor Pollicis

Movements of thumb

- aduction - abduction - flexion - extension - opposition - reposition

mention HYPOTHENAR MUSCLES

1-Abductor digiti minimi 2. Flexor digiti minimi 3. Opponens digiti minimi

PALMAR INTEROSSEI MUSCLES action

Adducts 2nd, 4th and 5th fingers (PAD) towards the axis

DORSAL INTEROSSEI MUSCLES action

Abducts 2nd - 4th fingers (DAP) from the axis.

action of LUMBRICAL MUSCLES

together with palmar and dorsal interossei, flex digits at MCP joints and extend IP joints (writing position).

Intrinsic muscles are innervated by

deep branch of ulnar nerve

INTRNISIC MUSCLES OF THE HAND exception for the innervation by deep ulnar nerve are innervated by

median nerve

Is triangular fibrous sheath located in the dorsum of proximal phalanx.

EXTENSOR EXPANSION

FASCIAL COMPARTMENTS of the hand

. Thenar compartment contains 3 thenar muscles. 2. Hypothenar compartment: contains 3 hypothenar muscles. 3. Central compartment: long flexor tendons and lumbricals.

2 spaces of the hand are

thenar space mid - palmar space

Superficial Palmar Arch is mainly formed by

cont. of ulnar art.

branches of Superficial Palmar Arch

3 Common palmar digital arteries. Each of them divides into 2 Proper palmar digital arteries which run along the sides of 2nd – 4th fingers.

Deep Palmar Arch is mainly formed by

Direct continuation of radial artery

branches of Deep Palmar Arch

3 palmar metacarpal arteries. Princeps pollicis artery. Radialis indicis artery.

Identify the deformity & the nerve injury