Muscles Of The Forearm Flashcards
Olecranon fits in at?
Olecranon fossa
Capitulum articulates with?
Head of radius
Radios are joints are what kind of joints?
Synovial pivot, helping with supination and pronation
Uniaxel
Which ligaments in the elbow joint?
Annular ligament- surrounding head of radius
Ulnar collateral
Radial collateral
Pollicis refers to?
Thumb
Superficial muscles flexor origin?
Pronator teres
Flexor carpi radialis
Palmaris longus- long tendon/ not always present
Flexor carpi ulnaris
Intermediate layer?
Flexor digitorum superficialis
Deep layer flexors?
Flexor digitorum profundus
Flexor pollicis longus
Pronator quadratus
Superficial layer extensor?
Extensor carpi radialis longus/ brevis
Extensor digitorum
Extensor digiti minimi
Brachiradialis
Aconeus
What does anconeus do?
Stabilise elbow
Anatomical snuff box?
Abductor pollicis longus
Extensor pollicis longus
Extensor pollicis brevis
Abduction, radial deviation?
Flexor carpi radialis
Extensor carpi radialis (longus and brevis)
Adduction, ulnar radiation?
Flexor carpi ulnaris
Extensor carpi ulnaris
What prevents bowing of tendons?
Extensor/ Flexor retinaculum
Flexor retinaculum is called?
Transverse carpal ligament
Flexor digitorum profundus passes through?
Two slips of flexor digitorum superficialis
Cubital fossa borders and contents?
Medial border of brachioradialis
Lateral border of pronator teres
Biceps tendon
Radial nerve
Brachial artery
Median nerve
Why should you be careful when doing venepuncture of median cubital vein?
Brachial artery under aponeurosis
Anterior
Deep complex of flexor compartment
Ulnar nerve supplies?
Flexor carpi ulnaris flexor digitorum profundus
Medial half
Intrinsic muscles of hand
Sensory- medial side of hand 1/2 d4 and d5
Thenar muscles are supplied by?
Median nerve
Musculocutaneous pierces?
Coracobrachialis
In the superficial layer of the forearm what are the muscles?
Pronator teres
Flexor carpi radialis
Palmaris longus
Flexor carpi ulnaris
What is golfers elbow?
Inflammation of tendons at medial epicondyle due to overuse and excessive gripping
Attachment of superficial flexors?
Medial epicondyle to metacarpals and pisiform and hamate
Flexor digitorum superficialis origin and insertion?
Medial epicondyle to middle phalanges
Deep layer muscles?
Flexor pollicis longus
Flexor digitorum profundus
Pronator quadratus
Origin and insertion of flexor pollicis longus?
Origin- anterior surface of radius and interosseous membrane
Insertion- palmar surface of distal phalanx of thumb
Flexor digitorum profundus origin and insertion?
Ulna anterior surface and interosseous membrane to palmar surface of distal phalanges 2-5
Superficial layer of extensors in forearm?
Extensor carpi radialis brevis and longus
Extensor digitorum
Extensor digitorum minimi
Extensor carpi ulnaris
Origin and insertion of extensor carpi radialis brevis and longus?
Supracondylar ridge to base of 2nd metacarpals
What is tennis elbow?
Lateral epicondylitis
Overuse and forceful extension
Aconeus role insertion and origin?
Lateral epicondyle of humerus
Lateral surface of olecranon
Stabilises elbow
Origin and insertion of brachioradialis?
Lateral supacondylar ridge to styloid process of radius
Flexor when halo pronated
Anatomical snuff box?
Abductor pollicis longus
Extensor pollicis brevis
Extensor pollicis longus
Abduction radial deviation is by?
Flexor carpi radialis
Extensor carpi radialis brevis and longus
Adduction or ulnar deviation is done by?
Flexor carpi ulnaris
Extensor carpi ulnaris
Muscles of supination?
Biceps brachii
Supinator
What is role of extensor retinaculum?
Prevents bowing of tendons
Separates tendons into compartments
Median nerve lies between?
Fdp and fds
Branch of median nerve is?
Anterior interosseous nerve to deep flexors
Median nerve supplies?
Anterior compartment of muscles motor except flexor carpi ulnaris, medial pastry of fdp
Lateral hand muscle
Sensory;lateral palm d1 D2 d3 1/2 d4
Radial nerve branches?
- Superficial- under brachioradialis winds to dorsum of hand
- Deep branch- posterior interosseous nerve motor. Passes through supiantor to enter extensor compartment
What process is on ulna?
Coronoid
Brachioradialis is from?
Supracondylar ridge to the styloid process of the radius
Muscles involved in supination?
Supinator
Biceps brachii
Muscles involved in pronation?
Pronator teres
Pronator quadratus
Median nerve sits between?
Flexor digitorum profundus
Flexor digitorum superficialis
Median nerve gives off a branch?
Anterior interosseous nerve- deep flexors
Carpal tunnel syndrome associated with?
Pregnancy obesity and pregnancy
Ulnar nerve has what syndrome?
Cubital tunnel syndrome
Deep branch of radial nerve?
Posterior interosseous nerve- motor, passes through supinator