𝕨𝕖𝕖𝕜 7 𝕖𝕝𝕓𝕠𝕨 𝕣𝕖𝕘𝕚𝕠𝕟

ANTERIOR

3 flexors

Olecranon process

Which enters the humeral olecranon fossa in extension; attachment for triceps brachii

Humero-ulnar joint

Anatomical name of elbow joint

POSTERIOR

Anconeus Supinator Deep branch of radial nerve

Trochlear notch

Articulates with the trochlea of the humerus, forming humeroulnar joint.

trochlea with grooves and medial and lateral lips

Articulates with the trochlear notch of the-ulna

3 flexors

Biceps brachii - supinated Brachialis - pronated position Brachioradialis - mid-prone anterolateral aspect

Cubital fossa

Boundaries SUPERIOR MEDIAL LATERAL FLOOR

Contents

Brachial artery Median nerve Biceps brachii tendon

LATERAL OF CUBITAL FOSSA

Brachioradialis

Mobile Wand of Three (elbow flexion)

Brachioradialis Extensor carpi radialis longus Extensor carpi radialis brevis

Superior/ Proximal radioulnar joint

Ligaments on superior radioulnar joint: Annular ligament

BICEPS BRACHII

Long Head (lateral) Short Head Elbow flexion (mover/agonist)

Type of bone in elbow and wrist

Long bone

MEDIAL OF CUBITAL FOSSA

Pronator Teres

ANTERIOR

Pronator teres Humeral Ulnar head Median nerve - not all impaired with pronation supination Forearm pronation Pronator quadratus Anterior interosseous branch of median nerve

LATERAL

Radial nerve

supinator crest

extending distally and slightly dorsally from the radial notch

SUPERIOR OF CUBITAL FOSSA

imaginary line connecting the medial and lateral epicondyles

ulnar tuberosity

just distal to the coronoid process

ulnar head

located at the distal end of the ulna

medial and lateral epicondyles

medial epicondyle: its a large bony protuberance, major palpable landmark on the medial side of the elbow. The ulnar nerve passes from the arm into the forearm around the posterior surface of the medial epicondyle. Lateral epicondyle: less prominent than the medial epicondyle.

Coronoid process

Together with the olecranon process receives the trochlea of the humerus.

Ulna

Type - long bone Hinge joint - uniaxial (flexion, extension)

Radius

Type: long bone Location: laterally

ROOF

deep fascia subcutaneous tissue skin

styloid process

projects distally from the postero-medial region of the distal ulna

Radial head

the rim of the radial head contacts the radial notch of the ulna, forming the proximal radioulnar joint FOREARM SUPINATION & PRONATION

fovea of radial head

this cartilage-lined concavity articulates with the capitulum of the humerus, forming the humeroradial joint

Lateral collateral ligament

> Apex > Base

Elbow joint

> Articulation > Joint capsule

FLOOR OF CUBITAL FOSSA

> BRACHIALIS > SUPINATOR

Olecranon bursa is also found in

> HUMERUS > SCAPULA > ULNA

Articulation

> Humeroradial joints > Humeroulnar joints

OLECRANON BURSA

> Lubricating device consisting of closed fibrous sac > Repeated trauma may lead to bursitis > Small subcutaneous bursa over the olecranon process of the ulna > STUDENT ELBOW - olecranon bursitis (inflammation)

Ligaments

> Medial collateral ligament > Anterior band > Posterior band > Transverse band

Olecranon fossa

> Receives the olecranon process during elbow extension. > Receive of flexion - receive is coronoid fossa and coronoid process, radial fossa, radial head

Annular ligament

> Ring-like ligament that hold the head of radius > Important to have stabilization with our lateral aspect of elbow > Holding of radial head to produce pronation and supination > Responsible for forearm pronation, supination

INTEROSSEOUS MEMBRANE

> Thin strong membrane uniting the radius and ulna > Fibers run distally and medially from radius to ulna > Attached to the interosseous borders (sharp edge) of radius and ulna

Humerus

> Trochlea with grooves and medial and lateral lips > Capitulum > Coronoid fossa > Radial fossa > medial and lateral epicondyles > medial and lateral supracondylar ridges > Olecranon fossa

Radio-ulnar joint

Joint of forearm

Elbow

Distal humerus > Proximal radius > Proximal ulna

Wrist joint

Distal radius Distal ulna

Anconeus

Elbow extension Radial nerve

BRACHIALIS

Elbow flexion

Capitulum

It will articulate with the head of the radius

Coronoid fossa

That will receives the coronoid process of the ulna when the forearm is flexed

Radial fossa

That will receives the radial head when bending the elbow

medial and lateral supracondylar ridges

The lateral supracondylar ridge is more pronounced than medial and is roughened for the attachment of muscles.

POSTERIOR

Triceps brachii Long Head Lateral Head Medial Head Elbow extension Nerve: radial nerve

Elbow extension

Trochlea, trochlear notch, capitulum

ulnar notch

accepts the ulnar head forming distal radioulnar joint

radial neck

bicipital tuberosity distal attachment for biceps brachii

radial notch

for the articulation of radial head