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