Transcript BONES OF UPPER EXTREMITY

BONES OF UPPER
EXTREMITY
Sternum

Manubrium:
Sternal (jugular) notch
Clavicular and costal facets
Sternal angle (of Louis):
Marks location of second ribs.

Body of sternum:
Sternebrae

Xiphoid process
Clavicle: Shape
Sigmoid
 Convex anteriorly
 Concave posteriorly

Clavicle: Ligament Attachments

Sternal end of clavicle to first costal
cartilage:
Costoclavicular ligament

Conoid tubercle:
Conoid portion of coracoclavicular ligament

Trapezoid line:
Trapezoid portion of coracoclavicular
ligament
Clavicle: Muscle Attachments
Deltoid
 Pectoralis major
 Trapezius
 Sternocleidomastoid
 Subclavius

Scapula

Crosses ribs 2 through 7 in anatomical
position.
Scapula: Posterior Surface
Scapular spine
 Supraspinous fossa
 Infraspinous fossa
 Spinoglenoid notch
 Medial (vertebral border)
 Superior angle
 Inferior angle

Scapula: Anterior Surface
Subscapular fossa
 Scapular (suprascapular) notch

Scapula: Coracoid Process

Muscle attachments:
Biceps brachii brevis
Coracobrachialis
Pectoralis minor
Scapular Processes
Acromion process
 Glenoid process:

Articulation with head of humerus.
Supraglenoid tubercle:
Biceps brachii longus tendon
Infraglenoid tubercle:
Triceps longus
Humerus
Anatomical neck
 Surgical neck
 Head
 Medial supracondylar ridge (crest)
 Lateral supracondylar ridge (crest)
 Medial epicondyle
 Lateral epicondyle
 Deltoid tuberosity

Humerus: Anterior Surface

Greater tubercle (tuberosity):
Superior facet (for supraspinatus muscle)
Middle facet (for infraspinatus muscle)
Inferior facet (for teres minor muscle)

Lesser tubercle (tuberosity):
For subscapularis muscle

Intertubercular groove:
For latissimus dorsi muscle
Humerus: Anterior Surface

Crest of greater tubercle (lateral lip):
For pectoralis major muscle

Crest of lesser tubercle (medial lip):
For teres major muscle
Radial fossa
 Coronoid fossa
 Capitulum
 Trochlea

Humerus: Posterior Surface

Spiral (radial) groove:
For radial nerve and deep brachial artery
Origin of lateral triceps superior to groove
Origin of medial triceps inferior to groove
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Olecranon fossa
Radius

Head
Articulates with capitulum of humerus
Fovea

Neck
Just distal to head

Styloid process
Distal, lateral process


Articular surface for scaphoid bone
Articular surface for lunate bone
Radius

Ulnar notch
At distal end of radius on medial side

Interosseous margin
On medial side
For attachment of interosseous membrane
Anterior margin
 Radial tuberosity (bicipital tuberosity)

Insertion for biceps brachii muscle
Radius
Posterior margin
 Dorsal tubercle

Groove to extensor pollicis longus is lateral.
Groove for extensor carpi radialis longus and
brevis is medial.

Groove for extensor digitorum and indicis
muscles
Ulna
Interosseous margin
 Head (distal)
 Styloid process

Distal, medial

Radial notch
At proximal end
Ulna

Trochlear notch:
Articulates with trochlea of humerus
Coronoid process
 Tuberosity
 Anterior border

Ulna
Supinator fossa
 Supinator crest
 Posterior border
 Olecranon process:

For insertion of triceps
Carpus

Proximal row of bones (radial to ulnar):
Scaphoid:
Tubercle of scaphoid
Lunate
Triquetral
Pisiform:
Sesamoid bone in tendon of flexor carpi
ulnaris
Carpus

Distal row of bones (radial to ulnar):
Trapezium
Trapezoid
Capitate
Hamate:
Hook of hamate (hamulus)
Carpometacarpal joint (CMC)
Metacarpals
Carpus
Metacarpophalangeal joints (MCP)
 Phalanges

Proximal:
Proximal interphalangeal joint (PIP)
Middle:
Distal interphalangeal joint (DIP)
Distal: