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OMM - Upper Limb Anatomy Origins and Insertions
Origins and Insertions of Upper Limb Musculature
46
Medical
Professional
09/04/2011

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Term
Deltoid
Definition

Origin: 1. Lateral 3rd of clavicle

2. Acromion

3. Scapular Spine

 

Insertion: Deltoid tuberosity on the humerus (anterior on middle part of humerus)

Term
Pectoralis Minor
Definition

Origin: Ribs 3-5

 

Insertion: Coracoid Process of the scapula

Term
Trapezius
Definition

Origin: Medial third of the superior muchal line of the occipital bone, external occipital protuberance, ligamentum nuchae, spinous processes of C7-T12

 

Insertion: 1. Lateral third of clavicle (descending)

2. Medial side of acromion (transverse) and upper crest/posterior border of scapular spine (transverse) (T1-T4)

3. Tubercle of scapular spine (ascending) (T5-12)

Term
Latissimus Dorsi
Definition

Origin: Vertebral spines from T7 to sacrum posterior third of the iliac crest, lower 3 or 4 ribs, sometines the inferior angle of the scapula

 

Insertion: Floor of the intertubercular Groove (anterior on humerus)

Term
Levator Scapula
Definition

Origin: Transverse processes of C1-C4

(C1 - atlas, OA joint -> headaches and cranial dysfunction)

 

Insertion: medial border of scapula from superior angle to the spine

Term
Rhomboid Major
Definition

Origin: Spines of vertebrae T2-T5

 

Insertion: Medial border of the scapula inferior to the spine of the scapula 

Term
Rhomboid Minor
Definition

Origin: spinous processes of C7 and T1 vertebra (inferior end of the ligamentum nuchae)

 

Insertion: Medial border of the scapule at the root of the spine of the scapula

Term
Biceps Brachii
Definition

Origin: Short head - tip of the coracoid process of the scapula

Long head: supraglenoid tubercle of the scapula

 

Insertion: Radial Tuberosity

Term
Serratus Anterior
Definition

Origin: Ribs 1-8 or 9

 

Insertion: medial border of the scapula on its costal (deep) surface

Term
Subscapularis
Definition

Origin: Medal two thirds of the costal surface(Subscapular fossa) of the scapula

 

Insertion: Lesser tubercle of the humerus

Term
Supraspinatous
Definition

Origin: Supraspinous fossa of the scapula

 

Insertion: Greater tubercle of the humerus

Term
Infraspinatus
Definition

Origin: Infraspinous fossa of the scapula

 

Insertion: Greater Tubercle of the humerus

Term
Teres Minor
Definition

Origin: Lateral Border of the scapula

 

Insertion: Greater tubercle of the humerus (lowest facet)

Term
Pronator Teres
Definition

Origin: Humeral Head: medial epicondyle of the humerus

Ulnar Head: Coronoid process of the ulna

 

Insertion: midpoint Lateral surface of the shaft of the radius

Term
Flexor Digitorum Superficialis
Definition

Origin: Humeral Head: medial epicondyle of the humerus

Ulnar head: Coronoid process of the ulna

Radial head: distal to the radial tuberosity

 

Insertion: shafts of middle phalanges of digits 2-5

Term
Flexor Carpi Radialis
Definition

Origin: medial epicondyle of the humerus

 

Insertion: Base of the second metacarpal (and sometimes 3rd)

Term
Flexor Carpi Ulnaris
Definition

Origin: Medial condyle at head of humerus

Olecranon at head of ulna

 

Insertion: Pisiform hook of the hamate, base of the fifth metacarpal

Term
Palmaris Longus
Definition

Origin: medial epicondyle of the humerus

 

Insertion: Palmar aponeurosis

Term
Flexor Digitorum Profundus
Definition

Origin: Posterior Border of the ulna, proximal two-thirds of medial border of ulna, interosseous membrane

 

Insertion: Palmar surface of the distal phalanges of the 2-5 digits

 

Term
Flexor Pollicis Longus
Definition

Origin: Mid-anterior surface of the radius and the adjacent interosseous membrane

 

Insertion: Palmar surface of the distal phalanx of the thumb

Term
Pronator Quadratus
Definition

Origin: Distal 1/4 of the anterior surface of the ulna

 

Insertion: Distal 1/4 of the anterior surface of the radius

Term
Brachioradialis
Definition

Origin: Lateral surface o the distal humerus, lateral intermuscular septum

 

Insertion: Styloid process of the radius

Term
Extensor Carpi Radialis Longus
Definition

Origin: Lateral surface of the distal humerus (lateral supracondylar ridge), lateral intermuscular septum

 

Insertion: Dorsal base of the second metacarpal

Term
Extensor Carpi Radialis Brevis
Definition

Origin: Lateral epicondyle on the humerus

 

Insertion: Dorsal base of the third metacarpal

Term
Extensor Digitorum 
Definition

Origin: Common head (lateral epicondyle of the humerus)

 

Insertion: Dorsal digital expansion of 2-5 digits

Term
Extensor Digiti Minimi
Definition

Origin: Common head (lateral epicondyle of the humerus)

 

Insertion: Dorsal digital expansion of the fifth digit

Term
Extensor Carpi Ulnaris
Definition

Origin: Common head (lateral epicondyle of the humerus), ulnar head (dorsal surface of the ulna)

 

Insertion: Base of the fifth metacarpal

Term
Supinator
Definition

Origin: Olecranon of the ulna, lateral epicondyle of the humerus, radial collateral ligament, annular ligament of the radius

 

Insertion: Radius (b/w the radial tuberosity and the insertion of pronator teres) (lateral side of proximal 1/3 radius

Term
Abductor Pollicis Longus
Definition

Origin: middle 1/3 Dorsal surfaces of the radius and ulna, also the interosseous membrane

 

Insertion: radial side of the base of the first metacarpal

 

 

Term
Extensor Pollicis Brevis
Definition

Origin: Interossieous membrane and the posterior surface of the distal radius

 

Insertion: Base of the proximal phalanx of the thumb

Term
Extensor Pollicis Longus
Definition

Origin: Interosseous Membrane and mille part of the posterolateral surface of the ulna

 

Insertion: Base of the distal phalanx of the thumb

Term
Extensor Indicis
Definition

Origin: Interosseous membrane and the posterolateral surface of the distal ulna

 

Insertion: Posterior digital expansion of the second digit

Term

Abductor Pollicis Brevis

Definition

Origin: Scaphoid Bone and trapezium, flexor retinaculum

 

Insertion: Base of the proximal phalanx of the thumb

Term
Adductor Pollicis
Definition

Origin: Oblique head: capitate and base of the 2nd and 3rd metacarpals, transverse head: shaft of the 3rd metacarpal

 

Insertion:  base og the proximal phalanx of the thumb

Term
Flexor Pollicis Brevis
Definition

Origin: Superficial head - flexor retinaculum, Deep head - capitate bone, trapezium

 

Insertion:Base of the proximal phalanx of the thumb

Term
Opponens Pollicis
Definition

Origin: Trapezium

 

Insertion: Radial border of the first metacarpal

Term
Abductor Digiti Minimi
Definition

Origin: pisiform

 

Insertion: Ulnar base of the proximal phalanx and the dorsal digital expansion of the 5th digit

Term
Flexor Digiti Minimi
Definition

Origin: Hook of the hamate, the flexor retinaculum

 

Insertion: Base of the proximal phalanx of the 5th digit

Term
Opponens Digiti Minimi
Definition

Origin: hook of the hamate

 

Insertion: Ulnar border of the 5th metacarpal

Term
Palmaris Brevis
Definition

Origin: Ulnar border of the palmar aponeurosis

 

Insertion: Skin of the hypothenar eminence

Term
Lumbricles
Definition

Origin: Radial sides of tendons of flexor digitorium profundus

 

Insertion: 1st -dorsal digital expansion of 2nd digit

2 - dorsal digital expansion of 3rd digit

3 - dorsal digital expansion of 4th digit

4 - dorsal digital expansion of 5th digit

Term
Palmar Interosseous Muscles
Definition

Origin: 1 - ulnar side of the second metacarpal

2 - radial side of the 4th metacarpal

3 - radial side of the 5th metacarpal

 

Insertion: dorsal digital expansion and base of the proximal phalanx of the associated finger

Term
Dorsal Interosseous Muscles
Definition

Origin: two heads adjacent sides of the first through 5th metacarpals

 

Insertion: Dorsal digital expansion of 2-5 digits, base of the proximal phalanx

2-3 - radial side

3-4 - ulnar side

Term
Brachialis
Definition

Origin: Distal hald od the anterior surface of the humerus, also the medial and lateral intermuscular septa

 

Insertion: Ulnar tuberosity

 

Term
Triceps brachii
Definition

Origin: Long head: infraglenoid tubercle of the scapula

Medial head: posterior surface of the humerus distal to the radial groove, and the medial intermuscular septum

Lateral head: posterior surface of the humerus, proximal to the radial groove, and the lateral intermuscular septum

 

Insertion: Olecranon of the ulna

Term
Aconeus
Definition

Origin: Lateral epicondyle of the humerus

 

Insertion: Olecranon of the ulna (radial surface) 

 

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