Download Muscle Attachment Sites in the Upper Limb

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Muscle Attachment Sites in the Upper Limb
The Clavicle
Pectoralis major
Right clavicle
Deltoid tubercle:
attachment of the deltoid
Smooth superior surface of the shaft, under the platysma muscle
Deltoid
Axillary nerve
Acromial facet
Trapezius
Sternocleidomastoid and Trapezius innervated by the Spinal Accessory nerve
Sternocleidomastoid
Conoid tubercle, attachment of the
conoid ligament
which is the medial part of the
coracoclavicular ligament
Sternal facet
Conoid ligament
Costoclavicular ligament
Acromial facet
Impression for the
costoclavicular ligament
which binds the clavicle to
the first rib
Subclavian groove:
site of attachment of the
subclavius muscle
Subclavius
Innervated by Nerve to Subclavius
Trapezoid line, attachment of the
trapezoid ligament
which is the lateral part of the
coracoclavicular ligament
Trapezoid ligament
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The Scapula
Trapezius
Right scapula: posterior
Levator scapulae
Supraspinatus
Deltoid
Deltoid and Teres Minor are
innervated by the Axillary nerve
Rhomboid minor
Levator Scapulae, Rhomboid minor
and Rhomboid Major are innervated
by the Dorsal Scapular Nerve
Supraspinatus and
Infraspinatus innervated
by the Suprascapular nerve
Long head of triceps
Infraspinatus
Rhomboid major
Teres Minor
Teres Major
Teres Major innervated by Lower Subscapular Nerve
Latissimus dorsi
Latissimus dorsi innervated by the Thoracodorsal nerve
Deltoid
Right scapula: anterior
Pectoralis minor
Innervated by the medial pectoral nerve
Biceps brachii:
short head
Serratus anterior
Serratus anterior is innervated by the
Long Thoracic nerve
Coracobrachialis and Biceps Brachii
are innervated by the
Musculocutaneous nerve
Coracobrachialis
Subscapularis
Subscapularis innervated
by the Upper and lower
Subscapular nerves
Long head of triceps
Innervated by the Radial nerve
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The Humerus
Right Humerus: anterior
Supraspinatus
(greater tubercle)
Suprascapular nerve
Right Humerus: posterior
Subscapularis
(lesser tubercle)
Teres minor
Axillary nerve
Upper and lower Subscapular nerves
Infraspinatus
(greater tuberosity
Suprascapular nerve
Latissimus dorsi
Thoracodorsal nerve
The bicipital groove
Covered by the transverse
ligament
Teres major
Lower Subscapular Nerve
Triceps brachii:
Lateral head
Pectoralis major
Innervated by the Lateral and
medial pectoral nerves
Deltoid
Deltoid
Axillary nerve
Axillary nerve
All heads of the triceps are
innervated by the Radial nerve
Coracobrachialis
Musculocutaneous nerve
Triceps brachii:
Medial head
Brachialis
Musculocutaneous nerve
Brachioradialis
Radial nerve
Anconeus
Extensor carpi
radialis longus
Pronator teres
Flexor carpi ulnaris
Median nerve
Ulnar nerve
(Radial Nerve)
Common extensor origin:
- Extensor carpi radialis brevis (deep branch of the radial nerve)
- Extensor digitorum (posterior interosseous nerve)
- Extensor digiti minimi(posterior interosseous nerve)
- Extensor carpi ulnaris (posterior interosseous nerve)
-
Radial nerve
Supinator
Deep branch of
radial nerve
Common flexor origin:
- Flexor carpi radialis (Median nerve)
- Palmaris longus (Median nerve)
- Humeroulnar head of the FLEXOR DIGITORUM SUPERFICIALIS
(Median nerve)
-
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The Radius and Ulna: Flexor compartment
Brachialis
Musculocutaneous nerve
Biceps brachii
Musculocutaneous nerve
Supinator
Flexor digitorum
superficialis
Deep branch of
radial nerve;
actually a part of the extensor
compartment
(Median nerve)
Flexor digitorum
superficialis
Pronator teres:
the ulnar head originates here
innervated by the Median nerve
(Median nerve)
Flexor carpii ulnaris
Pronator teres
Ulnar head originates here
Innervated by the Ulnar nerve
(Median nerve)
Flexor pollicis longus
Anterior interosseous nerve
Flexor digitorum
profundis
Radial half innervated by
the Median nerve
Ulnar Half innervated by
the ulnar nerve
Pronator quadratus
Brachioradialis
Radial nerve
ORIGINATES at the ULNA
INSERTS into the RADIUS
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The Radius and Ulna: dorsal surface
Triceps brachii
Radial nerve
Anconeus
Radial nerve
Supinator
Deep branch of
radial nerve
Supinator
Deep branch of
radial nerve
Abductor pollicis longus
(posterior interosseous nerve)
Pronator teres
(Median nerve)
Extensor pollicis longus
(posterior interosseous nerve)
Posterior oblique line
Extensor pollicis brevis
(posterior interosseous nerve)
Extensor indices
(posterior interosseous nerve)
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The carpus and hand: palmar surface
Flexor digitorum superficialis
(Median nerve – index and middle finger)
(Ulnar nerve – ring and pinky fingers)
Inserts into the distal phalanges
Adductor pollices
(Median nerve)
Flexor digitorum superficialis
(Median nerve)
Inserts into the middle phalanges
Flexor pollicis longus
(Anterior interosseous nerve)
Flexor digiti minimi brevis
(deep branch of ulnar nerve)
Flexor pollicis longus
(deep branch of ulnar nerve)
Abductor digit minimi
Flexor pollicis brevis
(deep branch of ulnar nerve)
(recurrent branch of Median nerve)
Abductor pollicis brevis
Opponens digit minimi
(recurrent branch of Median nerve)
(deep branch of ulnar nerve)
Opponens pollicis
(recurrent branch of Median
nerve)
Abductor pollicis longus
Flexor carpii ulnaris
(recurrent branch of Median nerve)
Unique among anterior
compartment muscles because it
is WHOLELY innervated by the
Ulnar nerve
Abductor digit minimi
Flexor Carpi radialis
(deep branch of ulnar nerve)
(Median nerve)
Palmaris longus
(Median nerve)
Inserts into the flexor
retinaculum
Opponens pollicis brevis, abductor pollicis brevis and flexor pollicis brevis all originate from the flexor retinaculum
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The carpus and hand: dorsal surface
Extensor digitorum
Extensor indices
(posterior interosseous nerve)
(posterior interosseous nerve)
Extensor digit minimi
(posterior interosseous nerve)
Extensor carpi radialis longus
(radial nerve)
Extensor pollicis longus
(posterior interosseous nerve)
Extensor carpi radialis brevis
Deep branch of radial nerve
Dorsal interossei
Deep branch of ulnar nerve
Extensor pollicis brevis
(posterior interosseous nerve)
Extensor carpi ulnaris
Deep branch of radial nerve
Abductor pollicis longus
(posterior interosseous nerve)