5.muscles of upper limb
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MUSCLES OF UPPER LIMB
MUSCLES OF FOREARM WRIST AND
HAND
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FOREARM
Note: the deep fascia in the forearm(antebrachial fascia) encloses the forearm
region. This fascial sheath, together with theinterosseous membrane (between the radiusand ulna) and fibrous intermuscular septa,divides the forearm into anterior andposterior fascial compartments, each havingits own muscles, nerves, and blood supply.
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Superficial Group
Pronator Teres
Originhumeral head: medial epicondyle of
humerus (common flexor tendon)
ulnar head: coronoid process of ulna
Insertion radius
action: pronation and flexion of forearm nerve supply: median nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Coronoid_process_of_ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Coronoid_process_of_ulnahttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Flexor Carpi Radialis
Originmedial epicondyle of humerus
(common flexor tendon)
Insertion Bases of second and third
metacarpal bones
action: flexion and abduction of hand at wristjoint
nerve supply: median nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Third_metacarpal_bonehttp://en.wikipedia.org/wiki/Third_metacarpal_bonehttp://en.wikipedia.org/wiki/Third_metacarpal_bonehttp://en.wikipedia.org/wiki/Third_metacarpal_bonehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Palmaris Longus
Originmedial epicondyle of humerus
(common flexor tendon)
Insertion palmar aponeurosis
action: flexion of hand
nerve supply: median nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Medial_epicondyle_of_humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Flexor Carpi Ulnaris
Originmedial epicondyle (common flexor
tendon)
Insertion pisiform
action: flexion and adduction of hand at wrist
joint
nerve supply: ulnar nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Pisiformhttp://en.wikipedia.org/wiki/Pisiformhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Deep Group
Flexor Digitorum Superficialis
Originmedial epicondyle of the humerus
(common flexor tendon) as well as parts of the
radius and ulna.
Insertion phalanges
action: flexion of middle phalanx of fingers;
assists in flexing proximal phalanx and hand
nerve supply: median nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Radius_(bone)http://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Phalangeshttp://en.wikipedia.org/wiki/Phalangeshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Radius_(bone)http://en.wikipedia.org/wiki/Common_flexor_tendonhttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Flexor Pollicis Longus
Origin The middle 2/4 of the volar surface of theradius and the adjacent interosseus membrane.(Also occasionally a small origin slightly on themedial epicondyle of the ulna.)
Insertion The base of the distal phalanx of thethumb
action: flexion of distal phalanx of thumb
nerve supply: anterior interosseous branch ofmedian nerve
http://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Distal_phalanxhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Distal_phalanxhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/Medial_epicondylehttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Interosseus_membranehttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/Volarhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Flexor Digitorum Profundus
Originulna
Insertion distal phalanges action: flexion of distal phalanx of fingers;
assists in flexion of middle and proximal
phalanges and wrist
nerve supply: ulnar and median nerves
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Distal_phalangeshttp://en.wikipedia.org/wiki/Distal_phalangeshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Pronator Quadratus
Origin medial, anterior surface of the ulna
Insertion lateral, anterior surface of theradius
action: pronation of forearm
nerve supply: anterior interosseous branch ofmedian nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Muscles of the Posterior Fascial Compartment -
generally extensors
1. Superficial Group - arise from the lateralepicondyle & ridge just above it
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Brachioradialis:
Origin :Lateral supracondylar ridge of the
humerus
Insertion Distal radius (Radial styloid
process)
action: flexion of forearm; rotation of forearm
to midprone position(Beer mug Raising muscle )
nerve supply: radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_supracondylar_ridgehttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/Radiushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Lateral_supracondylar_ridgehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Carpi Radialis Longus*:
Originlateral supracondylar ridge
Insertion 2nd metacarpa
action: extension and abduction of hand at
wrist joint
nerve supply: radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_supracondylar_ridgehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/2nd_metacarpalhttp://en.wikipedia.org/wiki/2nd_metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_supracondylar_ridgehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Carpi Radialis Brevis
Originhumerus at the anterior oflateral
epicondyle (common extensor tendon)
Insertion base of the 3rd metacarpal
action: extension and abduction of hand at
wrist joint
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/3rd_metacarpalhttp://en.wikipedia.org/wiki/3rd_metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Digitorum:
Originlateral epicondyle (common extensor
tendon)
Insertion middle and distal phalanges
action: extension of fingers and hand
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Phalangeshttp://en.wikipedia.org/wiki/Phalangeshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Digiti Minimi
Origin the anterior portion of the lateral
epicondyle of the humerus (common extensortendon)
Insertion at the extensor expansion, located
at the base of the proximal phalanx of thefinger on the dorsal side
action: extension of metacarpophalangeal
joint of little finger nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Extensor_expansionhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/Extensor_expansionhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Carpi Ulnaris:
OriginCommon extensor tendon (lateral
epicondyle), ulna
Insertion 5th metacar
action: extension and adduction of hand at
wrist joint
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/5th_metacarpalhttp://en.wikipedia.org/wiki/5th_metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Lateral_epicondyle_of_the_humerushttp://en.wikipedia.org/wiki/Common_extensor_tendonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Supinator:
OriginLateral epicondyle ofhumerus,
supinator crest ofulna, radial collateral
ligament, annular ligament
Insertion Lateral proximal radial shaft
action: supination of forearm
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Supinator_cresthttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Radial_collateral_ligamenthttp://en.wikipedia.org/wiki/Radial_collateral_ligamenthttp://en.wikipedia.org/wiki/Annular_ligamenthttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radial_shafthttp://en.wikipedia.org/wiki/Radial_shafthttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Annular_ligamenthttp://en.wikipedia.org/wiki/Radial_collateral_ligamenthttp://en.wikipedia.org/wiki/Radial_collateral_ligamenthttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Supinator_cresthttp://en.wikipedia.org/wiki/Humerushttp://en.wikipedia.org/wiki/Lateral_epicondylehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Deep Group - arise principally in succession
along the dorsal side of the forearm bones
and interosseous membrane
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Abductor Pollicis Longus*
Originulna, radial styloid process
Insertion first metacarpal
action: abduction and extension of thumb
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/First_metacarpalhttp://en.wikipedia.org/wiki/First_metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radial_styloid_processhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Extensor Pollicis Brevis:
Originradius
Insertion thumb, proximal phalanx
action: extension of metacarpophalangeal
joint of thumb
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radius_%28bone%29http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Radius_%28bone%29http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Abductor Pollicis Longus,Extensor Pollicis
Brevi,Extensor Pollicis Longus*
All the three muscles form the boundaries of a
triangular skin depression on the lateral side
of the wrist known as the anatomical
snuffbox where the scaphoid bone is mosteasily palpated and pulsations of the radial
artery can be felt)
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Extensor Indicis :
Originulna
Insertion index finger (extensor hood)
action: extension of metacarpophalangeal
joint of index finger
nerve supply: deep branch of radial nerve
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Index_fingerhttp://en.wikipedia.org/wiki/Extensor_hoodhttp://en.wikipedia.org/wiki/Extensor_hoodhttp://en.wikipedia.org/wiki/Index_fingerhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Ulnahttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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WRIST AND HAND
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WRIST AND HAND
Flexor and Extensor Retinacula
specialized bands of deep fascia seen in the
region of the wrist that serve to hold the long
flexor and extensor tendons in position
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flexor retinaculum stretches across the
front of the wrist and converts the concave
anterior surface of the carpus into an
osteofascial tunnel for the passage of themedian nerve and the flexor tendons of the
thumb and fingerscarpal tunnel
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extensor retinaculum stretches across the
back of the wrist and converts the grooves on
the posterior ends of the radius and ulna into
6 separate tunnels for the passage of the longextensor tendons
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Palmar Aponeurosis
thick, triangular-shaped deep fascia occupying
the central area of the palm medial and lateral borders continuous with
the thinner deep fascia covering the thenar
and hypothenar muscles gives firm attachment to the overlying skin
and so improve the grip and to protect the
underlying tendons
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Fibrous Flexor Sheaths
strong fibrous sheaths attached to the sides of
the phalanges
together with anterior surfaces of phalanges
and interphalangeal joints, form osteofibrous
tunnels in which the flexor tendons of the
fingers lie.
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Synovial Flexor Sheaths
surround the long flexor tendons
form digital synovial sheaths, common flexor
synovial sheath (ulnar bursa), and the synovial
sheath for the flexor pollicis longus (radial
bursa).
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Palmar Fascial Spaces
potential spaces filled with loose connective
tissue that may limit the spread of infection in
the palm
continuous distally with the lumbrical canals
closed of proximally from the forearm by the
walls of the carpal tunnel
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I t i i (Sh t) M l f th H d
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Intrinsic (Short) Muscles of the Hand
1. Short Muscles of the Thumb
a. Abductor Pollicis Brevis - abduction of
thumb
Origin Transverse carpal ligament, the
scaphoid and trapezium
Insertion Radial base ofproximal phalanx of
thumb and the thumb extensors[1]
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Scaphoidhttp://en.wikipedia.org/wiki/Trapeziumhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Thumb_extensorhttp://en.wikipedia.org/wiki/Abductor_pollicis_brevis_musclehttp://en.wikipedia.org/wiki/Abductor_pollicis_brevis_musclehttp://en.wikipedia.org/wiki/Thumb_extensorhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Trapeziumhttp://en.wikipedia.org/wiki/Scaphoidhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Flexor Pollicis Brevis :
Origintrapezoid, flexor retinaculum
Insertion thumb, proximal phalanx
flexes metacarpophalangeal joint of thumb
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Trapezoid_bonehttp://en.wikipedia.org/wiki/Flexor_retinaculumhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Flexor_retinaculumhttp://en.wikipedia.org/wiki/Trapezoid_bonehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Opponens Pollicis:
Origintrapezium and transverse carpal
ligament
Insertion metacarpal bone of the thumb on
its radial side - pulls thumb medially and
forward across palm
All the three muscles form the thenar
eminence
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Trapezium_%28bone%29http://en.wikipedia.org/wiki/Transverse_carpal_ligamenthttp://en.wikipedia.org/wiki/Transverse_carpal_ligamenthttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Transverse_carpal_ligamenthttp://en.wikipedia.org/wiki/Transverse_carpal_ligamenthttp://en.wikipedia.org/wiki/Trapezium_%28bone%29http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Adductor Pollicis
OriginTransverse head: anterior body of the
third metacarpal
Oblique head: bases of the second and thethird metacarpals and the adjacent trapezoid
and capitate bones
Insertion medial side of the base of theproximal phalanx of the thumb and the ulnar
sesamoid adduction of thumb
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Third_metacarpalhttp://en.wikipedia.org/wiki/Second_metacarpalhttp://en.wikipedia.org/wiki/Third_metacarpalhttp://en.wikipedia.org/wiki/Trapezoidhttp://en.wikipedia.org/wiki/Capitatehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Ulnar_sesamoidhttp://en.wikipedia.org/wiki/Ulnar_sesamoidhttp://en.wikipedia.org/wiki/Ulnar_sesamoidhttp://en.wikipedia.org/wiki/Ulnar_sesamoidhttp://en.wikipedia.org/wiki/Thumbhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Capitatehttp://en.wikipedia.org/wiki/Trapezoidhttp://en.wikipedia.org/wiki/Third_metacarpalhttp://en.wikipedia.org/wiki/Second_metacarpalhttp://en.wikipedia.org/wiki/Third_metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Short Muscles of the Little Finger - form the
hypothenar eminence
a. Abductor Digiti Minimi
Originpisiform
Insertion base of the proximal phalanx of
the 5th digit on the ulnar or medial side.
abducts little finger
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Pisiformhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/5th_digithttp://en.wikipedia.org/wiki/5th_digithttp://en.wikipedia.org/wiki/Proximal_phalanxhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Pisiformhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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b. Flexor Digiti Minimi
Originhamate bone
Insertion little finger
flexes little finger
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Hamate_bonehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Little_fingerhttp://en.wikipedia.org/wiki/Little_fingerhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Hamate_bonehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Opponens Digiti Minimi
Origin Hook ofhamate and flexor retinaculum
Insertion Medial border of 5th metacarpal
pulls 5th metacarpal
forward as in cupping of the palm
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Hamatehttp://en.wikipedia.org/wiki/Flexor_retinaculumhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalhttp://en.wikipedia.org/wiki/Metacarpalhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Flexor_retinaculumhttp://en.wikipedia.org/wiki/Hamatehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Small Muscles of the Hand
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Small Muscles of the Hand
a. Palmaris Brevis Originflexor retinaculum (medial), palmar
aponeurosisInsertion palm
corrugates skin to improve grip of palm
b. Lumbricals (4)
Originflexor digitorum profundus
Insertion extensor expansion
flex metacarpophalangeal joints and extendinterphalangeal joints of fingers, except thumb
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Flexor_retinaculum_of_the_handhttp://en.wikipedia.org/wiki/Handhttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Handhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Flexor_digitorum_profundushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Extensor_expansionhttp://en.wikipedia.org/wiki/Extensor_expansionhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Flexor_digitorum_profundushttp://en.wikipedia.org/wiki/Flexor_digitorum_profundushttp://en.wikipedia.org/wiki/Flexor_digitorum_profundushttp://en.wikipedia.org/wiki/Flexor_digitorum_profundushttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Handhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Palmar_aponeurosishttp://en.wikipedia.org/wiki/Flexor_retinaculum_of_the_handhttp://en.wikipedia.org/wiki/Flexor_retinaculum_of_the_handhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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brevis lumbricals
Interossei (8)
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Interossei (8)
Palmar Interossei (4) - Originmetacarpals ,Insertion proximal phalange
adduct fingers toward center 3rd finger. Note: PAD
(palmer adduction)
Dorsal Interossei (4)
OriginmetacarpalsInsertion proximal phalanges
abduct fingers from center of 3rd finger. Note: DAB
(dorsal abduction)
http://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalangehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/Proximal_phalangeshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Proximal_phalangehttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeletonhttp://en.wikipedia.org/wiki/Metacarpalshttp://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton -
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Palmar and dorsal
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Nerve Supply: ALL intrinsic muscles of the
hand are innervated by the ULNAR NERVE,
EXCEPT for 5 muscles: the 3 thenar muscles
and lumbricals 1 and 2 which are innervatedby the median nerve
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