Wrist Muscle Origin & Insertion Flashcards
Flexor Carpi Radialis
O: Medial Epicondyle of Humerus
I: Palmar Surface of Base of 2nd Metacarpal
Palmaris Longus
O: Medial Epicondyle of Humerus
I: Distal Palmar Aspect of Flexor Retinaculum & Palmar
Aponeurosis
Flexor Carpi Ulnaris
O: Medial Epicondyle of Humerus & Medial Margin of
Olecranon Process
I: Pisiform & Base of 5th Metacarpal
Extensor Carpi Radialis Longus
O: Lower 1/3 of Lateral Supracondylar Ridge & Lateral
Epicondyle
I: Dorsal Surface of Base of 2nd Metacarpal
Extensor Carpi Radialis Brevis
O: Lateral Epicondyle of Humerus
I: Dorsal Surface of Base of 3rd Metacarpal
Extensor Carpi Ulnaris
O: Lateral Epicondyle
I: Base of 5th Metacarpal
Flexor Digitorium Superficialis
O: Medial Epicondyle of Humerus
I: Anterior Surface of Middle Phalanges of Digits 2-5
Flexor Digitorum Profundus
O: Upper 3/4 of Medial and Lateral Aspects of Ulna
I: Base of Distal Phalnges of Digits 2-5
Extensor Digitorum Communis
O: Lateral Epicondyle
I: Dorsal Base of Middle Phalange Digits 2-5
Extensor Indicis Proprius
O: Distal Posterior Surface of Ulna
I: Ulnar Side of Extensor Digitorum Tendon to Index Finger
Extensor Digiti Minimi
O: Lateral Epicondyle
I: Dorsal Digital Expansion of 5th Digit
Dorsal Interosseous
O: 1st: Adjacent Side of 1st & 2nd Metacarpal
2nd: Adjacent Side of 2nd & 3rd Metacarpal
3rd: Adjacent Side of 3rd & 4th Metacarpal
4th : Adjacent Side of 4th & 5th Metacarpal
I: 1st : Base of Phalanx of Index Finger
2nd: Base of Proximal Phalanx of Middle Finger
3rd: Base of Proximal Phalanx of Middle Finger
4th: Proximal Phalanx of Ring Finger
Palmar Interosseous
O: 1st: Base of 1st Metacarpal Bone
2nd: Palmar Aspect of 2nd Metacarpal Bone
3rd: Palmar Aspect of 4th Metacarpal
4th: Palmar Aspect of 5th Metacarpal
I: All Insert into Dorsal Digital Expansions
Lumbricals
O: 1st: Radial and Palmar Surfaces of Tendons of Index and
Middle Finger
2nd: Radial and Palmar Surfaces of Tendons of Index
and Middle Finger
3rd: Adjacent Sides of Tendons of Middle and Ring
Fingers
4th: Adjacent Sides of Tendons of Ring and Little Finger
I: Radial Aspect of Dorsal Digital Expansions
Abductor Digiti Minimi
O: Pisiform Bone
I: Base of Proximal Phalanx of Little Finger
Opponens Digiti Minimi
O: Hook of Hamate
I: Palmar Surface of 5th Metacarpal Bone
Flexor Digiti Minimi
O: Hook of Hamate
I: Base of Proximal Phalanx of Little Finger
Flexor Pollicis Longus
O: Anterior Surface of Radius
I: Palmar Aspect of the Base of the Distal Phalanx of the
Thumb
Flexor Pollicis Brevis
O: Superficial Head: Flexor Retinaculum and Tubercle of
Trapezium Bone
Deep Head: Capitate and Trapezoid
I: Radial Side of the Base of the Proximal Phalanx of the
Thumb
Extensor Pollicis Longus
O: Middle 1/3 of the Posterolateral Aspect of the Ulna
I: Dorsal Aspect of the Base of the Distal Phalanx of the
Thumb
Extensor Pollicis Brevis
O: Posterior Aspect of the Radius
I: Dorsal Aspect of the Proximal Phalanx of the Thumb
Abductor Pollicis Longus
O: Posterior Aspect of Ulnar Shaft
I: Radial Aspect of the Base of the 1st Metacarpal Bone
Abductor Pollicis Brevis
O: Tubercles of Trapezium and Scaphoid Bones
I: Radial Aspect of the Base of the Proximal Phalanx of the
Thumb
Adductor Pollicis
O: Oblique Head: Capitate
Transverse Head: Distal 2/3 of the Palmar Surface of the
Shaft 3rd Metacarpal Bone
I: Ulnar Aspect of the Base of the Proximal Phalanx of the
Thumb
Opponens Pollicis
O: Tubercle of Trapezium/Flexor Retinaculum
I: Lateral & Palmar Aspect of 1st Metacarpal Bone
