Wrist and Hand Flashcards
Abductor Digiti Minimi Origin
Pisiform and Tendon of Flexor Carpi Ulnaris
Abductor Digiti Minimi Insertion
Medial Base of Proximal Phalanx of 5th Finger
Abductor Digiti Minimi Action
- Abducts the 5th Digit2. Assists to Flex the 5th Digit
Abductor Digiti Minimi Nerve
Ulnar
Flexor Digiti Minimi Brevis Origin
Hamulus of Hamate and Transverse Carpal Ligament
Flexor Digiti Minimi Brevis Insertion
Ulnar Side of Base of Proximal Phalanx of 5th Finger
Flexor Digiti Minimi Brevis Action
Flexes 5th Digit
Flexor Digiti Minimi Brevis Nerve
Ulnar
Opponens Digiti Minimi Origin
Hamulus of Hamate and Flexor Retinaculum
Opponens Digiti Minimi Insertion
Ulnar Side of 5th Metacarpal
Opponens Digiti Minimi Action
- Opposes 5th Digit with the Thumb2. Assists to “Cup the Palm”
Opponens Digiti Minimi Nerve
Ulnar
Palmar Interossei Origin
1st: Ulnar Side of Palmar Surface of Base of 1st Metacarpal2nd: Ulnar Side of 2nd Metacarpal Bone3rd: Radial Side of 4th Metacarpal4th: Radial Side of 5th Metacarpal
Palmar Interossei Insertion
1st: Sesamoid Bone on Ulnar Side of Base of Proximal Phalanx of Thumb2nd: Ulnar Side of Proximal Phalanx of 2nd Finger3rd: Radial Side of Proximal Phalanx of 4th Finger4th: Radial Side of Proximal Phalanx of 5th Finger
Palmar Interossei Action
- Adducts the Fingers2. Flexes Fingers at the McP while the IP Joints are Extended
Palmar Interossei Nerve
Ulnar
Dorsal Interossei Origin
By Two Heads from Adjacent Sides of Metacarpal Bones
Dorsal Interossei Insertion
1st: Radial Side of Proximal Phalanx of 2nd Finger2nd: Radial Side of Proximal Phalanx of 3rd Finger3rd: Ulnar Side of Proximal Phalanx of 3rd Finger4th: Ulnar Side of Proximal Phalanx of 4th Finger
Dorsal Interossei Action
- Abducts the Fingers2. Flexes Fingers at the McP while IP Joints are Extended
Dorsal Interossei Nerve
Ulnar
Lumbricals Origin
Tendons of Flexor Digitorum Profundus (2-5)
Lumbricals Insertion
Tendons of Extensor Digitorum Communis (extensor expansion)
Lumbricals Action
- Flexes the Knuckles (McP joints)2. Extends IP joints
Lumbricals Nerve
1 & 2: Median3 & 4: Ulnar
Abductor Pollicis Brevis Origin
Trapezium, Scaphoid Tuberosity and Transcerse Carpal Ligament
Abductor Pollicis Brevis Insertion
Radial Side of Proximal Phalanx of Thumb
Abductor Pollicis Brevis Action
- Abducts Thumb2. Participates to Flex Thumb3. If attached to Extensor Pollicis Longus, it might assist to Extend the Thumb
Abductor Pollicis Brevis Nerve
Median
Flexor Pollicis Brevis Origin
Trapezium and Transverse Carpal Ligament
Flexor Pollicis Brevis Insertion
Radial Side of Proximal Phalanx of Thumb
Flexor Pollicis Brevis Action
Flexes the Thumb
Flexor Pollicis Brevis Nerve
Median
Opponens Pollicis Origin
Trapezium and Transverse Carpal Ligament
Opponens Pollicis Insertion
Whole Length of the Lateral Border of the 1st Metacarpal
Opponens Pollicis Action
Opposes the Thumb to the Fingers
Opponens Pollicis Nerve
Median
Adductor Pollicis Origin
- Transverse Head: 3rd Metacarpal 2. Oblique Head: Capitate, Bases of 2nd and 3rd Metacarpals, Trapezium and Trapezoid
Adductor Pollicis Insertion
Ulnar Side of Proximal Phalanx of Thumb
Adductor Pollicis Action
Adducts the Thumb
Adductor Pollicis Nerve
Ulnar