Wrist/Hand Flashcards
Flexor Carpi Radialis
Group:
- Wrist Flexors
Origin:
- medial Epicondyle of the Humerus via the common flexor tendon
Insertion:
- bases of metacarpals II and III
Actions:
- flexes wrist
- abducts wrist
- flexes elbow
Abductor Pollicis Longus
Group:
- Deep Distal 4
- Snuff Box
- Long Muscles/Tendinous - Originates along shafts of Radius/Ulna
Origin:
- Anterior Radial Shaft (middle)
- Interosseus membrane
Insertion:
- Lateral metacarpal of thumb (I)
Actions:
- Abduct thumb
- Extends thumb
- Lateral rotation of thumb
- Abducts hand at wrist
- Flexes hand at wrist
- Supinates the forearm
Flexor Carpi Ulnaris
Group:
- Wrist Flexor
Origin:
- medial epicondyle of the humerus via the common flexor tendon
- medial olecranon
- posterior proximal 2/3 of the ulna
Insertion:
- base of the metacarpal V
- pisiform
- hook of the Hamate
Actions:
- flexes the wrist
- Adducts the wrist
Palmaris Longus
Groups:
- Wrist Flexor
Origin:
- medial epicondyle of the humerus via the common flexor tendon
- anterior proximal radial shaft
- Coronoid process of the Ulna
Insertion:
- palmar aponeurosis
Actions:
- flexes the wrist
- cups (tenses) the palm
Flexor Digitorum Superficialis
Group:
- Finger Flexor
Origin:
- Medial Epicondyle of the humerus via the common flexor tendon
- Anterior proximal radial shaft
- Coronoid process of the ulna
Insertion:
- middle phalanges of the digits II-V
Action:
- flexes the wrist
- flexes the fingers at PIP and MIP
Flexor Digitorum Profundis
Group:
- Finger Flexor
Origin:
- anterior proximal 3/4 of the anterior ulnar shaft
- interosseous membrane
Insertion:
- digital phalanges of the digits II-V
Action:
- flexes the wrist
- flexes the fingers at the DIP, PIP, and MIP
Extensor Carpi Radialis Longus
Group:
- Wrist Extensor
Origin:
- Lateral Epicondyle of the humerus via the common extensor tendon
Insertion:
- Posterior base of metacarpal II
Action:
- Extends the wrist
- Abducts the wrist
Extensor Capri Radialis Brevis
Group:
Origin:
Insertion:
Action:
Extensor Carpi Ulnaris
Group:
Origin:
Insertion:
Action:
Extensor Digitorum
Group:
Origin:
Insertion:
Action:
Extensor Digiti Minimi
Group:
Origin:
Insertion:
Action:
Abductor Pollicis Brevis
Group:
Origin:
Insertion:
Action:
Flexor Pollicis Brevis
Group:
Origin:
Insertion:
Action:
Opponents Pollicis
Group:
Origin:
Insertion:
Action:
Abductor Pollicis
Group:
Origin:
Insertion:
Action:
Flexor Pollicis Longus
Group:
Origin:
Insertion:
Action:
Extensor Pollicis Brevis
Group:
Origin:
Insertion:
Action:
Extensor Pollicis Longus
Group:
Origin:
Insertion:
Action:
Extensor Indicis
Group:
Origin:
Insertion:
Action:
Lumbricals Manus
Group:
Origin:
Insertion:
Action:
Palmar Interossei
Group:
Origin:
Insertion:
Action:
Dorsal Interossei Manus
Group:
Origin:
Insertion:
Action:
Abductor Digiti Minimi Manus
Group:
Origin:
Insertion:
Action:
Flexor Digiti Minimi Manus
Group:
Origin:
Insertion:
Action:
Opponents Digiti Minimi
Group:
Origin:
Insertion:
Action:
Palmaris Brevis
Group:
Origin:
Insertion:
Action:
Wrist Flexors
- Flexor Carpi Radialis
- Flexor Carpi Ulnaris
- Palmaris Longus
Finger Flexors
- Flexor Digitorum Superficialis
- Flexor Digitorum Profundis
Wrist Extensors
- Extensor Carpi Radialis Longus
- Extensor Carpi Radialis Brevis
- Extensor Carpi Ulnaris
Finger Extensor
- Extensor Digitorum
- Extensor Digiti Minimi
Superficial Extensor Group Muscles
- Brachioradialis
- Extensor Carpi Radialis Brevis
- Extensor Carpi Radialis Longus
- Extensor Carpi Ulnaris
- Extensor Digitorum
- Extensor Digiti Minimi
- Anconeus
Short Muscle/Thenar Eminence Group
- Abductor Pollicis Brevis
- Flexor Pollicis Brevis
- Opponens Pollicis
- Adductor Pollicis
Long Muscles/Tendinous Group
(Originates along the shaft of the Radius or Ulna
- ** Flexor Pollicis Longus** (Radial shaft): Flexes thumb
- Abductor Pollicis Longus (Ulnar shaft): Abducts the thumb
- ** Extensor Pollicis Brevis** (Radial shaft): Extends the thumb
- Extensor` Pollicis Longus (Ulnar shaft)
- Extensor Indicis (Ulnar shaft)
Deep Distal 4
- Abductor Pollicis Longus: Abducts the thumb
- ** Extensor Pollicis Brevis**: Extends the thumb
- ** Extensor Pollicis Longus**: Extends the thumb
- ** Extensor Indicis**: Extends index finger
Snuff Box Group
- Abductor Pollicis Longus: Abducts the thumb
- Extensor Pollicis Brevis: Extends the thumb
- Extensor Pollicis Longus: Extends the thumb
Central Compartment/Lumbricals and Interossei Group
- Lumbricals Manus: Extends/Flexes all but thumb
- Palmar Interossei: Extends/Flexes/Adducts all but thumb
- Dorsal Interossei Manus: Extends/Flexes/Adducts all but thumb