Muscles E-F (Forearm and Hand) Flashcards
Pronator Teres (Origin and Insertion)
Common origin - common flexor tendon from the medial epicondyle
Radius - mid-shaft
Pronates the hand
Flexor Carpi Radialis
Flexion and abduction of the hand
Palmaris Longus (Insertion)
Flexor Retinaculum and Palmar Aponeurosis
Weak Flexion of the hand
Flexor Carpi Ulnaris (Insertion)
Pisiform Bone
Flexion and adduction of hand
Flexor Digitorum Superficialis (Insertion)
Middle of the intermediate phalange of all 4 fingers (complex)
Flexion of the intermediate phalange of all 4 fingers
Flexor Digitorum Profundus (Insertion)
Base of the terminal phalange of all 4 fingers
Flexes terminal phalange of 4 fingers
Flexor Pollicis Longus (Insertion)
Base of the distal phalange of thumb
Flexes Distal phalange
Pronator Quadratus
Pronates the hand
Extensor Carpi Radialis Longus (Origin)
Common Origin - common extensor tendon from the lateral epicondyle
Extension and abduction of the hand
Extensor Carpi Radialis Brevis
Extension and abduction of hand
Extensor Digitorum (Insertion)
Intermediate and distal phalanges via the dorsal expansion (hood)
Extends the phalanges of 4 fingers
Extensor Digiti Minimi
Extends little finger
Extensor Carpi Ulnaris
Extension and adduction of hand
Brachioradialis
Flexion of Forearm
Supinator
Supinates hand
Abductor Pollicis Longus
Abducts thumb
Extensor Pollicis Brevis
Extends proximal phalanx
Extensor Pollicis Longus
Extends terminal phalanx
Extensor Indicis
Extends index finger
Thenar Muscles
- Abductor Pollicis Brevis
- Flexor Pollicis Brevis
- Opponens Pollicis
- Adductor Pollicis
Hypothenar Muscles
- Abductor Digiti Minimi
- Flexor Digiti Minimi
- Opponens Digiti Minimi
Lumbricals - 4 (Origin and Insertion)
Tendon of flexor digitorum profundus
On radial (Lateral) side of the dorsum of the finger into aponeurotic extension of the extensor digitorum tendon (dorsal expansion)
Flex Proximal Phalange at the metacarpophalangeal joint of 4 fingers (plus)
Palmar Interossei - 3 (Origin and Insertion)
Metacarpal
Dorsal Expansion (medial or lateral side)
Palmars Adduct (PAD)
Dorsal Interossei - 4 (Origin and Insertion)
Two heads from adjacent metacarpals
Dorsal expansion (medial or lateral side)
Dorsals Abduct (DAB)
Anterior Flexor Compartment - Superficial Group
- Pronator Teres
- Flexor Carpi Radialis
- Palmaris Longus
- Flexor Digitorum Superficialis
- Flexor Carpi Ulnaris
Anterior Flexor Compartment - Deep Group
- Flexor Digitorum Profundus
- Flexor Pollicis Longus
- Pronator Quadratus
Posterior Extensor Compartment - Superficial
BrachioradialisExtensor Carpi Radialis Longus Extensor Carpi Radialis Brevis Extensor Digitorum Extensor Digiti Minimi Extensor Carpi Ulnaris
Posterior Extensor Group - Deep
- Supinator
- Abductor Pollicis Longus
- Extensor Pollicis Brevis
- Extensor Pollicis Longus
- Extensor Indicis
Intermediate Muscles
- Lumbricals
- Palmar Interossei
- Dorsal Interossei
What Structures pass through the Carpal Tunnel?
- Palmaris Longus
- Flexor Digitorum Superficialis
- Flexor Digitorum Profundus
- Median Nerve
* Total of 9 tendons and 1 nerve
Landmarks of the Exterior of the Palm
- Hypothenar Eminence
- Thenar Eminence
- Radial Longitudinal Crease of Palm
- Proximal Transverse Crease of Palm
- Distal Transverse Crease of Palm
- Distal Transverse Crease of Wrist
Name of the Covering of the Palmar aspect of the fingers
Fibrous Digital Sheath
Tendosynovitis
Inflammation of the Synovial Membrane of the Fibrous Digital Sheath