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28 Cards in this Set
- Front
- Back
Cubital fossa |
Boundaries: Line between epicodyles, brachioradialis m, pronator teres m.
Contents: Biceps brachii tendon, Brachial a, median n. (Lateral -> Medial) Radial and ulnar aa, supervicial vv (sit on top)
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Carpals (some lovers try positions that they can't handle) |
Scafoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate |
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Retinaculum |
Thickening deep fascia due to transverse collagen fibers
Found at wrist and ankle
Hold tendons in place (prevents bowstringing) |
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Superficial Anterior Compartment of the Forearm |
Pronator teres, Flexor carpi radialis, Palmaris longus, Flexor carpi ulnaris, Flexor digitorum superficialis (underneath) |
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Pronator teres m. |
Origin: 2 heads (Humeral and Ulnar) HH: Medial epicondyle of humerus UH: Coronoid process of ulna Insertion: Middle portion lateral surface radius Innervation: Median n. (C6, C7 primary) Action: Pronates forearm, assists w elbow flexion |
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Flexor carpi radialis m. |
Origin: Medial epicondyle of humerus Insertion: Base of 2nd metacarpal Innervation: Median n. (C6, C7 primary) Action: Wrist flexion, radial deviation (ABD) |
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Palmaris longus m. |
Origin: Medial epicondyle humerus Insertion: Flexor retinaculum, palmar aponeurosis Innervation: Median n. (C7 primary, C8) Action: Wrist flexion |
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Flexor carpi ulnaris m.
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Origin: 2 heads (Humeral and Ulnar)
HH: Medial epicondyle UH: Olecranon process and posterior surface ulna Insertion: Pisiform, hook hamate, base 5th metacarpal Innervation: Ulnar n. (C8) Action: Wrist flexion, ulnar deviation (ADD) |
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Flexor digitorum superficialis m. |
Origin: 2 heads (Humeral and Radial) HH: Medial epicondyle, coronoid process of ulna RH: Superior 1/2 anterior surface radius Insertion: Either side 2nd phalanx of digits 2-5 Innervation: Median n. (C7-T1) Actions: Flexion of PIP (proximal interphalangeal) joins of digits 2-5, assists with MCP (metacarpophalangeal) and CMC (carpalmetacarpal) flexion |
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Deep Anterior Compartment of the Forearm |
Pronator quadratus, Flexor digitorum profundus, Flexor pollicis longus |
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Pronator quadratus m. |
Origin: Distal anterior 1/4 ulna Insertion: Distal anterior 1/4 radius Innervation: Anterior interosseous n. (C8 primary, T1 branch median n.) Action: Forearm pronation |
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Flexor digitorum profundus m.
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Origin: Medial and anterior surface ulna, interosseoius membrane
Insertion: Distal phalanx digits 2-5 Innervation: Tendons 1 and 2 on digits 2 and 3 - anterior interosseous n. (C8 primary, T1) Tendons 3 and 4 on digits 4 and 5 - ulnar n. (C8, T1 primary) Action: DIP flexion digits 2-5, aids in PIP, MCP, and wrist flexion |
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Flexor pollicis longus m. |
Origin: Anterior surface radius, interosseous membrane Insertion: Distal phalanx 1st digit (thumb) Innervation: Anterior interosseous n. (C8 primary, T1) Action: IP flexion 1st digit (thumb), aids in MCP flexion 1st digit and wrist flexion |
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Carpal Tunnel |
Space below flexor retinaculum and above scaphoid and trapezium laterally and pisiform and hood of hamate medially
Filled with 9 tendons and median n. 4 from flexor digitorum superficialis 4 from flexor digitorum profundus 1 from flexor pollicis longus |
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Superficial Posterior Compartment of the Forearm |
Brachioradialis, Extensor carpi radialis longus, Extensor carpi radialis brevis, Extensor digitorum, Extensor digiti minimi, extensor carpi ulnaris |
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Brachioradialis |
Origin: Lateral supracondylar ridge humerus Insertion: Lateral distal radius Innervation: Radial n. (C5, C6 primary, C7) Actions: Elbow flexion
Separate action but same innervation of posterior compartment |
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Extensor carpi radialis longus m. |
Origin: Lateral supracondylar ridge humerus (distal to brachioradialis) Insertion: Base 2nd metacarpal Innervation: Radial n. (C6 primary, C7) Actions: Wrist extension, radial deviation (ABD) |
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Extensor carpi radialis brevis m. |
Origin: Lateral epicondyle humerus Insertion: Base 3rd metacarpal Innervation: Deep branch radial n. (C7 primary, C8) Action: Wrist extension, radial deviation (ABD) |
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Extensor digitorum m. |
Origin: Lateral epicondyle humerus Insertion: Extensor expansions of digits 2-5 Innervation: Deep branch radial n. (C7 primary, C8) Action: Extension digits 2-5 MCP, PIP, and DIP |
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Extensor digiti minimi m. |
Origin: Lateral epicondyle humerus Insertion: Extensor expansion of digit 5 Innervation: Deep branch radial n. (C7 primary, C8) Action: Allows for solo extension digit 5 |
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Extensor carpi ulnaris m. |
Origin: Lateral epicondyle humerus Insertion: Base 5th metacarpal Innervation: Deep branch radial n. (C7 primary, C8) Action: Wrist extension, ulnar deviation (ADD) |
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Deep Posterior Compartment of the Forearm |
Supinator, Abductor pollicis longus, Extensor pollicis brevis, Extensor pollicis longus, Extensor indicis |
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Supinator m. |
Origin: Lateral epicondyle humerus, radial collateral ligament, annular lig, supinator fossa, crest of the ulna Insertion: Anterior lateral and posterior surfaces proximal radius Innervation: Deep branch radial n. (C6 primary, C7) Action: Forearm supination |
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Abductor pollicis longus m. |
Origin: Posterior radius and ulna, interosseious mem Insertion: Base 1st metacarpal Innervation: Posterior interosseous n. (C7, C8 primary, branch off deep branch radial n.) Action: Abduction of thumb |
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Extensor pollicis brevis m. |
Origin: Posterior surface distal 1/3 radius, interosseous mem Insertion: Base proximal phalanx 1st digit Innervation: Posterior interosseous n. (C7, C8 primary) Action: MCP extension 1st digit, aids in extension at CMC joint |
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Extensor pollicis longus m. |
Origin: Posterior surface middle 1/3 ulna, interosseous mem Insertion: Base distal phalanx digit 1 Innervation: Posterior interosseous n. (C7, C8 primary) Action: Extension IP joint of thumb, aids in MCP and CMC extension |
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Extensor indicis m. |
Origin: Posterior surface distal 1/3 ulna, interosseous mem Insertion: Extensor expansion digit 2 Innervation: Posterior interosseous n. (C7, C8 primary) Action: Extension of index finger |
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Anatomical snuff box |
Boundaries: Lateral: Tendons Abd. pollicis longus and Extensor pollicis brevis, Medial: Tendon extensor pollicis longus
Floor: Scaphoid and trapezium, radial syloid process, 1st metacarpal
Landmark: Radial a. passes through
Scaphoid most freq fractured carpal bond |
