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Anterior Forearm Lec
Gross Anatomy of the Anterior Forearm
| Question | Answer |
|---|---|
| Ulnar Landmarks | Olecranon Process, Coranoid Process, Trochlear Notch, Radial Notch, Ulnar Tuberosity, Styloid Process |
| Radius Landmarks | Radial Tuberosity, Distal Radial Tuberosity, Ulnar Notch, Styloid Process |
| Superficial Flexor Muscles | Pronator Teres, Flexor Carpi Radialis, Palmaris Longus, Flexor Carpi Ulnaris, Flexor Digitorum Superficialis |
| Deep Flexor Muscles | Flexor Digitorum Profundus, Flexor Pollicus Longus, Pronator Quadratus |
| All Flexor and Pronators Arise From What? | The medial epicondyle of the humerus |
| Innervation of Flexor and Pronators | Ulnar/Median Nerve except Brachioradialis which is innervated by Radial Nerve |
| Pronator Teres Proximal Att. | Medial Epicondyle of Humerus and Coranoid Process of Ulna |
| Pronator Teres Distal Att. | Lateral surface of radius |
| Pronator Teres Action | Pronates and flexes forearm |
| Pronator Teres Inn. | Median Nerve |
| FCR Prox. | Medial Epicondyle of Humerus |
| FCR Dist. | Base of 2nd metacarpal |
| FCR Action | Wrist flexion and abduction |
| FCR Inn. | Median Nerve |
| Palmaris Longus Prox. | Medial Epicondyle of Humerus |
| Palmaris Longus Dist. | Diston 1/2 of Flexor Retinaculum and Palmar Aponeurosis |
| Palmaris Longus Act. | Wrist flexion and tightens palmar aponeurosis |
| Palmaris Longus Inn. | Median Nerve |
| FCU Prox. | Medial epicondyle of humerus and olecranon/posterior border of humerus |
| FCU Dist. | Pisiform, Hook of Hamate, and 5th Metacarpal |
| FCU Act. | Wrist flexor and adductor (Ulnar Deviation) |
| FCU Inn. | Ulnar Nerve |
| FDS Prox. from Humeroulnar Head | Medial epicondyle of humerus, UCL, and coranoid process of ulna |
| FDS Prox. from Radial Head | Superior 1/2 of Anterior Radius |
| FDS Dist. | Bodies of middle phalanges of digits 2-5 |
| FDS Act. | Flexes phalanges 2-5 and proximal phalanges 2-5 |
| FDS Inn. | Median Nerve |
| FDP Prox. | Interosseous Membrane |
| FDP Dist. | Base of distal phalanges of digits 2-5 |
| FDP Act. | Flexes distal phalanges 2-5 and assists with wrist flexion |
| FDP Inn. | Medial Part- Ulnar Nerve / Lateral Part- Median Nerve |
| Flexor Pollicis Longus Prox. | Anterior Radial Surface |
| Flexor Pollicis Longus Dist. | Base of Distal Phalanx of Thumb |
| Flexor Pollicis Longus Act. | Flexes Thumb Phalanges |
| Flexor Pollicis Longus Inn. | Median Nerve |
| Pronator Quadratus Prox. | Distal 1/4 of Anterior Ulna |
| Pronator Quadratus Dist. | Distal 1/4 of Anterior Radius |
| Pronator Quadratus Act. | Pronates forearm |
| Pronator Quadratus Inn. | Median Nerve |
| Median Nerve | Principle anterior compartment nerve which runs deep to FDS and between FDS and FDP |
| Ulnar Nerve | Passes inferiorly btwn. FCU and FDP |
| Superficial Branch of Radial Nerve | Innervates skin, joints, and distal anterior forearm |
| Deep Branch of Radial Nerve | Continues as posterior interosseous nerve and pierces supinator |
| Arteries of Anterior Forearm | Radial is smaller and Ulnar is larger |
Created by:
frankfrank05
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