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Anterior Forearm Lec

Gross Anatomy of the Anterior Forearm

QuestionAnswer
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