Muscles of the forearm Flashcards
What are the compartments of the distal humerus?
Lateral; Extensor/Supinator compartment
Medial; Flexor/Pronator compartment
What are the two common origins for the forearm compartments?
Lateral epicondyle; Common extensor tendon of the forearm (Posterior compartment)
Medial epicondyle; Common flexor tendon of the forearm (Anterior compartment)
What are the muscles on the lateral supercondylar crest that insert in the post. compartment of the forearm?
Brachioradialis (a flexor even though ends in extensor compartment)
Extensor carpi radialis longus
What are the muscles on the medial supercondylar crest that insert in the Ant. compartment of the forearm?
Pronator teres
What are the muscles that insert on the forearm that do not originate from the common tendons?
Biceps brachii
Brachialis
Pronator teres
Brachioradialis
Extensor carpi radialis
Triceps brachii`
How many muscles are in the forearm anterior compartment?
8
What are the anterior forearm compartment muscles?
Superificial;
Pronator teres
Flexor carpi ulnaris
Palmaris longus
Flexor carpi radialis
Intermediate;
Flexor digitorium superficialis
Deep;
Pronator quadratus
Flexor digitorium profundus
Flexor pollicis longus
What are the nerve supplies of the ant. forearm?
Median and ulnar
How many muscles do the median and ulnar nerves innervate in the ant. forearm?
Median; 6.5
Ulnar 2.5
Name the muscles the median and ulnar nerve innervate in the ant. forearm;
Median; PT, FCR, PL, FDS, PQ and Lat. 1/2 of FDP
Ulnar; FCU and Medial half of FDP
What are the muscles of the posterior forearm?
Sup. = BR, A, ECRL, ECRB, ED, EDM, ECU
Deep. = EI, EPL, APL, EPB, SuP
What supplies the post. forearm?
Radial nerve.
