1. FOREARM (ANTEBRACHIUM)

2. Fascial compartments Interosseous membrane Compartment syndrome

3. Flexor Forearm - Generalizations -Attachment: medial epicondyle of Humerus -Innervation: Median n. (except 1.5 muscles-Ulnar n.) -Function: Flexion * KNOW DISTAL ATTACHMENTS….!

4. Flexor Forearm - Superficial PT: Pronator Teres FCR: Flexor Carpi Radialis PL: Palmaris Longus FCU: Flexor Carpi Ulnaris BR*: Brachioradialis

5. Flexor Forearm - Intermediate FDS: Flexor Digitalum superficialis-flexes digits 2,3,4,5…tendon biforcates. Innervated by median n. Attachment at radius and lateral epicondyle of Humerus.

6. Flexor Forearm - Deep FDP: Flexor Digitorum Profundus-attaches to base of distal phalanges 2,3,4,5-flexes digits, helps flex wrist-muscle has 2 halves…the tendons going to digits 4 & 5 ulnar nerve & those going to digits 2 &3 innervated by median n. FPL: Flexus Pollicis Longus (pollex=thumb)- from radius to distal phalynx, thumb. (looks like a feather) PQ: Pronator Quatratus- attaches distal ulna to distal radius

7. Lumbrical muscles...big red (4 of them)

9. Flexor retinaculum (AKA: transverse carpal ligament) Attaches to pisaform, trapesium, scaphoid, …. What 10 things pass through? Median n., FDS tendons (4), FDP tendons (4), Flexor Pollicis Longus (feather) The Carpal Tunnel

10. Extensor Forearm – Generalizations -Attachment: lateral epicondyle -Innervation: radial n. -Function: extension

11. Extensor Forearm - Superficial ECRL: extensor carpi radialis longus ECRB: extensor carpi radialis brevis ED: extensor digitorum EDM: extensor digiti minimi ECU: extensor carpi minimi

12. Extensor Forearm - Deep APL: Abductor Pollicis Longus EPB: Extensor Pollicis Brevis (brevis=short) (stops at proximal phalanx) EPL: Extensor Pollicis Longus (attaches to distal phalanx) EI: Extensor Indicis…extends the Index finger Supinator: supinates the forearm Anconeus*: purple, wraps around, allows supination

13. Anatomical Snuff Box Contents: Radial A. & Scaphoid Bone

14. Extensor Retinaculum Extensor Expansion (Hood)-sheath- Like tendon that is like a sheath on Digits 2-5 crossing whole posterior phalanx

17. Forearm – Vessels/Nerves

25. PROBLEM SPOTS FOR NERVES: Median N. – b/w 2 heads pronator teres m. (up At the elbow where it enters the elbow) At medial Epicondyle Ulnar N. – b/w 2 heads of FCU Radial N. (deep) – through supinator muscle, ex- Tends up lateral epicondyle.