Atlas of Human Anatomy by Netter

A fibrocartilaginous articular disc binds the ends of the radius and ulna and is strengthened by anterior and posterior ligaments

Disc separates cavity of joint from cavity of wrist joint

Pronation and supination: distal end of radius moves anteriorly and medially across the ulna

Blood supply: anterior and posterior interosseous arteries

Nerve supply: posterior interosseous nerve

Carrying angle

The angle between the long axis of the humerus and the long axis of the ulna with forearm fully extended and supinated in the

anatomical position

Ten to 15 degrees in males, more than 15 degrees in females (figures are for deviations from 180 degrees)

Bursae (important ones)

Subcutaneous olecranon bursa: Overlies olecranon in subcutaneous tissue

Subtendinous olecranon bursa: Between the olecranon and triceps tendon

Bicipitoradial bursa: Between biceps tendon and anterior part of radial tuberosity

Fascial Compartments of Forearm

Forearm divided into anterior and posterior compartments by interosseous membrane

Antebrachial fascia is thickened at distal end of radius

Posteriorly forms extensor retinaculum

Anteriorly forms palmar carpal ligament

Also forms flexor retinaculum (transverse carpal ligament) distal and deeper to palmar carpal ligament

Carpal tunnel formed between flexor retinaculum, running between tubercles of scaphion and trapezium radially to pisiform and hook of

hamate on ulnar side, and anterior concavity of the carpus

Muscles of the Forearm (listed from lateral to medial)

[Plate 429, Individual Muscles of Forearm: Extensors of Wrist and Digits]