前臂解剖图谱幻灯解读.ppt

GROSS ANATOMY OF THE FOREARM Chen yonghua Main Menu Bones of the forearm. Superficial muscles of the anterior compartment. Deep muscles of the anterior compartment. Arteries and nerves of the anterior compartment. Superficial muscles of the posterior compartment. Deep muscles of the posterior compartment. Arteries and nerves of the posterior compartment. Bones of the forearm The radius proximally articulates with the humerus at the elbow joint. Distally it articulates with the scaphoid and lunate bones of the carpus, and with the ulna at the distal radioulnar joint. The ulna is the more medial of the two bones. Its proximal end articulates with the humerus at the elbow joint. Distally it articulates with the radius. It is excluded from the wrist joint by the articular disc. The interosseous membrane bind the radius and the ulna together. 总体记忆 前臂共有18块肌肉 分为屈肌与伸肌二部分 屈肌8块 分为浅层与深层 浅层有5块 深层有3块 伸肌10块 浅深各5块 前臂8块屈肌 浅层5块 旋前圆肌 桡侧屈腕肌 掌长肌 指浅屈肌 尺侧屈腕肌 Superficial muscles of the anterior compartment. Title page. Pronator Teres The pronator teres has two heads, the humeral head and the ulnar head. The median nerve enters the forearm between the two heads. Origin :- Humeral head- Medial epicondyle of the humerus. Ulnar head- Medial border of the coronoid process of the ulna. Insertion :- Lateral aspect of the shaft of the radius. Nerve supply :- Median nerve, C6 and C7. Action :- Pronation of the forearm. Flexion of the forearm. Flexor carpi radialis, palmaris longus, and flexor carpi ulnaris Flexor carpi radialis Origin:- Medial epicondyle of the humerus. Insertion:- Base of the second and third metacarpal bones. Nerve supply:- Median nerve, C6 and C7. Action:- Flexes the hand at the wrist joint. Abducts the hand at the wrist joint. Palmaris longus Origin:- Medial epicondyle of the humerus. Insertion:- Flexor retinaculum and palmar aponeurosis. Nerve supply:- Median nerve, C7 and C8 Action:- Flexes the h