The interosseous membrane bind the radius and the ulna together.
Fig 1. Anterior view of bones of the forearm.
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总体记忆
• 前臂共有18块肌肉
• 分为屈肌与伸肌二部分
Nerve supply :- Median nerve, C6 and C7.
rearm. Flexion of the forearm.
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*Flexor carpi radialis, palmaris longus, and flexor
GROSS ANATOMY OF THE FOREARM
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丁香园
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.
FOR FURTHER DETAILS CLICK ON EACH INDIVIDUAL MUSCLE BELOW.
1. Pronator teres
2. Flexor carpi radialis
3. Flexor carpi ulnaris
4. Flexor digitorum superficialis
5. Palmaris longus (not included in the diagram).
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Pronator Teres[5te7ri:z]
Pronator teres
Radius
Fig 3. Pronator teres.
The pronator teres has two heads, the humeral head and the ulnar head. The median nerve 正中神经enters the forearm between the two heads.
Origin :Humeral head- Medial epicondyle of the humerus. Ulnar head- Medial border of the coronoid process冠突,冠状突of the ulna.
Insertion附着 :Lateral aspect of the shaft of the radius.
carpi ulnaris
Palmaris longus
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.
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.
• 屈肌8块 • 分为浅层与深层
前臂屈肌
• 浅层有5块 • 深层有3块
屈肌8块
伸肌10块
• 伸肌10块 • 浅深各5块
浅5 深3
浅5
深5
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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
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Superficial muscles of the anterior compartment. Title page.
Brachioradialis
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Fig 2. Showing superficial muscles of the posterior compartment.
The superficial muscles of the anterior compartment include pronator teres旋前圆肌, flexor carpi radialis桡侧腕屈肌, palmaris longus掌长肌, and flexor carpi ulnaris. Also included in this group is flexor digitorum superficialis. The superficial group of muscles all have the same origin, which is attached to the medial epicondyle of the humerus 肱骨内上髁.
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Head
Interosseous membrane
Radius
Bones of the forearm
Humerus Tuberosity of radius Ulna
Head
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.