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6.1Upper Limb

Clavicle

COA

654

32

Superior Surface

Inferior Surface

1

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Clavicle1. Sternal end2. Shaft3. Acromial end4. Subclavian groove5. Conoid tubercle6. Trapezoid line

© 2008 Lippincott Williams & Wilkins

The clavicle, the first bone to ossify, is highly variable inshape and size and is one of the most commonly fracturedbones. Fracture is usually evident by the palpable elevation ofthe medial portion from action of the sternocleidomastoid anddropping of the shoulder from the unsupported weight of theupper limb.

COA

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Upper Limb

Grant’s

6.19

Brachial Plexus, Axillary Vein Removed

12

3

4

5

6

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© 2008 Lippincott Williams & Wilkins

Injuries to the inferior parts of the brachial plexus occur whenthe upper limb is pulled superiorly, as in grasping somethingto break a fall or as a baby’s upper limb is pulled during de-livery. The intrinsic muscles of the hand are involved, result-ing in claw hand.

Brachial Plexus, Axillary Vein Removed1. suprascapular nerve2. posterior cord3. radial nerve4. axillary nerve5. subscapular trunk6. long thoracic nerve

COA

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Upper Limb

Grant’s

6.43

Acromioclavicular Joint

6

1 2 34

5

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© 2008 Lippincott Williams & Wilkins

Dislocation of the acromioclavicular joint, or shoulder separa-tion, is relatively common in sports or falls that jar the shoul-der. Rupture of the coracoacromial ligament is evidenced by aprominent acromion and the upper limb falling.

Acromioclavicular Joint1. superior acromioclavicular ligament2. coracoacromial ligament3. trapezoid ligament4. conoid ligament5. clavicle6. transverse humeral ligament

COA

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