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Review Question - QID 7439

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QID 7439 (Type "7439" in App Search)
During an anterior approach to the shoulder, what is the most likely arterial structure to be encountered in the superior extent of the deltopectoral interval (just distal to the anterior edge of the clavicle)?

Acromial branch of the thoracoacromial artery

71%

957/1345

Axillary artery

9%

115/1345

Arcuate artery

8%

106/1345

Suprascapular artery

7%

89/1345

Subclavian artery

5%

63/1345

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The acromial branch of the thoracoacromial artery sits in the proximal interval between the anterior deltoid and the pectoralis major and is likely to be encountered when the proximal plane between these two muscles is dissected to the anterior edge of the clavicle. The axillary artery runs inferior to the humeral head. The arcuate artery runs in the intertubercular groove. The suprascapular artery runs superior to the clavicle and deep to the trapezius. The subclavian artery is medial to the coracoid and should not be encountered in the deltopectoral interval. It is notable that the acromial branch of the thoracoacromial artery is responsible for the bleeding encountered in release of the coracoacromial ligament.

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