Blood flow changes of the anterior humeral circumflex artery decrease with the scapula in internal rotation
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Poor posture is strongly related to scapular kinematics and shoulder diseases. The purpose of this study was to clarify the blood flow changes of the anterior and posterior humeral circumflex arteries in reference to the scapular position and to clarify anatomical features related to the changes in blood flow.
Cadaveric shoulders were dissected to elucidate the anatomical difference between the two arteries. The blood flow of these arteries in healthy volunteers (22–48 years, 113 shoulders) was evaluated by MRI with changing the position of the scapula (internal and external rotation).
The anterior humeral circumflex artery was attached to the subscapularis tendon and located beneath the subdeltoid bursa. The posterior humeral circumflex artery was located between the deltoid muscle and the bursa, which allowed free movement during scapular motion. There were no direct extraosseous anastomoses between the two arteries. Compared with the posterior humeral circumflex artery, the anterior humeral circumflex artery decreased blood flow with the scapula in internal rotation.
No direct extraosseous anastomoses between the two arteries were observed. Internal rotation of the scapula decreased blood flow of the anterior humeral circumflex artery, which might be related to various pathologies of the shoulder.
Level of evidence
Diagnostic studies, Level III.
KeywordsHumeral circumflex artery Shoulder MRI Blood flow Scapular position Posture
Conflict of interest
The authors declare that they have no conflict of interest.
- 5.Codman EA (1934) The shoulder. Thomas Todd, Boston, pp 123–177Google Scholar
- 7.Duplay ES (1896) De la perarthite scapula-humerale. Rev Frat Trav Med 53:226Google Scholar
- 11.Grimsby O, Gray J (1997) Interrelation of the spine to the shoulder girdle. In: Donatelli R (ed) Physical therapy of the shoulder, 3rd edn. Churchill Livingstone, New York, pp 95–129Google Scholar
- 28.Solem-Bertoft E (1999) Painful shoulder disorders from a physiotherapeutic view: a review of literature. Crit Rev Phys Rehabil Med 11:229–277Google Scholar
- 30.Urwin M, Symmons D, Allison T, Brammah T, Busby H, Roxby M, Simmons A et al (1998) Estimating the burden of musculoskeletal disorders in the community: the comparative prevalence of symptoms at different anatomical sites, and the relation to social deprivation. Ann Rheum Dis 57:649–655CrossRefPubMedCentralPubMedGoogle Scholar