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Journal of Athletic Training logoLink to Journal of Athletic Training
. 2000 Jul-Sep;35(3):248–255.

Functional Anatomy of the Shoulder

Glenn C Terry 1, Thomas M Chopp 1
PMCID: PMC1323385  PMID: 16558636

Abstract

Objective:

Movements of the human shoulder represent the result of a complex dynamic interplay of structural bony anatomy and biomechanics, static ligamentous and tendinous restraints, and dynamic muscle forces. Injury to 1 or more of these components through overuse or acute trauma disrupts this complex interrelationship and places the shoulder at increased risk. A thorough understanding of the functional anatomy of the shoulder provides the clinician with a foundation for caring for athletes with shoulder injuries.

Data Sources:

We searched MEDLINE for the years 1980 to 1999, using the key words “shoulder,” “anatomy,” “glenohumeral joint,” “acromioclavicular joint,” “sternoclavicular joint,” “scapulothoracic joint,” and “rotator cuff.”

Data Synthesis:

We examine human shoulder movement by breaking it down into its structural static and dynamic components. Bony anatomy, including the humerus, scapula, and clavicle, is described, along with the associated articulations, providing the clinician with the structural foundation for understanding how the static ligamentous and dynamic muscle forces exert their effects. Commonly encountered athletic injuries are discussed from an anatomical standpoint.

Conclusions/Recommendations:

Shoulder injuries represent a significant proportion of athletic injuries seen by the medical provider. A functional understanding of the dynamic interplay of biomechanical forces around the shoulder girdle is necessary and allows for a more structured approach to the treatment of an athlete with a shoulder injury.

Keywords: anatomy, static, dynamic, stability, articulation

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. BASMAJIAN J. V., BAZANT F. J. Factors preventing downward dislocation of the adducted shoulder joint. An electromyographic and morphological study. J Bone Joint Surg Am. 1959 Oct;41-A:1182–1186. [PubMed] [Google Scholar]
  2. Bearn J. G. Direct observations on the function of the capsule of the sternoclavicular joint in clavicular support. J Anat. 1967 Jan;101(Pt 1):159–170. [PMC free article] [PubMed] [Google Scholar]
  3. Boardman N. D., Debski R. E., Warner J. J., Taskiran E., Maddox L., Imhoff A. B., Fu F. H., Woo S. L. Tensile properties of the superior glenohumeral and coracohumeral ligaments. J Shoulder Elbow Surg. 1996 Jul-Aug;5(4):249–254. doi: 10.1016/s1058-2746(96)80050-4. [DOI] [PubMed] [Google Scholar]
  4. Cooper D. E., Arnoczky S. P., O'Brien S. J., Warren R. F., DiCarlo E., Allen A. A. Anatomy, histology, and vascularity of the glenoid labrum. An anatomical study. J Bone Joint Surg Am. 1992 Jan;74(1):46–52. [PubMed] [Google Scholar]
  5. Gibb T. D., Sidles J. A., Harryman D. T., 2nd, McQuade K. J., Matsen F. A., 3rd The effect of capsular venting on glenohumeral laxity. Clin Orthop Relat Res. 1991 Jul;(268):120–127. [PubMed] [Google Scholar]
  6. Hall M. C., Rosser M. The Structure of the Upper End of the Humerus with Reference to Osteoporotic Changes in Senescence Leading to Fractures. Can Med Assoc J. 1963 Feb 9;88(6):290–294. [PMC free article] [PubMed] [Google Scholar]
  7. Hertz H. Die Bedeutung des Limbus glenoidalis für die Stabilität des Schultergelenks. Wien Klin Wochenschr Suppl. 1984;152:1–23. [PubMed] [Google Scholar]
  8. Howell S. M., Galinat B. J., Renzi A. J., Marone P. J. Normal and abnormal mechanics of the glenohumeral joint in the horizontal plane. J Bone Joint Surg Am. 1988 Feb;70(2):227–232. [PubMed] [Google Scholar]
  9. Howell S. M., Galinat B. J. The glenoid-labral socket. A constrained articular surface. Clin Orthop Relat Res. 1989 Jun;(243):122–125. [PubMed] [Google Scholar]
  10. Kronberg M., Broström L. A., Söderlund V. Retroversion of the humeral head in the normal shoulder and its relationship to the normal range of motion. Clin Orthop Relat Res. 1990 Apr;(253):113–117. [PubMed] [Google Scholar]
  11. Ljunggren A. E. Clavicular function. Acta Orthop Scand. 1979 Jun;50(3):261–268. doi: 10.3109/17453677908989766. [DOI] [PubMed] [Google Scholar]
  12. McCluskey G. M., 3rd, Todd J. Acromioclavicular joint injuries. J South Orthop Assoc. 1995 Fall;4(3):206–213. [PubMed] [Google Scholar]
  13. McMahon P. J., Debski R. E., Thompson W. O., Warner J. J., Fu F. H., Woo S. L. Shoulder muscle forces and tendon excursions during glenohumeral abduction in the scapular plane. J Shoulder Elbow Surg. 1995 May-Jun;4(3):199–208. doi: 10.1016/s1058-2746(05)80052-7. [DOI] [PubMed] [Google Scholar]
  14. O'Brien S. J., Neves M. C., Arnoczky S. P., Rozbruck S. R., Dicarlo E. F., Warren R. F., Schwartz R., Wickiewicz T. L. The anatomy and histology of the inferior glenohumeral ligament complex of the shoulder. Am J Sports Med. 1990 Sep-Oct;18(5):449–456. doi: 10.1177/036354659001800501. [DOI] [PubMed] [Google Scholar]
  15. Pagnani M. J., Deng X. H., Warren R. F., Torzilli P. A., Altchek D. W. Effect of lesions of the superior portion of the glenoid labrum on glenohumeral translation. J Bone Joint Surg Am. 1995 Jul;77(7):1003–1010. doi: 10.2106/00004623-199507000-00005. [DOI] [PubMed] [Google Scholar]
  16. Pagnani M. J., Deng X. H., Warren R. F., Torzilli P. A., O'Brien S. J. Role of the long head of the biceps brachii in glenohumeral stability: a biomechanical study in cadavera. J Shoulder Elbow Surg. 1996 Jul-Aug;5(4):255–262. doi: 10.1016/s1058-2746(96)80051-6. [DOI] [PubMed] [Google Scholar]
  17. Poppen N. K., Walker P. S. Normal and abnormal motion of the shoulder. J Bone Joint Surg Am. 1976 Mar;58(2):195–201. [PubMed] [Google Scholar]
  18. Powell J. W., Barber-Foss K. D. Injury patterns in selected high school sports: a review of the 1995-1997 seasons. J Athl Train. 1999 Jul;34(3):277–284. [PMC free article] [PubMed] [Google Scholar]
  19. Randelli M., Gambrioli P. L. Glenohumeral osteometry by computed tomography in normal and unstable shoulders. Clin Orthop Relat Res. 1986 Jul;(208):151–156. [PubMed] [Google Scholar]
  20. Rodosky M. W., Harner C. D., Fu F. H. The role of the long head of the biceps muscle and superior glenoid labrum in anterior stability of the shoulder. Am J Sports Med. 1994 Jan-Feb;22(1):121–130. doi: 10.1177/036354659402200119. [DOI] [PubMed] [Google Scholar]
  21. Rose S. H., Melton L. J., 3rd, Morrey B. F., Ilstrup D. M., Riggs B. L. Epidemiologic features of humeral fractures. Clin Orthop Relat Res. 1982 Aug;(168):24–30. [PubMed] [Google Scholar]
  22. Soslowsky L. J., Flatow E. L., Bigliani L. U., Mow V. C. Articular geometry of the glenohumeral joint. Clin Orthop Relat Res. 1992 Dec;(285):181–190. [PubMed] [Google Scholar]
  23. Steinbrück K. Epidemiologie von Sportverletzungen--25-Jahres-Analyse einer sportorthopädisch-traumatologischen Ambulanz. Sportverletz Sportschaden. 1999 Jun;13(2):38–52. doi: 10.1055/s-2007-993313. [DOI] [PubMed] [Google Scholar]
  24. Ticker J. B., Djurasovic M., Strauch R. J., April E. W., Pollock R. G., Flatow E. L., Bigliani L. U. The incidence of ganglion cysts and other variations in anatomy along the course of the suprascapular nerve. J Shoulder Elbow Surg. 1998 Sep-Oct;7(5):472–478. doi: 10.1016/s1058-2746(98)90197-5. [DOI] [PubMed] [Google Scholar]
  25. Turkel S. J., Panio M. W., Marshall J. L., Girgis F. G. Stabilizing mechanisms preventing anterior dislocation of the glenohumeral joint. J Bone Joint Surg Am. 1981 Oct;63(8):1208–1217. [PubMed] [Google Scholar]
  26. Warner J. J., Deng X. H., Warren R. F., Torzilli P. A. Static capsuloligamentous restraints to superior-inferior translation of the glenohumeral joint. Am J Sports Med. 1992 Nov-Dec;20(6):675–685. doi: 10.1177/036354659202000608. [DOI] [PubMed] [Google Scholar]
  27. Warner J. P., Krushell R. J., Masquelet A., Gerber C. Anatomy and relationships of the suprascapular nerve: anatomical constraints to mobilization of the supraspinatus and infraspinatus muscles in the management of massive rotator-cuff tears. J Bone Joint Surg Am. 1992 Jan;74(1):36–45. [PubMed] [Google Scholar]

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