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The incidence and characteristics of shoulder instability at the United States Military Academy.

Publication ,  Journal Article
Owens, BD; Duffey, ML; Nelson, BJ; DeBerardino, TM; Taylor, DC; Mountcastle, SB
Published in: Am J Sports Med
July 2007

BACKGROUND: The literature provides little information detailing the incidence of traumatic shoulder instability in young, healthy athletes. HYPOTHESIS: Shoulder instability is common in young athletes. STUDY DESIGN: Descriptive epidemiologic study. METHODS: We prospectively captured all traumatic shoulder instability events at the United States Military Academy between September 1, 2004, and May 31, 2005. Throughout this period, all new traumatic shoulder instability events were evaluated with physical examination, plain radiographs, and magnetic resonance imaging. Instability events were classified according to direction, chronicity, and type (subluxation or dislocation). Subject demographics, mechanism of injury, and sport were evaluated. RESULTS: Among 4141 students, 117 experienced new traumatic shoulder instability events during the study period; 11 experienced multiple events. The mean age of these 117 subjects was 20.0 years; 101 students were men (86.3%), and 16 were women (13.7%). The 1-year incidence proportion was 2.8%. The male incidence proportion was 2.9% and the female incidence proportion was 2.5%. Eighteen events were dislocations (15.4%), and 99 were subluxations (84.6%). Of the 99 subluxations, 45 (45.5%) were primary events, while 54 (54.5%) were recurrent. Of the 18 dislocations, 12 (66.7%) were primary events, while 6 (33.3%) were recurrent. The majority of the 117 events were anterior in nature (80.3%), while 12 (10.3%) were posterior, and 11 (9.4%) were multidirectional. Forty-four percent (43.6%) of the instability events experienced were as a result of contact injuries, while 41.0% were a result of noncontact injuries, including 9 subluxations caused by missed punches during boxing; information was unavailable for the remaining 15%. CONCLUSION: Glenohumeral instability is a common injury in this population, with subluxations comprising 85% of instability events.

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Published In

Am J Sports Med

DOI

ISSN

0363-5465

Publication Date

July 2007

Volume

35

Issue

7

Start / End Page

1168 / 1173

Location

United States

Related Subject Headings

  • United States
  • Students
  • Shoulder Injuries
  • Shoulder Dislocation
  • Risk Factors
  • Range of Motion, Articular
  • Prospective Studies
  • Orthopedics
  • New York
  • Military Personnel
 

Citation

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Owens, B. D., Duffey, M. L., Nelson, B. J., DeBerardino, T. M., Taylor, D. C., & Mountcastle, S. B. (2007). The incidence and characteristics of shoulder instability at the United States Military Academy. Am J Sports Med, 35(7), 1168–1173. https://doi.org/10.1177/0363546506295179
Owens, Brett D., Michele L. Duffey, Bradley J. Nelson, Thomas M. DeBerardino, Dean C. Taylor, and Sally B. Mountcastle. “The incidence and characteristics of shoulder instability at the United States Military Academy.Am J Sports Med 35, no. 7 (July 2007): 1168–73. https://doi.org/10.1177/0363546506295179.
Owens BD, Duffey ML, Nelson BJ, DeBerardino TM, Taylor DC, Mountcastle SB. The incidence and characteristics of shoulder instability at the United States Military Academy. Am J Sports Med. 2007 Jul;35(7):1168–73.
Owens, Brett D., et al. “The incidence and characteristics of shoulder instability at the United States Military Academy.Am J Sports Med, vol. 35, no. 7, July 2007, pp. 1168–73. Pubmed, doi:10.1177/0363546506295179.
Owens BD, Duffey ML, Nelson BJ, DeBerardino TM, Taylor DC, Mountcastle SB. The incidence and characteristics of shoulder instability at the United States Military Academy. Am J Sports Med. 2007 Jul;35(7):1168–1173.
Journal cover image

Published In

Am J Sports Med

DOI

ISSN

0363-5465

Publication Date

July 2007

Volume

35

Issue

7

Start / End Page

1168 / 1173

Location

United States

Related Subject Headings

  • United States
  • Students
  • Shoulder Injuries
  • Shoulder Dislocation
  • Risk Factors
  • Range of Motion, Articular
  • Prospective Studies
  • Orthopedics
  • New York
  • Military Personnel