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Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events.

Publication ,  Journal Article
Owens, BD; Nelson, BJ; Duffey, ML; Mountcastle, SB; Taylor, DC; Cameron, KL; Campbell, S; DeBerardino, TM
Published in: J Bone Joint Surg Am
July 7, 2010

BACKGROUND: Relative to dislocations, glenohumeral subluxation events have received little attention in the literature, despite a high incidence in young athletes. The pathoanatomy of first-time, traumatic, anterior subluxation events has not been defined, to our knowledge. METHODS: As part of a prospective evaluation of all cases of shoulder instability sustained during one academic year in a closed cohort of military academy cadets, a total of thirty-eight first-time, traumatic, anterior glenohumeral subluxation events were documented. Clinical subluxation events were defined as incomplete instability events that did not require a manual reduction maneuver. Twenty-seven of those events were evaluated with plain radiographs and magnetic resonance imaging within two weeks after the injury and constitute the cohort studied. Magnetic resonance imaging studies were independently evaluated by a musculoskeletal radiologist blinded to the clinical history. Arthroscopic findings were available for the fourteen patients who underwent arthroscopic surgery. RESULTS: Of the twenty-seven patients who sustained a first-time, traumatic, anterior subluxation, twenty-two were male and five were female, and their mean age was twenty years. Plain radiographs revealed three osseous Bankart lesions and two Hill-Sachs lesions. Magnetic resonance imaging revealed a Bankart lesion in twenty-six of the twenty-seven patients and a Hill-Sachs lesion in twenty-five of the twenty-seven patients. Of the fourteen patients who underwent surgery, thirteen had a Bankart lesion noted during the procedure. Of the thirteen patients who chose nonoperative management, four experienced recurrent instability. Two of the thirteen patients left the academy for nonmedical reasons and were lost to follow-up. The remaining seven patients continued on active-duty service and had not sought care for a recurrent instability event at the time of writing. CONCLUSIONS: First-time, traumatic, anterior subluxation events result in a high rate of labral and Hill-Sachs lesions. These findings suggest that clinical subluxation events encompass a broad spectrum of incomplete events, including complete separations of the articular surfaces with spontaneous reduction. A high index of suspicion for this injury in young athletes is warranted, and magnetic resonance imaging may reveal a high rate of pathologic changes, suggesting that a complete, transient luxation of the glenohumeral joint has occurred.

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Published In

J Bone Joint Surg Am

DOI

EISSN

1535-1386

Publication Date

July 7, 2010

Volume

92

Issue

7

Start / End Page

1605 / 1611

Location

United States

Related Subject Headings

  • Young Adult
  • Shoulder Injuries
  • Shoulder Dislocation
  • Radiography
  • Prospective Studies
  • Orthopedics
  • Male
  • Magnetic Resonance Imaging
  • Joint Instability
  • Humans
 

Citation

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ICMJE
MLA
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Owens, B. D., Nelson, B. J., Duffey, M. L., Mountcastle, S. B., Taylor, D. C., Cameron, K. L., … DeBerardino, T. M. (2010). Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events. J Bone Joint Surg Am, 92(7), 1605–1611. https://doi.org/10.2106/JBJS.I.00851
Owens, Brett D., Bradley J. Nelson, Michele L. Duffey, Sally B. Mountcastle, Dean C. Taylor, Kenneth L. Cameron, Scot Campbell, and Thomas M. DeBerardino. “Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events.J Bone Joint Surg Am 92, no. 7 (July 7, 2010): 1605–11. https://doi.org/10.2106/JBJS.I.00851.
Owens BD, Nelson BJ, Duffey ML, Mountcastle SB, Taylor DC, Cameron KL, et al. Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events. J Bone Joint Surg Am. 2010 Jul 7;92(7):1605–11.
Owens, Brett D., et al. “Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events.J Bone Joint Surg Am, vol. 92, no. 7, July 2010, pp. 1605–11. Pubmed, doi:10.2106/JBJS.I.00851.
Owens BD, Nelson BJ, Duffey ML, Mountcastle SB, Taylor DC, Cameron KL, Campbell S, DeBerardino TM. Pathoanatomy of first-time, traumatic, anterior glenohumeral subluxation events. J Bone Joint Surg Am. 2010 Jul 7;92(7):1605–1611.

Published In

J Bone Joint Surg Am

DOI

EISSN

1535-1386

Publication Date

July 7, 2010

Volume

92

Issue

7

Start / End Page

1605 / 1611

Location

United States

Related Subject Headings

  • Young Adult
  • Shoulder Injuries
  • Shoulder Dislocation
  • Radiography
  • Prospective Studies
  • Orthopedics
  • Male
  • Magnetic Resonance Imaging
  • Joint Instability
  • Humans