Association of generalized joint hypermobility with a history of glenohumeral joint instability.
BACKGROUND
Little is known about the relationship among sex, generalized joint hypermobility, and glenohumeral joint instability.


OBJECTIVE
To examine the relationship among sex, generalized joint hypermobility scores, and a history of glenohumeral joint instability within a young, physically active cohort and to describe the incidence of generalized joint hypermobility within this population.


METHODS
Cross-sectional cohort study.


METHODS
United States Military Academy at West Point, New York.


METHODS
Of the 1311 members of the entering freshman class of 2010, 1050 (80%) agreed to participate.


METHODS
Generalized joint hypermobility was assessed using the Beighton Scale. A history of glenohumeral joint instability was identified via a baseline questionnaire.


RESULTS
Most participants (78%) had no signs of generalized joint hypermobility. Only 11 volunteers (1.5%) had Beighton Scale scores of 4 or greater. Logistic regression analysis revealed a relationship between generalized joint hypermobility and a history of glenohumeral joint instability (P = .023). When sex and race were controlled, those with a total Beighton Scale score of >or=2 were nearly 2.5 times as likely (odds ratio = 2.48, 95% confidence interval = 1.19, 5.20, P = .016) to have reported a history of glenohumeral joint instability. A relationship was observed between sex and nearly all individual Beighton Scale items. Although women had higher total Beighton Scale scores than men, sex (P = .658) and race (P = .410) were not related to a history of glenohumeral joint instability when other variables in the model were controlled.


CONCLUSIONS
In these participants, generalized joint hypermobility and a history of glenohumeral joint instability were associated.
Cameron
Kenneth L
KL
Department of Orthopaedic Surgery and Physical Therapy, Keller Army Hospital, West Point, NY 10996, USA. kenneth.cameron@amedd.army.mil
Duffey
Michele L
ML
DeBerardino
Thomas M
TM
Stoneman
Paul D
PD
Jones
Christopher J
CJ
Owens
Brett D
BD
D000293:Adolescent; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D015994:Incidence; D007593:Joint Instability / Q000175:diagnosis* / Q000453:epidemiology / Q000473:pathology; D016015:Logistic Models; D008297:Male; D008889:Military Personnel; D009518:New York / Q000453:epidemiology; D016017:Odds Ratio; D011446:Prospective Studies; D011594:Psychometrics; D018570:Risk Assessment; D012307:Risk Factors; D000070599:Shoulder Injuries; D012785:Shoulder Joint / Q000473:pathology; D011795:Surveys and Questionnaires; D055815:Young Adult
Am J Sports Med. 1997 Sep-Oct;25(5):609-13
9302464
Clin Orthop Relat Res. 2000 Mar;(372):110-22
10738420
Am J Sports Med. 1996 Nov-Dec;24(6):716-20
8947390
J Bone Joint Surg Am. 2009 Apr;91(4):791-6
19339562
J Athl Train. 1999 Apr;34(2):99-105
16558566
Eur J Obstet Gynecol Reprod Biol. 1997 Jun;73(2):189-92
9228503
J Am Osteopath Assoc. 2006 Sep;106(9):531-6
17079522
J Bone Joint Surg Br. 1969 Aug;51(3):444-53
5820785
Ann Rheum Dis. 1973 Sep;32(5):413-8
4751776
J Bone Joint Surg Am. 1980 Sep;62(6):897-908
7430177
J Rheumatol. 2001 Dec;28(12):2726-30
11764224
Arch Pediatr Adolesc Med. 1997 Oct;151(10):989-92
9343008
J Shoulder Elbow Surg. 1995 Mar-Apr;4(2):107-12
7600160
Med J Malaysia. 2004 Dec;59 Suppl F:19-23
15941156
East Afr Med J. 2002 Feb;79(2):80-1
12380882
Arch Orthop Trauma Surg. 1989;108(5):288-90
2789505
Clin Orthop Relat Res. 1984 Jun;(186):186-91
6723141
Am J Sports Med. 2007 Jul;35(7):1168-73
17581976
Rheumatology (Oxford). 2007 Dec;46(12):1835-41
18006569
Am J Sports Med. 1990 Jul-Aug;18(4):366-75
2403184
J Athl Train. 2002 Dec;37(4):376-380
12937558
J Bone Joint Surg Br. 2005 Jun;87(6):800-3
15911662
Br J Rheumatol. 1985 Nov;24(4):326-31
4063624
Med Sci Sports Exerc. 2000 Oct;32(10):1685-90
11039638
J Rheumatol. 1992 Jan;19(1):115-22
1556672
Clin J Sport Med. 1996 Jan;6(1):40-7
8925365
Am J Sports Med. 2008 Jun;36(6):1073-80
18326833
J Bone Joint Surg Br. 1964 Feb;46:40-5
14126235
J Bone Joint Surg Am. 1992 Dec;74(10):1516-21
1469011
Rheumatol Int. 2005 May;25(4):260-3
14745505
J Am Acad Orthop Surg. 1993 Oct;1(1):24-32
10675853
Br J Sports Med. 2005 Sep;39(9):628-31
16118300
Phys Ther. 1999 Jun;79(6):591-9
10372870
Am J Sports Med. 1996 Jul-Aug;24(4):468-71
8827305