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44 Abstracts / Journal of Science an

ariables it was possible to correctly classify 72% of thelayers into the injury and non injury groups. These resultsuggest that reduced range of hip and ankle motion maydversely affect the lower kinetic chain. In contrast, the exces-ive motion in the foot and through the thoracic region mayepresent an adaptation to reduced motion in other regions.hese results also provide direction for rehabilitation pro-rams designed to reduce injury and provide a means foronitoring the physical status of cricket athletes over the

ourse of a season.

oi:10.1016/j.jsams.2009.10.092

2

roin pain and hip range of motion is different inndigenous compared to non-Indigenous young Aus-ralian football players

. Taylor 1,2,∗, J. Cook 2, T. Pizzari 1, N. Ames 3,4, T.ood 5, B. Gabbe 6, M. Makdissi 7, E. Scase 8, J. McNeil 6,

. Orchard 9

School of Physiotherapy, LaTrobe UniversityExercise and Nutritional Sciences, Deakin UniversityAIS-AFL AcademyGeelong Football ClubAFL Medical Officers AssociationEpidemiology and Preventive Medicine, Monash UniversityCentre for Health, Exercise and Sports Medicine, Universityf MelbourneAustralian Institute of SportSchool of Public Health, University of Sydney

Introduction: Anecdotally, Indigenous (I) Australian foot-all (AF) players are more likely to suffer from soft tissuenjuries compared with their non-Indigenous (non-I) team-

ates, and there is some evidence that being of Aboriginalescent is associated with an increased risk of hamstringnjury. The current study aimed to investigate if standard hipnd groin screening tests would reveal differences betweenndigenous and non-Indigenous players.

Methods: Two hundred and seventy elite junior Australianootball players at the Under 16 National Championshipsnd AFL Draft Camp were screened using a battery of mus-uloskeletal tests. The following hip and groin tests werendertaken: supine passive hip internal rotation at 90◦, supinective hip internal rotation and external rotation in neutral,rone passive hip internal rotation, adductor squeeze test at0◦ and 0◦ knee flexion (measuring pressure (mmHg) andain rating (1–10)).

Results: Thirty three players (12%) were Indigenousnd of these players, 58% (n = 19) played in the North-

rn Territory. Independent groups t-test, Mann–Whitney Und Person Chi-Square tests comparing means and rank-ngs of the Indigenous group to the non-Indigenous groupemonstrated significant differences between the two groups

rpta

cine in Sport 12 (2010) e1–e232

or right prone hip internal rotation (I X = 27.60 ± 9.16,on-I X = 33.39 ± 8.88, p = .00) and left prone hip inter-al rotation (I X = 25.83 ± 10.25, non-I X = 31.36 ± 8.75,= .00), pressure on squeeze test with knees at 90◦

I X = 165.71 ± 40.32, non-I X = 188.17 ± 62.32 p = .001)nd pressure on squeeze tests with knees at 0◦ (I= 172.57 ± 35.98, non-I X = 202.57 ± 49.14 p = .049), and

ain provocation during squeeze test with knees at 90◦ (I= 3.19 ± 2.26, non-I X = 1.03 ± 1.78). There were no sig-

ificant differences between groups for supine passive hipnternal rotation at 90◦, or supine active hip internal andxternal rotation in neutral.

Conclusion: The Indigenous players screened displayedignificantly less range of hip passive hip internal rotationith the hip in neutral, reduced adductor squeeze force

nd higher levels of groin pain with the squeeze test at0◦. The differences observed between Indigenous and non-ndigenous players may indicate that the Indigenous playersre at greater risk of hip and groin injuries in AF. Thisncreased risk may be a result of training, playing, environ-

ental or genetic differences between the groups. Based onhis preliminary evidence, young Indigenous players shoulde screened and managed for hip and groin injury. Furtheresearch is needed to confirm if Indigenous players are moret risk during senior football.

oi:10.1016/j.jsams.2009.10.093

3

n season shoulder instability episodes in professionalustralian Rules football

. Jarman 1,∗, G. Hoy 1,2

Australian Orthopaedic AssociationMelbourne Orthopaedic Group

Introduction: It has been well documented that the naturalistory of shoulder dislocation is to encounter further shoul-er instability, especially in the young male playing a contactport. Further, it has been documented that glenohumeralrthritis is a consequence of repeated shoulder dislocationn a third of more of cases. Australian Rules Football is theominant winter sport at a national level. It is also unique ineing a largely overhead, contact sport. We present an auditf in-season shoulder instability at AFL Level. We sought toetermine the true incidence of shoulder instability injuriesincluding non-dislocation instability episodes) at 15 of 16FL clubs during season 2007.Method: We contacted all participating team doctors

eekly to determine the cases of shoulder instability and dis-ocation episodes. We prospectively followed players who

eturned to elite level football following treatment, profilingerformance after return to play post therapy. We comparedheir pre injury performance indicators to their performancefter their return, and that of the following season.