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. 2012 Sep 5;47(2):93–97. doi: 10.1136/bjsports-2012-091471

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Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions

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Classification system of the maturation status of the ATT from stages 1 to 4. ATT, anterior tibial tuberosity; B, bursa; FP, fat pad; HC, hyaline cartilage; M, metaphysic; O, ossicle; P, physis; PT, patellar.