Neil, 14, is brought in by his parents, who are worried that his left elbow appears unusually angulated compared with the right.

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<p>Neil, 14, is brought in by his parents, who are worried that his left elbow appears unusually angulated compared with the right.</p><p>Neil denies any associated pain, weakness or functional deficit.</p><p>He is right-handed, and plays cricket and soccer recreationally with no difficulty.</p><p>He has a history of left elbow fracture after a fall from a skateboard when he was seven.</p><p>There is no other medical history of note and he is otherwise well.</p>

Dr Ash Chehata  is an orthopaedic surgeon specialising in upper limb surgery, based in Melbourne, Vic.