Acute | Sudden onset | An aerial acrobat loses hand grip while inverted on a trapeze and falls, hitting their head on an 8-inch crash mat, resulting in a concussion. A ground acrobat inverts their ankle when landing from a back tuck on the trampoline, resulting in a lateral ankle sprain.
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Repetitive | Sudden onset | A contortionist experiences sudden onset of low back pain related to end-range spinal extension when training. Radiographs show an L4/L5 pars interarticularis fracture with spondylolisthesis. A ground acrobat has been complaining of soreness in the Achilles tendon over the last few weeks. After a tumbling pass, the acrobat has sudden onset of sharp posterior ankle pain. Imaging reveals rupture of the Achilles tendon.
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Repetitive | Gradual onset | An aerial acrobat has been intensively rehearsing new choreography, including dynamic beats on a rope, over the last month. Over the last 2 weeks, she developed shoulder pain related to rotator cuff tendinopathy. A juggler experiences gradual onset of neck pain that progresses into numbness in his thumb after an increased workload related to more performances per week and is diagnosed with cervical radiculopathy.
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