Lauren Post caught her foot in the hem of her costume and tore a knee ligament onstage. Michele Wiles was being lifter high over her partner’s head when he lost balanced and they crashed – onstage. Natalia Makarova famously has a piece of scenery crash onto her mid-performance. And there’s that dreaded pop! of the Achilles tendon rupturing. Sarah Kaufman tells tales of bodily disaster and recovery.