Overuse injuries are the most frequently sustained injuries among professional ballet dancers. A study of professional dancers from leading dance companies who practiced disciplines such as classical, neo-classical, contemporary, and Spanish ballet found that a significant number of injuries were overuse disorders. These overuse injuries included patellofemoral pain syndrome of the knee, Achilles tendinopathy, patellar tendinopathy, adductor muscle injuries of the thigh, and facet joint issues in the lumbar spine. Overuse injuries were more frequent among female dancers and those in classical ballet.
Source: Orthopaedic Journal of Sports Medicine, 2015