Olympic gold medalist Keely Hodgkinson has an unusual hamstring structure, revealed by an MRI scan. The scan showed she has two tendons instead of one, a condition she is still learning to manage.

Hodgkinson's split hamstring allowed her to continue running despite a tear, but it also makes her more prone to breakdowns. She has had to adjust her training to avoid high-risk activities. Read more racing coverage.

Despite setbacks, Hodgkinson remains optimistic about her performance, finishing second in the world at the Ultimate Championship. She will conclude her season at the Athlos event in London. Related: Hunter Bell to Compete in Mile at Athlos London.

This original Runner World brief is based on reporting from BBC Sport Athletics. Visit the source for its complete reporting, context and any later corrections.