Today's episode comes from a runner who was having some weird aches and pains when running.

One doctor suspected he might have a thing called a "tarsal coalition."

A tarsal coalition is an abnormal union or connection between two bones.

He was even told me might need surgery to remove the tarsal coalition.

He asked me whether or not an injection, like a stem cell injection, might actually help a tarsal coalition.

You have to think about the runner's goals, and we expect different injections will actually do to figure out which is best for you.

Today on the Doc on the Run podcast, we're talking about two opposite ways injections could help a tarsal coalition in a runner.