@runner101 - That's interesting that you saw that on television! I have heard and read the same as you wrote - that being a orthopedic surgeon of trauma is more physically demanding.
What I read was that these surgeons can be using physical force as they use mallets and sometimes bone saws on their patients.
Not a job for the faint at heart I would say! But just because someone is an orthopedic surgeon it does not mean they work with these types of traumas, there are quite a few other orthopedic surgeon specialties such as hand surgery.