2 answers
Sharool’s Answer
The most obvious career starter would be a job with sports teams. ... Forbes magazine estimates that by 2020, the sports industry will grow into a $75.7 billion industry by, indicating that the sports management is a good career for those who have the skills and the drive to thrive in high-pressure sports management jobs.
Jared’s Answer, CareerVillage.org Team
Yes it is certainly a profitable career (although I might use the word lucrative of high paying rather than profitable). Generally, it's just as profitable as other board certified specialty doctor roles, IF YOU CAN GET IT. What I mean by that is that you have to first become a doctor (which is a set of challenges) and then you have to create or join a practice and specialize in orthopedics and sports medicine (this is all post medical school). It's certainly competitive, but that's a different question.
For what it's worth, there are a couple of related careers such as physical therapist specializing in sports medicine, certified athletic trainer. If you want to know more about those then ask a separate question.
Source: I just happen to be sitting next to my aunt right now who is a professional physical therapist who also has worked with athletes significantly.