Only one is a doctor
An orthopaedic surgeon is a doctor, has completed 5 years of residency training, after medical school.
Some orthopaedic surgeons complete fellowships in specific areas of orthopaedics which may take a year or more to complete. That's at least 9 years of training after undergrad, most of which is focused on musculoskeletal care. We right the orders for treatment and the therapist
do the treatment.