我上次髋关节痛看得是physical therapist

re
and they may refer u to physical therapy if needed.

谢谢大家的回复。好像美国没有专门的骨科呀。

 well, depends on your insurance.
for some plans,you have to see a primary care physician for a referral.
for some, you can call and schedule an appointment with ortho for an unexpected knee pain but make sure you do have a story to tell the doc once you are there.