Hi Sharon
I don't know how old your father is. My mother is 81 and was dx about 5 years ago and has been on Glivec for 2 years now.
She, too, suffers from pain in her hips / pelvis / tops of her thighs. Following advice from posters on here, I made a point of asking her consultant about this at the last clinic. I'd read that it wasn't a good idea to take paracetomol because of the implications for the liver.
Mum's consultant said her liver readings were fine and she should perhaps intersperse paracetomol with brufen. She also prescribed magnesium tablets for her to chew.
These don't seem to have helped, I'm sorry to say. Mum says she takes 'a long time to get going' but once she's up and moving about the pain decreases but doesn't entirely go away.
So no easy answer - sorry. However, the consultant did say that this was a side-effect she was becoming increasingly aware of. My mother goes to a Haematology clinic rather than a Leukaemia clinic so I guess maybe her consultant doesn't see that many CML cases.
Also, I suppose at 81, it would be surprising if my mother didn't have some sort of joint stiffness and pain. I do, at 61!!!!!
I hope your father feels better soon.