Hi Mimi,
I hope the stitch was just a random occurrence and that it heals fast for you. I was wondering how your psoas was doing. My surgery was Oct 16, 2018 and from the get-go out of surgery my hip flexors were very irritated. I stopped doing any lifting of the leg, whether with bent or flat leg, it was too painful. After my 3 month check-up I started trying to lift my knee to put on pants, socks, etc. It was better, not great, never pain free. I also had a palapble sensation over the hip area when walking, esp an incline. You could feel it and sometimes hear it as if a ligament/tendon was snapping. Even my friends and my PT (!) were like, Whoa, that's weird. Went back to OS and he said, "just ignore it, it will go away". Said it was soft tissue trying to resolve. He also said to stop PT. Not so easy to ignore when you feel like a chicken tendon ripping apart. During this time the hip flexor wasn't giving me much irritation (or I was more focused on the snapping sensation) but now almost 5 months out and my flexor pain has become very pronounced: the groin, down the front of the thigh. Like you I have hard time raising the leg to get in car and I always slowly pivot into position. If I do any longer distance walking it seems to get worse. Ugh. I've thought, well the pain is better than before the surgery but a friend of mine who is a doc said you didn't go through all the hassle not to be completely pain-free.