back in december i strained my groin and tore my left hip flexor, and what i did was: narrow stance box squats, pull throughs and/or belt squats, step ups, and yoga. all the lifting was kept light and in a 12-15 rep range. i still lost a good bit from my squat and deadlift, but actualy got my legs an inche bigger in the 6 weeks i was lifting light. but if you're already a narrow stance squater (i squat very wide) then leg press, goodmornings, and stiff leg deadlifts would be good to do. also, look into yoga, that helped me a lot with recovering.