Hyperextended elbow

I was playing basketball more than a month ago when I hyperextended my elbow. I went in for xrays and they showed no fracture, just a sprain. so I rested for three weeks, iced, then heat treatment. after three weeks, I went in for a followup and they took xrays and the doc said they just noticed that at the time of the injury, I also dislocated the elbow. so he told me the time til rehab might be 7 weeks, meaning I had 4 weeks left to go. still, today, I have a constant pain when trying to fully flex the elbow. I have regained about 90% of my ROM. my question is simply, is it possible to regain all my ROM and will I be able to do what I used to be able to do. thanks.dc