Hi, I Had A Deep Laceration To My Index And

Hi, I had a deep laceration to my index and middle finger 4 months ago. They stitched me up at the ER, and I've had 14 PT sessions. I am starting to get feeling back, however both fingers are very stiff, and the index finger is bending in towards my Palm. It feels like the tendon is stuck to the bone. The doctor ordered 12 more physical therapy sessions. My question is am I just delaying the inevitable surgery. Is more therapy going to help.
Thanks