Do i have to do surgery again?

Patient: Today i sliped and fell down. my knee bended all the way,but i was not supposed to do so. Since my doctor arranged my brace to bend till 30 degree only.i cracked my bone few weeks ago and already did surgery . but today i sliped and fell on the floor. There is no bruise. i cant lift up my leg. my knee is swollen.It hurts when i touch my knee really afraid. Do i have to do surgury again? pls reply asap.thankyou