Something that Lance has suggested to speed up healing the knee is high rep tonic work. It has proven to work well in my experience as well. Doing 2-3 x 20-30 reps of leg curls without locking the knees out to keep constant tension. Doing it this way gets significant lactic acid buildup that aids in getting blood flow to promote healing. Try it out. Increase weight as you are capable and after a few sessions, along with not doing anything to aggravate the knee more should have you feeling better.
For a longer term solution, it would probably come down to something like getting more hip dominant possibly? If not, simply just doing some more hamstring work/ knee flexion work to protect your knees from all your 45+" quad dominant DLRVJ's and heavy squats
