At each session, select five exercises from the following!
squat, front
squat, hack
squat, split leg
squat, leg press, lunge, leg extension, leg curl, standing calf raise and seated calf raise. For each exercise, complete between three and four sets of 12 to 15 repetitions, resting for a maximum of 60 seconds between sets.
Google the exercises to see how to perform them.
Before doing anything get the OK from your doctor!!!