You're gonna get through this. I had this injury/ surgery on my right leg in June. Tore both quad tendons the day after I got my cast off in August. Got em both repaired with pig tendons allografted in. Got my casts off in September. Been doing pt mwf for six weeks and exercises at home the other 4 days. have been able to ride the recumbent bike and do parallel squats with a kettle bell for the last week. Balance, stability, range and strength are all coming back. Size is not so much tho! It looks like senior citizen legs got swapped with mine. Today my surgeon told me I can stop wearing the braces and I rode my motorcycle for a couple hours. Be sure and get a Physical therapist who treats athletes. Mine told me a full recovery is only a few months away. When I was in the middle of this like you are, I got kinda depressed. not sure about how the recovery was gonna go, sitting around all day couped up and not a damn thing on tv. Brighter days are ahead of you. You are going to recover well because you know how to train and know what it is to be strong and in shape, my pt told me the biggest problem with most people is they are lazy, don't do their exercises and that's why they don't get results. In a couple months you will be posting about the badass progress you've made.