At 7 months post op my biggest issue is weakness. I don't really have much pain anymore but every once in a while I'll get a twinge in the graft area where I had my injury. However, getting strength back is a SLOW process. Even though I work out 4-5 times a week, it is still painstakingly slow and I have seen incremental progress over the last month.
A note on the VMO: The Vastus Medialis Oblique (VMO) muscle is the part of the quad on the lower inner leg right above the knee. This little muscle provides stability for the knee and can cause knee pain if it is weak. A weak VMO will cause the knee cap to track incorrectly and cause pain. Strengthening the VMO is critical after knee surgery because it is the muscle to atrophy the most and the hardest to build back up. Mine is weak! To build up the VMO, you need to focus on exercises that strengthen the quad. Physical therapists and surgeons have different opinions on if you can actually target the VMO with specific exercises or you need to work on just strengthening the entire quad. The ability to "spot train" is controversial but you can't go wrong if you do exercises to target the entire quad such as squats, lunges, step downs and step ups. So that's what I've been focusing on the past couple of weeks.
Here's a video of me doing some of these quad strengthening exercises:
Stairs: Stairs are slowly getting easier. I can go down stairs now without having to hold the handrail but I still do just because I feel more stable. Going up stairs I still have to hold on the hand rail pretty tight.
Cracking and Popping: I've noticed this has gotten better over the last month and my knee doesn't do this as much anymore. I guess the scar tissue is breaking up.
Overall: I think the most important thing that I learned this month is that regaining strength is a slow process. It just doesn't happen quickly no matter what I do. It took 2 months of doing lunges in parallel bars to get to the point where I could do them without holding onto anything like in the video. The definition in my VMO when compared with my non-operated leg is significantly different. I think this is why I have such trouble with stairs. This muscle is important when doing the step up motion. When I look at where I was 3 months ago, I have gained significant strength back so remembering this is how I stay positive.