Lately I've been squatting the most i ever have and below 90 degrees. It's not much, probably between 135-225. But afterwards, my left knee (usually my good knee) starts to become really sore when i bend it. It is usually at the top above the knee cap so it's definitely not the patellar tendon. So if i were to do a squat with no weights right now, it would kind of be sore right at about 90 degrees.
What seems to be the problem folks?