Greetings, just posting this for anyone searching for some info on this type of injury. Even though it turned out to be a minor one, the more info out there for people, the better.
How it happened: I was pulling off a high heel hook, and when I grabbed the targeted hold, it wasn't as good as I thought, so it ended up putting a lot of pressure on the lateral side of my knee. That's when I heard a pretty loud pop, and felt it on the lateral side of the knee. I have no prior history of knee problems.
Immediately after symptoms: No immediate pain, no sharp pains, no burning sensation. No bruising. No swelling. I was able to stand up with no instability. I could walk around fine. Had a bit of pain that evening(3 out of 10).
The next day/weeks: Zero bruising. Very minor swelling. Sore at the top of the calf. Sore on the lateral side of knee (5/10). Hurt a bit when I palpated the area. Still able to walk, but had a very slight limp.
4 weeks: Still had some lateral pain when palpating the injured area. Still had pain in certain positions; example: 90/90 stretch. I was still able to climb(only took one week off), but avoided certain positions/moves. I ended up making a physio appointment to get it assessed, and to get some exercises to help heal faster.
Physio Diagnosis: LCL sprain. Minor. Most likely cause of the popping was ligament flicking over a protruding bone. Some of the persisting pain was tightness in the area, and scar tissue.
I've only been to two physio visits, and I already feel a lot better. He basically knows what muscles to target to loosen up the area of the injury, and has techniques to break up any scar tissue that might be present. He has given me a couple of basic exercises; like banded bridges but you also open up the legs while you hold the bridge position.
I basically wanted to write this because it was a scary sounding injury. I immediately thought I had destroyed my knee when I heard that pop. I'm hoping this description can help someone else out there. I want to add that it's well worth the money to visit a professional that can test your knee and give you a proper diagnosis. If you have bruising, and/or swelling, then you must get it checked.
All the best.