I am trying to understand the anatomy of my injury.

How it happened: I was cutting to the left in basketball. My right knee popped 3 times and I felt sharp pain. Immediately after the injury I couldn't extend my leg any more.

Extension: I can extend it to about 20-30 deg from straight. After that I get a sharp pain in anterior-medial below the patella (where the meniscus is).

Flexion: After the injury I could flex it almost all the way. Two days after it locks 45 degrees from fully bent. At that point I get a sharp pain in posterior-lateral region of the knee (in the knee crevice).

General: I can put moderete weight on my leg, but can't walk without crutches because I cannot straighten it.

History: I had the exact same injury (simptoms) 2 times in my life before. Each time, I would stay in bed 2-3 weeks and could limp. A month or two and I could walk/run. I also had an ACL surgery 8 months ago (after those two times).

Question: I can't understand why my knee locks. The general belief is that a part of meniscus is stuck underneath the knee and this is in line with my immediate locking. However, I feel like it doesn't explain why I am able to region the range of motion 2-3 weeks after the injury. Is there any other explanation?

  • 2
    These are very good questions that you should ask your doctor. On Health.SE, they are considered off-topic because we can't see you and we can't examine you. This does not mean that this effort is wasteful: Bring a printed version of your questions to the appointment, this way, you will not forget any important aspects you wanted to know about. Usually, doctors always like it when someone has a sound interest into their own health, and also an interest into the doctor's work. – Narusan Jul 8 '17 at 19:14
  • Excellently said, @Narusan. I would consider seeing an Orthopedic specialist if you're able to due to the complexities of locking issues. – DoctorWhom Jul 9 '17 at 4:01
  • Thanks for your suggestions, I will be seeing a specialist tomorrow. However, I am curious on how to pose a medical question so that it isn't considered offtopic? Should I rewrite it like it doesn't apply to me (e.g. in 3rd person)? Should I rewrite it so that it doesn't apply to anyone (e.g. in passive form)? – Mirko Jul 10 '17 at 3:26
  • @Mirko Not sure I should recommend it or not, but that's what I do. And I'll usually leave questions open that are worded that way. – L.B. Jul 11 '17 at 14:41

As I can't see you in person. This is by no means a Dx, please see a physician or physical therapist as soon as possible. They will be able to perform an evaluation to determine the extent of the injury

You cannot treat this yourself you MUST see a specialist.

This is only an idea of what may be going on, I cannot tell without an eval.

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