Consistent moderate pain inner side of knee.while walking will "give out" with extreme stabbing pain in which I come very close to falling. No known injuries. Compared to other knee the knee cap looks to be double in size. Full extension even when sitting can Bring on the stabbing pain.
You're going to have to see an orthopedic surgeon and get some diagnostic pictures. Could be the meniscus. Could be a knee cap problem. Could be the patella tendon. Could be a cyst. But could bes don't help, you need to know so you can treat it.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.