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Mesa, AZ
A 44-year-old male asked:

i'm having pain in my right knee, when i straighten my leg it feels as my knee "locks up" and has a loud painful pop behind my kneecap.

2 doctor answers3 doctors weighed in
Dr. Jay Bayer
Dr. Jay Bayer answered
Family Medicine 51 years experience
Knee: As age continues there is problem of knee cap gliding smoothly along groove in tibia. Normal is smooth as glass gliding over ice. Time creates changes undersurface knee cap as well as muscular imbalance. Generally hamstrings tight which can also affect low back. Called patello-femoral syndrome. Some injures over years lead to this. A good physician or physical therapist can make definitive diag.
Dr. Audie Rolnick
Orthopedic Surgery 40 years experience
Something impinging: If it is new, it can be anything from a plica around kneecap to a meniscal tear, to an articular cartilage lesion.

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Last updated Oct 5, 2018

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