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| Frequently Asked Questions |
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Knee Noises (Cracking, Clicking)
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Q:
Every 10 minutes or so, I have to straighten both legs until the knee clicks. I've been doing this since the age of about 10. I am now 28. Recently the right knee aches and the clicking is getting louder and I am in some pain. Are these the symptoms of arthritis?
Answered by
Jack Farr M.D.
on November 12, 2001
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A:
Noise is just that: noise. It does not relate to a specific diagnosis and is often noted in normal knees. On the other hand, pathologic knees may have their own set of noises. Thus, do not rely on noise to make a diagnosis, but rather consult with a knee expert if you have discomfort, swelling or limitation in function or motion.
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Q:
I experience a distinct cracking and grating noise (Crepitus?) in my left knee. However, I do not experience any pain, swelling or discomfort. I believe that Patella misalignment may be the cause. Should I be doing some muscle stretching and strengthening exercises to correct the misalignment and thereby avoid future problems/pain? Or given there is currently no pain, can I leave well alone?
Answered by
Jack Farr M.D.
on November 12, 2001
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A:
Patellar malalignment has many subsets and each has a specific management. A knee expert can design a specific program for you and your knee. If the exam is normal, you may indeed be able to leave well enough alone.
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Q:
When I extend my left out it makes a crackling sound. What does this mean? I do have joints that pop all the time especially my knees when I bend them. Should this be a concern? I also want to work out with weights and do leg extension exercises, etc. What are your thoughts?
Answered by
Jack Farr M.D.
on November 12, 2001
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A:
Knee noise can be normal or abnormal. A knee expert can help you decide. In general when popping is noted during and exercise, that portion of the motion should be held until a knee expert can make specific recommendations. Leg extensions at times may overload the patellofemoral joint and should be held until your knee expert exam.
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Q:
For as long as I can remember my knees make a crack when I flex. I have for two years had both knees lock on occasions, mainly when squatting. Recently one knee locked and hasn't unlocked and remains painful. What could be the problem? Can crook knees be hereditary?
Answered by
Jack Farr M.D.
on November 12, 2001
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A:
Noises can be normal or abnormal, but locking is abnormal and should be evaluated immediately by your knee expert. Limb alignment may run in families much like other features, but each knee must be considered unique.
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If you need more information, you may submit a question to the doctor.
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Dr. Cynthia LaBella:
Preventing Knee Injuries in Young Athletes
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