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Doctor insights on: Why My Knee Cracks And Is Swelling

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Left knee cracked when getting up from the floor. No swelling. X-rays clear. Still can't put normal weight on it, feels cold/wet. What could it be?

Left knee cracked when getting up from the floor. No swelling. X-rays clear. Still can't put normal weight on it, feels cold/wet. What could it be?

Knee cap: If X-rays were not reflective of a fracture . You have either strained the quad muscle , or bruised the under surface of the patella . Both can take 6-8 weeks to heal . Ice , NSAIDs may need brace and some physical therapy ...Read more

Dr. David Schleimer
1,498 doctors shared insights

Swelling (Definition)

Swelling is the enlargement of organs, skin, or other body parts. It is caused by a buildup of fluid in the tissues. The extra fluid can lead to a rapid increase in weight over a short period of time (days to weeks). Swelling can occur all over the body (generalized) or only in one part ...Read more


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2 weeks after ahtroscopy, knee cracks but no pain. Is it good or bad? Due to the healing?, is what im thinking.

2 weeks after ahtroscopy, knee cracks but no pain. Is it good or bad? Due to the healing?, is what im thinking.

Its OK: "cracking" and "popping" after knee arthroscopy is ok and fairly common.If the "cracking" becomes painful this is not 'ok" and you should see your surgeon.Best of luck! ...Read more

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When i fold my knee i can feel like a ball of water on the side. My knee cracks and hurts when i go to gym? Causes?

When i fold my knee i can feel like a ball of water on the side. My knee cracks and hurts when i go to gym? Causes?

Family practice : Fluid means there was ligament injury. Possibly inflamed from overuse. You may have had previous injury. Popping and cracking may mean meniscus injury. See an orthopedist. Possibly a MRI to confirm diagnosis. ...Read more

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My knee cracks everytime I bend down and as a dancer it hurts often but I have had it my whole life what is the cause ?

My knee cracks everytime I bend down and as a dancer it hurts often but I have had it my whole life what is the cause ?

Patella / kneecap: The most common reason for knee "cracking" is softening of the cartilage of the patella (kneecap). This condition is called "chondromalacia patellae". It occurs more often is women and is thought to be related to anatomical and muscular variations in some individuals. Oftentimes specific exercises or knee braces can improve the condition. Surgery is rarely indicated. ...Read more

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In dance I did a move & my knee popped out then into place,and months later when I was stretching.Now my knee cracks constantly. What could this be?

In dance I did a move & my knee popped out then into place,and months later when I was stretching.Now my knee cracks constantly. What could this be?

Patella malalignment: Sounds like you had knee cap (patella) dislocations. If the knee cap tracts slightly lateral to where it should, it will tend to cause a lot of noise and over time time wear down the cartilage (chondromalacia) as well as risk that it might pop out. Strengthening the inner thigh muscles (adductors) will help improve the patella alignment. Physical therapy is recommended. ...Read more

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When I straighten my right leg, my knee locks, and once I bend it my knee cracks, it's painful and also hurts when standing sometimes?

Knee cap tracking: It sounds like you are having problems with knee cap tracking or subluxating. It is common for young females to have loose knee caps that get slightly off tack and cause locking and popping. This could also be cartilage damage or meniscus tearing. You should be evaluated by a knee specialist and possibly get an MRI to make sure there isn't any cartilage damage or tearing. ...Read more

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Everytime I straighten my leg my knee cracks and pops.. No pain.. I hurt my knee when I was 12 jumping off my house. Never got it looked at.?

Should be OK: We used think that knuckle-cracking is bad and one may develop arthritis..There is no such evidence. As long as you are not having pain or instability in your knee, popping/crackling by itself is likely harmless..... ...Read more

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