pain behind knee when bending leg

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Dr. Payam Rafat answered:

Right knee pain only on left side no swelling cant keep bent 4 long painful when leg is straite it looks like my knee is shifted to left a lot?

Many possibilities

Knee_pain
The knee is an important weight bearing joint with a complex inner and outer structure. Your pain could be as a result of many different things. A thorough history and physical exam and possibly some laboratory and radiology exams are needed to determine the exact cause. Causes of pain may include: Trauma (fracture, tendon or ligamentous tear, arthritis), infection, and metabolic conditions.
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Dr. Allen P. Lu answered:

I have had knee pain only at night when I try to lay on my side and lay the inner part of my knee on the mattress. The only way I can sleep is turning on my opposite side and keeping the painful leg off the mattress.?

Hamstring tendinitis

Mcl
While there may be many causes of this pain, two very common sources is hamstring tendinitis that occurs from limping. The limping is often caused by weakness of the quad muscles, but can also be caused by knee problems such as arthritis. If you have had a fall recently, the cause can also be an MCL tear. To isolate the problem, a trip to your friendly neighborhood orthopedist may be helpful.
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Dr. Martin Morell answered:

Acute severe pain attacks when waking of pain behind right knee, bending leg is very painful. No injury.happens q few days. Lasts for 2-3 days.

Have

Broken_leg
physician evaluate for popliteal cyst, and other possibilities. Good luck!
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Dr. Anthony Filly answered:

I have a terrible pain in my knees. xray reports show everything normal. however changing my leg position after some time is very painful. ?

MRI

Leg
X-rays only show the bones. You may need an MRI to look at all the ligaments and meniaci
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Dr. James Burns answered:

Legs jump & are painful & burn at the front, shins, knees & thighs. My legs are very irritable.

Vascular

Peripheral_vascular_disease
Your symptoms could be related to restless limb syndrome, but at your age I would recommend you consult your doctor regarding peripheral vascular disease especially if you are or have been a smoker, are being treated for coronary artery disease or are diabetic.
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After doing squats for the 1st time, I have knots in my legs (5-6in Above knees)it is painful to touch and to stand/sit?

Foam roll

Tactile
normal response but either get a massage or start foam rolling - make sure you do some easy stretches
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Dr. Idan Sharon answered:

Both my legs go numb on the outer side of my knees an up my thighs. Sometimes it's fairly painful.M.S. in my family.Could that be what I have?

Numb legs

Extremity-joint-knee
it may not be m.s. as it is bilateral. an mri of the lumbar spine may show a disc problem. if you are concerned about m.s., an mri of the brain would rule that out. it sounds like an L3L4 disc problem, though testing would be a good idea, including an emg
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Dr. Scott Graham answered:

My knees make a creaking/popping sound when I extend my leg. It is sometimes painful to walk down stairs. I exercise and eat well. What can I do?

A few things

Knee_pain
You have Chondromalacia Patella. This is an early degenerative problem of the cartilage on the back of the patella and the stress with up and down activities causes grinding under the kneecap. The best treatment options are icing, hamstring and quad stretching, avoid stairs/lunges/squats and activity modification.
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HELP! Issue with legs and feet that has gotten worse. When standing, knees down get red/purple, tingly, itchy, painful. Now happens when sleeping. ?

Be seen

Leg
It could be a circulatory problem. See your physician for an exam and diagnosis.
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Both my legs go numb on the outer side of my knees an up my thighs.Sometimes it's fairly painful.I have M.S. in the family could that be what I have?

Doubtful

Knee_x-ray
This problem can only be solved by seeing your doctor and being evaluated face-to-face. After a thorough examination, your doctor should be able to tell you what's wrong and what to do about it.
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