Brief Answer:
Could be due to Osteoarthritic changes .

Detailed Answer:
Hi.

They could be possibly due to Osteoarthritic changes in your knees (owing to your age and typical symptom of pain while folding and unfolding the legs).

X rays of the involved joints will show up the severity of the arthritic (wear & tear) changes in the joints.
general management guidelines for Osteoarthritis of knee joint are as follows -

* ACTIVITY MODIFICATION -It is important to maintain as much activity and joint motion as possible, but impact activities will aggravate arthritis. Running and jumping will often accelerate cartilage loss from the joint. The key is to focus on low impact activities, such as swimming or cycling.
* USING CANES: Assertive devices can make it easier to go about your day without stressing your painful joint. A cane may take weight off your knee or hip as you walk. Carry the cane in the hand opposite the leg that hurts.
* LOAD REDUCTION : Protecting the joint from excessive load may slow down the rate of cartilage loss. It is also effective in relieving pain. The heavier you are, the more stress you put on your joints. Weight reduction for obese patients, wearing shock-absorbing shoes, avoiding activities like climbing stairs and using a walking stick are worthwhile.
* ANALGESIC MEDICATION : Simple over the counter medications like acetaminophen is sufficient in most cases. If this fails to control pain, a non-steroidal anti-inflammatory drug may be better.
* PHYSICAL THERAPY : The mainstay of treatment in the early case is physical therapy, which should be directed at maintaining joint mobility and improving muscle strength.
Exercise can strengthen your muscles, which can help keep your joints more stable, and the stronger muscles help to absorb energy and protect the joint surface.
* OVER THE COUNTER PAIN CREAMS : Local massaging with creams and gels may provide temporary relief from osteoarthritis pain. Some creams numb the pain by creating a hot or cool sensation. Other creams contain medications, such as aspirin-like compounds, that are absorbed into your skin.
Pain creams work best on joints that are close to the surface of your skin, such as your knees.
* GLUCOSAMINE & CHONDROITIN SULFATE : Daily intake of Glucosamine & chondroitin supplements over a period of 3-4 months will help in reducing the arthritic pains and thereby decreases the necessity to take daily analgesic medications. And also vitamins C and D may help protect you against the progression of osteoarthritis.
* VISCOSUPPLEMENTATION: Hyaluronic acid injections given into the joint (especially large joints like knee joint) in prescribed dosages will give good short term pain relief in arthritic joints ranging from 1-2 years.

If all the above measures fail to provide significant pain relief, you may need a total knee replacement surgery depending upon your age.

I do hope that you have found something helpful and I will be glad to answer any further query.

Take care

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Brief Answer:
Avoid squatting for long duration.

Detailed Answer:
Hello XXXXXXX

Thanks for your query again.

Try to avoid sitting on floor in cross leg or squat position for long duration.Avoid stair riding too much. Include cycling and swimming in your exercise.
Do quadriceps strengthening exercises in morning and evening as up loaded on you tube. This will straighten your muscles around knee and pain will decrease.

Wishing you good health.

Warm regards...

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Brief Answer:
It is better to avoid it.

Detailed Answer:
Hello XXXXXXX

If the swimming increases the problem or hurt you, then it is better to avoid it.

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