This treatment is being suggested on bases of the information provided. However I would like to examine & investigate your mother in detail. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any. -Any way it may be tried, --. Dolokind Plus (Mankind) [Aceclofenac100 mg +Paracetamol 350 mg] 1 tab. OD & SOS. X 5 days. --. Caldikind plus  (Mankind) 1 tab OD x 10 days. -(You may need help of your local doctor to get these medicines.) --. Fomentation with warm water. Let the part not be exposed to cold. --. Sleep on a hard bed with soft bedding. --. Keep no pillow under the head. --. Avoid painful acts & activities. -- .Do mild exercises for the affected part.- back and lower limbs. --.(Take help of physiotherapist or you can visit my YouTube channel Dr. N. C. Gupta and watch 'Me & My Yoga' and 'Yoga Simplified'. https://youtube.com/channel/UCPEQc6B1ywzwin048JSu6rw --Do not ignore, let it not become beginning of a major problem. --Do ask for a detailed treatment plan. Kindly make sure, there is no allergy to any of these medicines. --For emergency treatment visit nearest hospital. --Wish you a quick recovery & good health. --I hope, I have solved your problem to your satisfaction.  Dr N C Gupta MS (ortho)

Opposite side Paralysis puts lot of load on the normal side. She might have developed Meniscal tear. If the pain is significant or there is swelling or locking the consider doing MRI

I would like to know, whether they bear weight over the paralyzed limb. Treatment plan will change totally with proper history. So I suggest to consult me and discuss details.

Get an weight bearing x-ray of both knees done. She must be suffering from osteoarthritis. Take some anti-inflammatory Hot packs Knee cap Local voveron gel Avoid sitting cross legged.

Take paracetamol for pain for now Gentle massage with oil can be done Volini spray/ gel Knee cap if suited Get x rays if possible Consult if no relief

This can be due to multiple things. Need a few more details.

If there is not obvious history of trauma, any fractures or acute tears can be ruled out. More history regarding the pain are required to get to know the nature of the pain. Sometimes prolonged immobilisation lead to contractures and reduced mobility. Forcing a joint beyond the new range of motion can lead to pain. If the pain is not too severe and short lasting, there's nothing to worry about and it might resolve spontaneously with or without medication.

Give rest to knee. Tab Paracetamol BD