Ultracet should not be taken for a long time, as it can cause addiction. This treatment is being suggested on bases of the information provided. However I would like to examine & investigate your  father in detail. -Control  Hypertension, Diabetes or  metabolic disorder, if there is any. --. Sleep on a hard bed with soft bedding. --. Keep a pillow under the knee. --. Avoid painful acts & activities. --. Fomentation with warm water. Let the part not be exposed to cold. -- .Do mild exercises for &the affected part.-back and lower limbs. --.visit my YouTube channel 'DrN C Gupta' and watch 'Me & My Yoga' and 'Yoga Simplified'. Kindly subscribe to the channel to get continuous guidence & notifications. It is free. --or else contact a physiotherapist. https://youtube.com/channel/UCPEQc6B1ywzwin048JSu6rw -Any way it may be tried, --. Ugesic (Piroxicam) 20mg 1 tab once a day x 5days --. Caldikind plus  (Mankind) 1 tab Once  a day x 10 days. -(You may need help of your local doctor to get these medicines.) 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. Dr N C Gupta MS (ortho.) DMC no.3624 Thanks.

Tab Paracetamol 1 gm may be thrice a day is an excellent option

Ultracet for 10 years….. Was he prescribed that medicine for this long???? It’s not an OTC drug…. It would always require a prescription for obtaining the medicine…. U r finding it difficult just coz pharmacy friends have started to follow the rules as the govt wants