Why Do I Have Severe Back and Leg Pain for 2 Months?

As for your mother's complaints of painful joints, which are aggravated by activity and relieved by rest, they can be interpreted as potential signs of arthritis. Arthritis is a disease that is characterized by swelling and pain in the joints. Therefore, you need to consult a rheumatologist for further treatment. A rheumatologist is a doctor who specializes in the treatment of arthritis and other joint problems. They can assist in determining the origin of the discomfort and enable the correct therapy to be administered that will aid in the alleviation of the signs.

R22.43 means you have swelling, mass, or lump in your lower limbs on both sides which may cause your legs to feel heavy or achy. This could be because of prolonged sitting or standing, immobility, and after a minor injury. 

Maybe there is an infection in your foot. When your skin is pierced, bacteria may enter and cause swelling. The symptoms you are having such as feeling sick to your stomach (nausea), throwing up, being unable to have a bowel movement (constipation), headache, and having a high temperature could be due to the infection moving around. Quick treatment with antibiotics and other drugs from a doctor is needed so that you can get well soon. 

The movements which cause dislocation after hip replacement are:

a. Bending and leaning forward 
b. Sitting on low chairs, low bed, low toilets.
c. Crossing the knees
d. Lifting knee higher than your hip.