Hello
Please share your details like your height and weight too.have u gained weight recently..pain in knee is one problem and pain n tingling in leg is associated with your back problem .
For detail assessment of the ailment do visit a orthopaedic surgeon or a physiotherapist.
Next Steps
as a preliminary treatment start lying prone ,hot pack over back plus application of volini gel.
Health Tips
avoid forward bending and weight lifting
keep a check on your weight.