hi sir/mam,as you had undergone
knee replacement 6yrs back,the following are the probable causative factors of your symptoms:
1)loosening or wearing of the implant.
2)patellofemoral(knee cap) problems.
3)implant alignment disturbances.
as the x-ray suggests,your hip joint may have
osteoarthritis.it usually presents as
1)hip pain
2)reduction in range of movements of hip
3)sometimes it can also cause
knee pain due to nerve impingement.
4)pain in the hip compels you to limp which strains your knee and calf muscles leading to pain.
thorough knee examination by an ortho specialist is required to rule out any knee implant related pathology which you had already completed.so,if you are not satisfied,you can go for a
second opinion.when all the above factors are ruled out,
fibromyalgia can be attributed to your symptoms.for temporary pain relief,analgesics like NSAIDs(
aceclofenac,ibuprofen etc).
acetaminophen are considered.hope my answer clarifies your doubt.any other queries,please do write to us.thank you.take care.bye.