 [ Symptoms ] at the age of 40 is it common to fall apart  the chief medical officer in the army told me i had been born with a condition in which my sarcral joint was made of cartlage instead of bone i herniated l3l4 for months i have had knee pain and dismissed it as possible arthritis however recently i started having neck pain that radiates down over the left shoulder preventing me from full neck motion after about a week the pain subsided and now i am having knee pain again on the interior side of the right leg [ Disease ] i am sorry to hear you are experiencing this i hope you feel better soon unfortunately it is impossible to say what is going on without a physical exam and possibly other tests such as an x ray or mri you do not say what your age is but it is important to remember men can get osteoporosis just like women among many possible causes for your pain is a stress fracture of the pelvis due to osteoporosis of course many other conditions could be contributing to the pain you are experiencing your best bet is to get an examination by a medical professional you can start with your primary care provider he or she will guide you toward appropriate treatment if necessary best wishes to you