There is a possibility of joint inflammatory disorder most probably Rheumatoid Arthritis..
ESR level of 110 is very high.. It might be because of inflammation only ..
Next Steps
You should get some other tests also like CBC,
CRP, RA factor, S.
uric acid so that the condition and type of the disease is confirmed and treatment can be started accordingly..
Health Tips
You can start with hot fomentation, analgesic tablets, local ointment for pain relief for now. ..