is common in in the metatarsal-phalangeal joint at the base of the big toe,
There are so many causes for gout like diet (consumption of alcohol, fructose-sweetened drinks, meat, and seafood), medications of other diseases, renal under excretion of uric acid and genetics.
Assessment of uric acid helps to diagnose and assess the improvement after treatment.
Sometime Synovial fluid
analysis may be needed to arrive at a diagnosis.
The treatment you are taking is OK. Allopurinol
or probenecid provide long-term prevention.
Your past surgery need not have direct connection with this problem.