Hi Hope this message finds you in good health. I have gone through your complaints and understand your concern. I generally see many cases like this at my sports clinic.I give them a splint,rest,analgesics,anti-inflammatory tablets and ice pack till the swelling reduces to some extent. Then i get an xray done to find out the extent of swelling. in ur wifes case,i guess there should be a low grade infection persistent at the operative site that might have remained dormant. actually the pain should go completely after about 2-3 weeks post operatively. as the pain is still persistent i find that there should be some inflammation at the operative site that might be causing the pain. u should get an xray done to find out the cause. do get back to me after the reports are done. also get an blood profile done to rule out other causes. Nothing to worry about. I hope your question has been answered. If you have any follow-up queries,feel free to consult me anytime. Thanks,Take care,God bless.