In '85 medial and posterior malleolus fractures of left ankle lateral malleolus fracture of right ankle. They do not show in current xrays. How is that possible & would it acct 4 my ankle pain now?

Possibly. Sounds like u had bilateral ankle fx.'s @ age 21.Apparently no surgery? . 28 years later (if your fractures required no surgery) then it wouldn't be unusual to see " normal" appearing ankle bones since your fractures were minimally or non- displaced.See an orthopedic surgeon now for evaluation. Your pain now may be unrelated... Or u could be developing subtle arthritic changes best seen on mri.
Ankle pain. You have traumatic arthritis. Consult an orthopedist for help.
Because bone heals. And arthritic type pain can be felt......