Latarjet bone graft.
https://www.shoulderandkneesurgery....atarjet-procedure-shoulder-instability-perth/
Basically one side of the "dish" of my joint has broken away and dissolved, and needs replacing. Relatively common operation I hear. Here is a good comparison of my good and bad sides.
View attachment 456943
Looks like a real improvement over the old style Bankart procedure. Good luck with it!