If I were to paraphrase your search for a surgeon it sounds something like this: you are looking for a OS who understands the specific requirements for acetabular cup positioning after lumbar fusion to minimize the risk of dislocation. If the SuperCap consult doesn’t encourage you to move forward, you might consider this: reconnect with the surgeon who did your fusion. Perhaps he can recommend an OS who has worked successfully with his patients like you. Or perhaps he can give you a letter to show prospective OSs, that will precisely describe the unique concern you are bringing to the consultation.
Then, you can simply present yourself as a hip replacement patient (see xrays), with a history of prior lumbar fusion and specific concerns (see letter), and then let the surgeon tell you whether he meets your criteria for expertise, and whether he can accomplish the acetabular positioning required (see letter), and how he proposes to accomplish this.
I spent some formative time in my youth as a professional commission-only salesperson, where one of the first things you learn is to distinguish between buyers and shoppers. Some time ago, a person in a position of authority told you that you should not be a buyer until you turned 65, and you believed him. So, you’ve been a shopper since then, waiting for one of two things to happen: a surgeon to make you an offer that’s too good to refuse (either an expert or a procedure so sure-fire it removes the downside risks) or for your life with dysfunctional hips to become intolerable and force your hand.
Please understand, I wholeheartedly support shopping until you know you’ve found the best option. I also disagree with the “expert” who told you to wait until you were 65 - which is easy for me to do because I received the opposite medical advice. I don’t want to see your life become any more intolerable than it already is. The question here, I think, is whether you’re ready to stop shopping and start buying. You’ve said you hope to schedule this November...sounds like maybe you are. We’re rooting for you!