How do you approach it - very simply by telling him that your b/f / husband / partner had tied your wrists and as a consequence of this you have lost the feelings in some fingers. Believe it or not, doctors have real lives, and whilst yours may well not be a Dom he will be fully aware that many people enjoy simple bondage. He is going to be much more interested in what has happened to your fingers than what happened in your bedroom. Please don't be tempted to make up some alternative explanation, the one thing I have heard doctors laugh about is the 'plausible' explanations for sexual adventures which have gone wrong.

On the subject of being how you play in the immediate future, I would not risk being tied in anyway until your current problem has been investigated - but that may just be me being overly cautious. Instead, why not go for verbal bondage - believe me it can be incredibly powerful. He puts you into the position of his choice and tells you not to move out of it - regardless of what he does to you. (Unless you start feeling numb, in which case normal safety considerations take priority.)

As everyone said in the other thread you started, please do seek medical advice and sooner rather than later.

cariad