Hi i am Dr Ahmed Aly
thanks for using HealthcareMagic site ,
I had gone through your question and understand your concerns ..
In my opinion even when both parents have no seen genes they could have sons or daughters with brachydactyl , all genes consists of two parts sometimes parents have this kind of genes but do not show their properties this means that they have that gene in a weak form or medically called recessive genes which will only be seen in their offspring i think that is your case .
I do not want you to feel bad but that does not mean that your children will have that gene for sure , actually you could have perfectly normal offspring without any kind of
abnormality , it is just said that the percentage of having it is higher than that of your patients .
If you have that gene and your wife does not this means your children are less liable to have it unless your genes are strong enough to be shown or dominant .
I hope you have good , healthy children and do not worry you having type A2 brachydactyl does not mean that all of your offspring will have it .
Please click and consider a 5 star rating with some positive feedback if the information was helpful. Wish you good health,
Any further clarifications feel free to ask.