Maturation arrest.... Helpful hints/ suggestions...

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My husband and I have been suffering with infertility for over a year now recently we heard he had low sperm which then turned out to be no sperm in his 2nd seaman analysis. He had a biopsy done however only one side was done we were told if it wasn't in one it wasn't in the other... We believed the doctor and now we are 2nd guessing him. We got the results and he said he had maturation arrest now we are hearing he did the biopsy wrong because he didn't do a wedge biopsy he did a punch biopsy... Anybody else gone through this??? We have an appt with my fertility doctor but would just like to try and ease my mind. We just want to make sure that if we choose a different route to have a baby that we have tried every other way to have our own biological child first... Anyone have any helpful answers/ suggestions??