If the sperm quality is poor, IVF is the better option. With IVF with ICSI , poor sperm quality is easily overcome. The longer the 2 remaining stumps are on each side the better the chances for successful reversal and pregnancy. The shorter the stumps the lower are the chances for pregnancy. Unfortunately, it can not be known how much tube is remaining for certain without surgery.
Some women go through tubal reversal surgery with very short tubes.
This results in low chances for subsequent pregnancy. If the fimbriated end of the tube is damaged or has been removed, chances for success with reversal are low. If any of these factors are abnormal, expected pregnancy rates after tubal reversal would be significantly lower. Pelvic endometriosis or any scar tissue in the area of the tubes or ovaries would be expected to reduce the chances for success after tubal reversal surgery. However, IVF pregnancy rates are generally not affected by these conditions.