We went onto hypothesise that greater the defect, less the descent. Embryologically, besides other factors, descent of the testes is influenced by testicular factors as well. We have never seen, in 42 years in the field, any one with bilateral abdominal testes having fertility established with orchidopexy. We value your opinion. http://www.chcmj.ac.in/journal/pdf/vol3_no4/The_undescended.pdf