 [ Symptoms ] does having one testicle cause having one sex of offspring my wife and i want to have a girl we have two boys i have one testicle and it is not undesended and has been searched for as a child and adult is it possible that one testes is related to one specific sex of child [ Disease ] the back nerve and muscle may have been unduely stretched and inflammed take rest use back belt if this isnt helping you need an mri of the back region