The various steps in a urological orchiopexy are described in detail; alignment of an everted testis, funiculolysis, retroperitoneal dissection and medial displacement of the cord. The extent of surgical dissection needed and the final position of the testis have been registered in 150 orchiopexies. The results are related to the primary position of the testicle and the anatomy of the gonad. Of five abdominal testicles only one reached a low scrotal position and all steps in the mobilization procedure were used. The remaining four testicles had deformities considered to involve infertility. Of 18 canalicular testes 17 reached the bottom of the scrotum and medial displacement was used in 13 patients. Of 123 subcutaneous testicles 93% were mobilized satisfactorily and all four steps in the mobilization procedure were needed in 72%. In all the patients where a low scrotal position could not be achieved, there was a normal testicle in the other hemiscrotum.