Fig. 1

Preoperative and postoperative urethrography and surgical procedures of the two surgical methods. Bulbar corpus spongiosum non- transecting urethroplasty: A Preoperative urethrography: bulbar urethral stricture; B Dissociate and split the narrow urethra to expose the distal and distal normal urethra mucosa; C 3 − 0 absorbable suture of proximal urethral mucosa and indwelling catheter; D 3 − 0 suture the proximal end of absorbable line with the distal urethral mucosa; E Tighten and tie the distal and distal urethral mucosal sutures; F Postoperative urethrography: the lumen of the bulbar urethra was unobstructed without stenosis lingual mucosal bulbous urethroplasty: G Preoperative urethrography: bulbar urethral stricture; H Dissociate and split the narrow urethra to expose the distal and distal normal urethral mucosa; I The mucous membrane of the tongue was taken and trimmed; J Urethra was dissected and the lingual mucosa Inlay was used to reconstruct the dorsal urethra; K Urethra was dissected and the lingual mucosa Onlay was used to reconstruct the ventral urethra; L Postoperative urethrography: the lumen of the bulbar urethra was unobstructed without stenosis