Hypothesis That Urethral Bulb (Corpus Spongiosum) Plays an Active Role in Male Urinary Continence

Figure 13

Sling in retroluminal position in double-folded fashion (fat dotted line). (s) = symphysis and (df) = Denonvilliers’ fascia. Tightening of the sling leads to a rotational cranial movement with double folding, supporting the dorsal distal aspect of the sphincteric urethra. This support is indirect as spongiosum tissue is interpositioned between sling and urethral lumen. Spongiosum outline indicated with small dotted line.