What deformity predisposes to testicular torsion?

• A. Bell clapper deformity
• B. Hydrocele
• C. Undescended testicle
• D. Varicocele

Answer: (A)

Bell clapper deformity is the anatomic variant that pre disposes a testis to twist. In this situation the tunica vaginalis surrounds the entire testis and epididymis and attaches high on the spermatic cord, so the testis sits horizontally and lacks normal posterior fixation. That freedom lets the testis swing and rotate within the tunica vaginalis, making torsion possible. Hydrocele is simply fluid around the testicle and doesn’t create a twisting mechanism. Varicocele involves dilated veins and isn’t about abnormal fixation. An undescended testicle carries its own risks, but the classic predisposition to twisting is the Bell clapper deformity.