bell clapper deformity

bell clap·per de·for·mi·ty

a testis and epididymis free of the usual posterior attachment of the tunica vaginalis such that the tunic inserts high on the spermatic cord leaving the gonad more likely to undergo torsion. This deformity often results in a horizontal lie of the testis.

bell clapper deformity

A congenital lengthening of the tunica vaginalis or mesorchium, in which the testicles lies horizontally in the scrotum, predisposed to torsion and infarction; the testicle is likened to the clapper of a bell.
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References in periodicals archive ?
The most common etiology for intravaginal testicular torsion is the "bell clapper deformity." Normally, the tunica vaginalis attaches to the posterior surface of the testicle; however, some patients have an inappropriately high attachment of the tunica vaginalis, the bell clapper deformity, which allows the testicle to rotate freely on the spermatic cord within the tunica vaginalis (intravaginal testicular torsion).
The only known anatomic risk factor for intravaginal testicular torsion is the bell clapper deformity (Caesar & Kaplan, 1994; DaJusta et al., 2013).