Items tagged “coccyx”

Anterior angulation of the coccyx may be a normal variant but poses a diagnostic challenge for those considering coccygeal trauma 1. Classification Six types of coccyx have been described 2,3: type I: the coccyx is curved slightly forward, with its apex pointing caudally (~70%) type II: the ...

Coccygeal glomus tumors are rare benign neoplasms with the same morphologic features, expressed by glomangiomas occurring at extra coccygeal sites as under the fingernails or toes. Terminology The term "glomus" was historically used to describe certain types of neuroendocrine tumors arising fr...

The glomus coccygeum or glomus body of the coccyx is a microanatomical structure formed by an arteriovenous anastomosis and represents likely a phylogenetic vestigial structure 1. Gross anatomy Glomus bodies are spheroidal or ovoid well-circumscribed vascular lesions. Their size is usually up ...

The coccygeal plexus is formed by the anterior rami of S4-S5 in combination with the coccygeal nerve and is described as supplying the skin of the post-anal region. Gross anatomy Origin The plexus consists of a minute network of nerve fibers contributed by the anterior rami of S4, S5 and the ...