Paraspinal abscess complicated by endocarditis following a facet joint injection.

Infectious complications secondary to lumbar facet injections are exceedingly rare, follow an indolent course, and local sequelae include abscess spread or infections of the central nervous system. We present the case of the development of a facet abscess and infective endocarditis, which developed shortly after a lumbar facet injection. With the increase in interventional pain procedures, physicians must be aware of potential infectious complications.