The pelvic digit "eleventh finger"

Abstract

Described as asymptomatic and an incidental finding on a plain x-ray film, the "pelvic digit" is a rare congenital anomaly. A 35-year-old man is of a rare symptomatic pelvic digit that warranted surgical excision. Its importance lies in its differentiation from acquired abnormalities due to trauma such as myositis ossificans and avulsion injuries of pelvis. If this entity is kept in mind, unnecessary investigations or interventions can be avoided.

Keywords: Eleventh finger; pelvic digit.

Figure 1

(a) Plain radiograph of the pelvis (anteroposterior view) depicting a finger-like bone projecting on the left iliac wing with pseudo-articulation with the ilium. (b) Lateral radiograph of the left hip showing a finger-like bone projecting (white arrow) on the left iliac wing.