Kirner's Deformity:Juvenile Spontaneous Incurving of the Terminal Phalanx of the Fifth Finger

Abstract

Juvenile spontaneous incurving of the terminal phalanx of the fifth finger is extremely rare. The etiology is still uncertain; the combination of a primary epiphyseal disorder and tendon traction has been stressed. Peroperative biopsy has, apart from an epiphysiolysis, shown changes in accordance with osteochondritis dissecans.

Hands

“…Kirner's deformity is extremely rare and can be uni-or bilateral, the latter being more common in females than in males (Blank and Girdany 1965). The etiology is still uncertain; the combination of a primary epiphyseal disorder and tendon traction has been stressed (Rasmussen 1981;Dubrana et al 1995). When isolated, the anomaly is usually transmitted as an autosomal dominant trait with incomplete penetrance (David and Burwood 1972).…”