Congenital bilateral glenoid hypoplasia: a report of four cases

Congenital bilateral glenoid hypoplasia was regarded as a rare anomaly until recently (Laurent, 1958; Moser, 1958; Triquet et al, 1980; Resnick et al, 1982). Petterson (1981) found 20 cases in the literature and added nine of his own. Kozlowski et al (1985) reported this anomaly in eight patients, including six children. Since that time we have found four further cases and these are now described.