Radiographic classification of the femoral intercondylar notch posterolateral rim.

Purpose: The purpose of this study was to determine whether posterolateral rim morphology can be delineated on plain radiographic images.

Methods: We obtained 20 femora from the Cleveland Museum of Natural History (10 each with distinct and indistinct posterolateral rims). Four blinded reviewers evaluated radiographic posterolateral rim morphology on lateral radiographs.