The acetabular teardrop and its relevance to acetabular migration.

摘要: Five pelvises were photographed, roentgenographed, and sequentially sectioned or reamed to determine the location appearance of acetabular teardrop figure. The is located inferomedially in acetabulum, just superior obturator foramen. lateral lip exterior, medial interior wall. ilioischial line projects over acetabulum only fortuitously on straight anteroposterior (AP) roentgenogram. Because parallax, relationship between changes for views varying as little 10 degrees horizontal obliquity from true AP comprises a well-defined, constant portion wall whereas does not, authors recommend using rather than detection measurement migration.