In "Osteoarthrosis and Congenital Dysplasia of the Hip in Family Members of Children Who Have Congenital Dysplasia of the Hip", by Franklin T. Hoaglund and John H. Healey (72-A: 1510-1518, Dec. 1990), Figure 3-A on page 1512 was wrong. The correct figure appears here.
[See figure in the PDF file]