1. From this study, it may be stated that the pelvifemoral angle is between 50 and 52 degrees in normal adults and children.
2. In the preambulatory infant, the angle is about 58 degrees.
3. Height, weight, age, and sex make no material difference.
4. The normal left hip has the same angle as the normal right hip.
5. The error caused by discrepancies in locating the involved landmarks does not exceed 5 degrees.