When the hemipelvis anteriorly rotates, how does the acetabulum move and what does that imply about leg length?

• A. Acetabulum moves inferiorly and anteriorly; left leg appears longer
• B. Acetabulum moves inferiorly and posteriorly; no leg length change
• C. Acetabulum moves superiorly and posteriorly; a non-patho Left AIC should therefore have the appearance of a shorter left leg
• D. Acetabulum moves superiorly and anteriorly; left leg appears shorter

Answer: (C)