Total Hip Replacement: Lily’s Groundbreaking CHOP Story sewardsk3 Fri, 07/10/2026 - 14:03 CHOP orthopedist Dr. DeFrancesco would complete Lily’s hip replacement procedure, preserving her ability to walk. Lily’s case was uncommon, even to the seasoned experts in the Orthopedic Center at Children’s Hospital of Philadelphia (CHOP).