60 year old female known case of Rheumatoid Arthritis  had a history of left hip painfor which surface replacement was done in 2005 and totalhip replacement (THR) in 2013 (elsewhere). From last 1 year patient again has pain in left hip and is not able to bear weight on left leg. With these complains patient presented to us and on  clinical examination there was significant shortening of left leg and x-rays showed the acetabular cup migration into the pelvis (protrusio).Revision total hip replacement was done and special implants were used to augment the defect in acetabulum. Patient was walking with walker support on second post operative day, she is relieved of pain and has regained limb length.