Total hip replacement involves replacing damaged bone and cartilage in the hip joint with prosthetic components. The procedure involves removing the femoral head and reaming the acetabulum to fit a metal shell. A femoral stem is inserted into the reamed femoral canal and a replacement femoral head is attached. The completed hip replacement provides a new weight-bearing surface for the joint. Post-operative care includes antibiotics, anticoagulants, pain medications, and exercises to restore mobility and prevent complications like blood clots.