Although replacement of the hip joint is a major operation, serious complications are infrequent. The most significant complications include infection, dislocation, blood clots in the legs and lungs and loosening of the components from the bone. The infection rate is approximately one-half of one percent. In spite of very extensive procedures to reduce it, infection has not been completely eliminated.
Infection is one of the most serious complications possible, as it usually requires further surgery.
After surgery, the artificial joint can move out of its proper position. Rhis is called dislocation. Your physician can move a dislocated hip back into place by applying gentle traction under sedation or a light anesthetic. Most people who dislocate soon after their procedure will not have a problem with chronic dislocation if they follow appropriate precautions. After six months to one year, dislocation occurs much less frequently, but people should still be careful not to place their hips in an unstable position, as late dislocations can still occur.