Sevaral reasons: 1-hardwear frailer . 2-bone lost blood supply.(avascular necrosis. 3-infection at the surgery site. 4-venous thrombosis.(dvt) those the main reasons.
Answered 12/9/2013
5.5k views
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question