Most common cause of death after Total Hip Replacement is:

Thromboembolic disease (pulmonary embolism) is the most common cause of death within three months of total hip replacement. It is the most common serious complication after Total Hip Ahroplasty, accounts for greater than 50% of the postoperative moality after total Hip Ahroplasty. Ref: Campbell's Operative Ohopaedics, 8th Edition, Page 548; Pediatric Ohopaedic Secrets, 3rd Edition, Page 34; Total Hip Replacement Surgery: Principles and Techniques By S. K. S. Marya, R. K. Bawari, Page 132