Total hip and total knee replacement surgeries continue to have low mortality rate, a new study has found.

According to researchers at Haukeland University Hospital in Bergen, Norway, the risk of early postoperative mortality was estimated to be 0.1%.

The study included data on 81,856 patients with a total knee replacement and 106,254 patients with a total hip replacement from the Australian Orthopaedic Joint Replacement Registry.

The most important risk factors for increased early postoperative mortality were if the patients were male and more than 70 years old.

The study also included patients between 50 and 80 years of age with osteoarthritis from the Norwegian Arthroplasty Registry.