Total hip arthroplasty not only improved quality of life but may slightly increase life expectancy in the 10 years after surgery is performed, according to a recently published study in Clinical Orthopaedics and Related Research.
“We are well aware that THA is reliably improving the quality of life for patients with symptomatic hip OA (adding life to years), but comparing the survival of our cohort of patients undergoing elective total hip replacement, we have been able to identify an increased chance of survival (adding years to life) up to 10 years after surgery compared to an age- and sex-matched population,” Peter Cnudde, MD, told Healio.com/Orthopedics.
Cnudde and colleagues used data from the Swedish Hip Arthroplasty Register to identify 131,808 patients who underwent THA. Investigators compared patient survival or relative survival with age- and sex-matched survival data for the entire Swedish population. A multivariable model and a Cox proportional hazards model in transformed time were used for the study.
Results showed slight improvements in the survival rate 10 years postoperatively for patients who underwent THA vs. the general population. After 1 year postoperatively, the survival rate was 1% better for patients who underwent THA than the expected rate. This increased to 3% after 5 years for the THA cohort. After 10 years, the difference was 2% and after 12 years, no difference was seen between patients who underwent THA and the general population.
After 1 year postoperatively, the survival rate was 1% better for patients who underwent THA than the expected rate
Investigators noted a similar survival rate for patients who underwent THA for sequelae of childhood hip disease, when a primary osteoarthritis was used as a reference. According to researchers, poor relative survival was seen in patients who underwent THA for osteonecrosis of the femoral head, inflammatory arthritis and secondary osteoarthritis. There was a negative correlation between relative survival and comorbidities and the Elixhauser comorbidity index. There was also a negative association between level of achieved education, marital status and survival. – by Monica Jaramillo
: The researchers report no relevant financial disclosures.