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According to recently published results, the “true cumulative incidence” of hip dislocation, including revisions and closed reductions, after primary total hip arthroplasty is 3.5%, a 50% increase compared with register-coded dislocations.
A group of researchers from Denmark used the Danish Hip Arthroplasty Register to identify 31,105 primary THAs from 2010 to 2014 with at least 2 years of follow-up. Additionally, they identified dislocations and matched diagnoses with procedure codes using the Danish National Patient Register and performed multiple logistic regression analysis to analyze risk factors.
Dec 30, 2020
TUESDAY, Dec. 29, 2020 (HealthDay News) The “true” cumulative incidence of dislocation after primary total hip arthroplasty (THA) may be as high as 3.5 percent, according to a Danish study published online Dec. 18 in the
Journal of Bone & Joint Surgery.
Lars L. Hermansen, M.D., Ph.D., from Odense University Hospital in Esbjerg, Denmark, and colleagues used the Danish Hip Arthroplasty Register to identify 31,105 primary THAs indicated for primary osteoarthritis performed from 2010 to 2014 with two years of follow-up data to assess the cumulative incidence of hip dislocation (revisions and closed reductions) after primary THA.
The researchers found there were 1,861 dislocations in 1,079 THAs, corresponding to a two-year cumulative incidence of 3.5 percent. Compared with the correctly coded dislocations captured by administrative register data only, this number represents a 50 percent increase. Three-fourths of initial dislocations occurred within the first three
In the first two years following total hip arthroplasty (THA), the true rate of hip dislocation is 3.5 percent, according to the report by Lars L. Hermansen, MD, of Hospital of South West Jutland, Esbjerg, Denmark, and colleagues. Since our results are based on a large cohort over a five-year inclusion period and include all hospital contacts in Denmark within the first two years after THA, we believe to have found the true occurrence of dislocation within this patient group and time frame, the researchers write. Comprehensive approach needed to capture true risks of dislocation after THA
Hip dislocation is a common and devastating complication following THA and is one of the leading reasons for revision. Previous studies have reported widely varying rates of dislocation following THA, reflecting differences in study methods and patient populations. Some dislocations may be treated without a surgical procedure or hospital admission; other patients may undergo revision at a