Sheng-Hao Wang1, Chi-Hsiang Chung2, Yeu-Chin Chen3, Alexus M Cooper4, Wu-Chien Chien2, Ru-Yu Pan1. 1. Department of Orthopedics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C; Graduate Institute of Medical Science, National Defense Medical Center, Taipei, Taiwan, R.O.C; Hemophilia Care and Research Center, Tri-Service General Hospital, Taipei, Taiwan, R.O.C. 2. School of Public Health, National Defense Medical Center, Taipei, Taiwan, R.O.C. 3. Hemophilia Care and Research Center, Tri-Service General Hospital, Taipei, Taiwan, R.O.C; Division of Hematology/Oncology, Department of Internal Medicine, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan, R.O.C. 4. Department of Orthopedic Surgery, Rothman Orthopedic Institute at Thomas Jefferson University, Philadelphia, PA.
Abstract
BACKGROUND: End-stage hemophilic arthropathy is the result of recurrent joint hemarthrosis. Although total hip arthroplasty (THA) and total knee arthroplasty (TKA) can reduce severe joint pain and improve functional activity, controversy remains regarding outcomes after THA and TKA among patients with hemophilia. This study evaluated the risk of adverse outcomes of hemophilia patients who underwent THA and TKA. METHODS: This retrospective cohort study was conducted using data from the National Health Insurance Research Database. Patients who had hemophilia and underwent THA and TKA between 2000 and 2015 were identified. A total of 121 patients with hemophilia and 194,026 patients without hemophilia were included. Through propensity score matching, patients with hemophilia were matched at a 1:4 ratio to patients without hemophilia. Multivariable regression analysis was used to control for confounding variables and compare the risk of postoperative complications and mortality, differences in length of stay, and cost of care for the hospital. RESULTS: After propensity score matching and multivariate regression analysis, the adjusted hazard ratio of postoperative transfusion for hemophilia patients was 5.262 (95% confidence interval [CI] = 3.044-26.565, P < .001) in THA group and 6.279 (95% CI = 3.246-28.903, P < .001) in TKA group, when compared with the control group. Patients with hemophilia had longer length of hospital stay (THA group: 95% CI, 1.541-2.669, P < .001; TKA group: 95% CI, 1.568-2.786; P < .001) and higher total hospital charges (THA group: 95% CI, 3.518-8.293, P < .001; TKA group: 95% CI, 3.584-8.842; P < .001) compared to patients without hemophilia. Hemophiliacs had a higher yet nonsignificant 1-year infection rate (8.11% vs 3.38%, P = .206) in the THA group. There were no differences between the rates of 30-day and 90-day complications, 1-year infection, reoperation and mortality between the hemophilia and nonhemophilia groups. CONCLUSION: Hemophilia patients have higher rates of postoperative transfusion, hospital costs, and increased length of stay. There is an appreciable clinical difference in 1-year infection rates following THA but our analysis was limited by the small sample size. Other postoperative complications and mortality rates were comparable. Patients with hemophilia should be counseled that infection rate maybe as high as 8% following THA. Further investigation is needed to develop prophylactic and effective methods to decrease the rates of transfusions and associated adverse outcomes in hemophilia patients undergoing THA and TKA.
BACKGROUND: End-stage hemophilic arthropathy is the result of recurrent joint hemarthrosis. Although total hip arthroplasty (THA) and total knee arthroplasty (TKA) can reduce severe joint pain and improve functional activity, controversy remains regarding outcomes after THA and TKA among patients with hemophilia. This study evaluated the risk of adverse outcomes of hemophiliapatients who underwent THA and TKA. METHODS: This retrospective cohort study was conducted using data from the National Health Insurance Research Database. Patients who had hemophilia and underwent THA and TKA between 2000 and 2015 were identified. A total of 121 patients with hemophilia and 194,026 patients without hemophilia were included. Through propensity score matching, patients with hemophilia were matched at a 1:4 ratio to patients without hemophilia. Multivariable regression analysis was used to control for confounding variables and compare the risk of postoperative complications and mortality, differences in length of stay, and cost of care for the hospital. RESULTS: After propensity score matching and multivariate regression analysis, the adjusted hazard ratio of postoperative transfusion for hemophiliapatients was 5.262 (95% confidence interval [CI] = 3.044-26.565, P < .001) in THA group and 6.279 (95% CI = 3.246-28.903, P < .001) in TKA group, when compared with the control group. Patients with hemophilia had longer length of hospital stay (THA group: 95% CI, 1.541-2.669, P < .001; TKA group: 95% CI, 1.568-2.786; P < .001) and higher total hospital charges (THA group: 95% CI, 3.518-8.293, P < .001; TKA group: 95% CI, 3.584-8.842; P < .001) compared to patients without hemophilia. Hemophiliacs had a higher yet nonsignificant 1-year infection rate (8.11% vs 3.38%, P = .206) in the THA group. There were no differences between the rates of 30-day and 90-day complications, 1-year infection, reoperation and mortality between the hemophilia and nonhemophilia groups. CONCLUSION:Hemophiliapatients have higher rates of postoperative transfusion, hospital costs, and increased length of stay. There is an appreciable clinical difference in 1-year infection rates following THA but our analysis was limited by the small sample size. Other postoperative complications and mortality rates were comparable. Patients with hemophilia should be counseled that infection rate maybe as high as 8% following THA. Further investigation is needed to develop prophylactic and effective methods to decrease the rates of transfusions and associated adverse outcomes in hemophiliapatients undergoing THA and TKA.
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