Total knee arthroplasty outcomes in lupus: a study using the US National Inpatient Sample

Abstract Objective To assess whether patients with lupus have more complications and/or health care utilization than patients without lupus after primary total knee arthroplasty (TKA). Methods We used diagnostic codes to identify lupus (710.0) in patients who underwent primary TKA (procedure code, 81.54) in the US National Inpatient Sample from 1998–2014. We performed separate logistic regression analyses to assess whether lupus was associated with each in-hospital post-primary TKA complication (implant infection, implant revision, transfusion, mortality) or health care utilization for the index hospitalization. Results Our study cohort consisted of 8 127 282 primary TKAs with a mean age of 66.4 years, 63% were female, 68% White, 97% with OA, and the Deyo-Charlson comorbidity score was zero in 51%; 30 912 TKAs were performed in people with lupus. In multivariable-adjusted analyses, lupus was independently associated with a significantly higher risk of transfusion, but no significant difference in implant infection, implant revision or mortality, with respective odds ratios [ORs] (95% confidence interval [CI]) of 1.34 (1.25, 1.42), 1.38 (0.73, 2.60), 1.35 (0.83, 2.19) and 0.83 (0.34, 2.03). Lupus was independently associated with a significantly higher risk of total hospital charges above the median, the length of hospital stay >3 days (median) and discharge to an inpatient facility, respective ORs (95% CI) were 1.42 (1.22, 1.66), 1.09 (1.04, 1.15) and 1.34 (1.27, 1.41). Conclusion Our finding of higher transfusion rate and health care utilization in lupus compared with non-lupus patients undergoing primary TKA informs surgeons, patients and policy makers regarding TKA outcomes in lupus, and can also guide appropriate resource allocation.

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Higher comorbidity, poor functional status and higher health care utilization in veterans with prevalent total knee arthroplasty or total hip arthroplasty

Clinical Rheumatology ◽

10.1007/s10067-009-1201-4 ◽

2009 ◽

Vol 28 (9) ◽

pp. 1025-1033 ◽

Cited By ~ 23

Author(s):

Jasvinder A. Singh ◽

Jeffrey Sloan

Keyword(s):

Health Care ◽

Total Knee Arthroplasty ◽

Total Hip Arthroplasty ◽

Health Care Utilization ◽

Functional Status ◽

Knee Arthroplasty ◽

Hip Arthroplasty ◽

Care Utilization ◽

Total Knee ◽

Poor Functional Status

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Gender Disparities in Osteoarthritis-Related Health Care Utilization Before Total Knee Arthroplasty

The Journal of Arthroplasty ◽

10.1016/j.arth.2016.03.044 ◽

2016 ◽

Vol 31 (10) ◽

pp. 2115-2118.e1 ◽

Cited By ~ 16

Author(s):

Harpreet S. Bawa ◽

Jack W. Weick ◽

Douglas R. Dirschl

Keyword(s):

Health Care ◽

Total Knee Arthroplasty ◽

Health Care Utilization ◽

Knee Arthroplasty ◽

Gender Disparities ◽

Care Utilization ◽

Total Knee

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Health Care Utilization and Payer Cost Analysis of Robotic Arm Assisted Total Knee Arthroplasty at 30, 60, and 90 Days

The Journal of Knee Surgery ◽

10.1055/s-0039-1695741 ◽

2019 ◽

Cited By ~ 2

Author(s):

Michael A. Mont ◽

Christina Cool ◽

David Gregory ◽

Andrea Coppolecchia ◽

Nipun Sodhi ◽

...

Keyword(s):

Health Care ◽

Total Knee Arthroplasty ◽

Health Care Utilization ◽

Knee Arthroplasty ◽

Skilled Nursing Facility ◽

Robotic Arm ◽

Care Utilization ◽

Chi Square ◽

Total Knee ◽

Care Costs

AbstractThis study performed a health care utilization analysis between robotic arm assisted total knee arthroplasty (rTKA) and manual total knee arthroplasty (mTKA) techniques. Specifically, we compared (1) index costs and (2) discharge dispositions, as well as (3) 30-day (4) 60-day, and (5) 90-day (a) episode-of-care costs, (b) postoperative health care utilization, and (c) readmissions. The 100% Medicare Standard Analytical Files were used for rTKAs and mTKAs performed between January 1, 2016, and March 31, 2017. Based on strict inclusion–exclusion criteria and 1:5 propensity score matching, 519 rTKA and 2,595 mTKA patients were analyzed. Total episode payments, health care utilization, and readmissions, at 30-, 60-, and 90-day time points were compared using generalized linear model, binomial regression, log link, Mann–Whitney, and Pearson's chi-square tests. The rTKA versus mTKA cohort average total episode payment was US$17,768 versus US$19,899 (p < 0.0001) at 30 days, US$18,174 versus US$20,492 (p < 0.0001) at 60 days, and US$18,568 versus US$20,960 (p < 0.0001) at 90 days. At 30 days, 47% fewer rTKA patients utilized skilled nursing facility (SNF) services (13.5 vs. 25.4%; p < 0.0001) and had lower SNF costs at 30 days (US$6,416 vs. US$7,732; p = 0.0040), 60 days (US$6,678 vs. US$7,901, p = 0.0072), and 90 days (US$7,201 vs. US$7,947, p = 0.0230). rTKA patients also utilized fewer home health visits and costs at each time point (p < 0.05). Additionally, 31.3% fewer rTKA patients utilized emergency room services at 30 days postoperatively and had 90-day readmissions (5.20 vs. 7.75%; p = 0.0423). rTKA is associated with lower 30-, 60-, and 90-day postoperative costs and health care utilization. These results are of marked importance given the emphasis to contain and reduce health care costs and provide initial economic insights into rTKA with promising results.

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Tourniquet use in routine primary total knee arthroplasty is associated with a higher transfusion rate and longer postoperative length of stay: a real-world study

BMC Musculoskeletal Disorders ◽

10.1186/s12891-020-03623-5 ◽

2020 ◽

Vol 21 (1) ◽

Author(s):

Hong Xu ◽

Jingli Yang ◽

Jinwei Xie ◽

Zeyu Huang ◽

Qiang Huang ◽

...

Keyword(s):

Total Knee Arthroplasty ◽

Length Of Stay ◽

Knee Arthroplasty ◽

Enhanced Recovery ◽

Primary Total Knee Arthroplasty ◽

Transfusion Rate ◽

Partial Regression Coefficient ◽

Postoperative Length ◽

Total Knee ◽

The Impact

Abstract Background In an enhanced recovery after surgery program, a growing number of orthopedists are reconsidering the necessity of tourniquet use in total knee arthroplasty (TKA). However, the impact of tourniquet use on transfusion rate and postoperative length of stay (PLOS) in TKA remains controversial. Therefore, we carried out a study to investigate the effect of tourniquet application in routine primary TKA on transfusion rate and PLOS. Methods We analyzed data from 6325 patients who underwent primary unilateral TKA and divided them into two groups according to whether a tourniquet was applied during the procedure, and a tourniquet was used in 4902 and not used in 1423. The information for transfusion and PLOS was extracted from patients’ electronic health records, and the data were analyzed with logistic and linear regression analyses. Results Following TKA, the transfusion rate and PLOS were 14.52% and 7.72 ± 3.54 days, respectively, in the tourniquet group, and 6.47% and 6.44 ± 3.48 days, respectively, in the no-tourniquet group. After adjusting for the different related variables, tourniquet use was significantly correlated with a higher transfusion rate (risk ratio = 1.888, 95% confidence interval (CI) 1.449–2.461, P < 0.001) and a longer PLOS (partial regression coefficient (B) = 0.923, 95%CI 0.690–1.156, P < 0.001). Conclusions Our findings suggested that tourniquet use in routine primary TKA was related to a higher transfusion rate and a longer PLOS. The impact of tourniquet use on transfusion rate and PLOS should be taken into account in clinical practice.

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Bipolar Sealers Do not Improve Blood Loss or Functional Outcomes of Primary Total Knee Arthroplasty

The Journal of Knee Surgery ◽

10.1055/s-0038-1676516 ◽

2018 ◽

Vol 33 (01) ◽

pp. 062-066

Author(s):

Stefano Pasqualotto ◽

Guillaume Demey ◽

Aude Michelet ◽

Luca Nover ◽

Mo Saffarini ◽

...

Keyword(s):

Total Knee Arthroplasty ◽

Blood Loss ◽

Knee Arthroplasty ◽

Control Group ◽

Transfusion Rate ◽

Significant Difference ◽

Functional Scores ◽

Bipolar Sealer ◽

Total Knee ◽

Without Tourniquet

AbstractSeveral methods were introduced to limit perioperative blood loss in total knee arthroplasty (TKA). By transcollation of soft tissues below 100°C, bipolar sealers intend to reduce bleeding and tissue damage, compared with conventional electrocautery. Existing studies report contradictory findings about the performance of bipolar sealers. The purpose of this study was to evaluate the effect of a bipolar sealer on blood loss, transfusions, hospital length of stay (LOS), and functional scores in primary TKA. In this single-center prospective study, 101 patients, undergoing primary TKA in a fast-track setting without tourniquet use, were randomly assigned to either (1) the study group which was operated with a bipolar sealer or (2) the control group operated with conventional electrocautery. The study cohort comprised 49 men and 52 women, aged 71.1 ± 8.8 years. There was no significant difference between the bipolar sealer group and the control group in terms of blood loss at day 3 (1,240 ± 547.4 vs. 1,376 ± 584.4 mL; p = ns [not significant]), transfusion rate (10 vs. 4%; p = ns), surgery time (48.2 ± 10.8 vs. 46.6 ± 9.1 minute; p = ns) or LOS (4.1 ± 2.7 vs 4.3 ± 2.0 days; p = ns). At a mean follow-up of 63.3 ± 4.9 days, there was no significant difference between the bipolar sealer group and the control group in terms of net improvement of Knee Society Score (KSS) knee (26.0 ± 16.7 vs. 23.7 ± 12.3; p = ns) and KSS function (20.4 ± 19.3 vs. 20.8 ± 19.9; p = ns). Compared with the use of conventional electrocautery in primary TKA without tourniquet, we found no effect of bipolar sealer use on blood loss, transfusion rates, LOS, or functional recovery. This is a Level II, prospective cohort study.

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