Abstract
Introduction
The use of tourniquets and bipolar sealers are effective methods of hemostasis during total knee arthroplasty (TKA). However, their effect on perioperative patient outcomes is unknown. The purpose of this study is to compare the efficacy of tourniquet-less, tourniquet-less with use of a bipolar sealer, and tourniquet use on postoperative pain and surgical outcomes following TKA.
Methods
A retrospective study of prospectively collected data of 120 primary TKA cases was conducted at an urban academic hospital. Primary outcomes were visual analog scale (VAS) scores and opioid consumption (in morphine milligram equivalents). Demographics, length of stay (LOS), perioperative complications, and change in Knee Injury and Osteoarthritis Outcome Score (ΔKOOS) were also collected. Patients were divided into cohorts based on the use of tourniquet-less with bipolar sealer (TRLB) (n = 40), tourniquet (TR) (n = 40), or tourniquet-less (TRL) (n = 40).
Results
There were no differences in demographic data between each cohort. TRLB, TR and TRL had similar LOS (2.68 ± 1.63 vs 2.29 ± 1.27 vs 2.36 ± 1.42 days; p = 0.472) and VAS pain score on postoperative day 1 (4.68 vs 3.74 vs 3.63; p = 0.209). There were also no differences in opioid consumption at 2 weeks (p = 0.903), 1 month (p = 0.973), 3 months (p = 0.983), or 5 months (p = 0.983) post-operatively. TRLB and TR had comparable improvement in ΔKOOS from baseline to 12 weeks post-operatively (Δ16.58 ± 8.47 vs Δ23.92 ± 14.60; p = 0.254). Compared to the ΔKOOS of TRL (Δ5.19 ± 2.59), TRLB and TR had clinically and statistically greater ΔKOOS improvements (p = 0.009; p = 0.001). The TRL cohort also had a higher readmission rate than TRLB and TR (15% vs 0% vs 5%, p = 0.025).
Conclusion
Our findings demonstrate that both bipolar sealer and tourniquet use in TKA are associated with similar postoperative pain levels and LOS in comparison to tourniquet-less only TKA. However, bipolar sealer and tourniquet use may lead to better longer term improvement such as greater PRO score improvement and fewer readmissions.
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Data Availability
The data used in this study are from the authors’ institution and are available from the corresponding author, RS, upon reasonable request.
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Mr. SZ: writing original draft, writing review and editing. Mr. NM: writing—review and editing. Ms. CS: formal analysis and investigation. Dr. JS: conceptualization, writing—review and editing. Dr. RS: supervision, writing—review and editing.
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One of more authors is a paid consultant for Horizon Pharma, Intelijoint and Smith & Nephew; receives royalties from Smith & Nephew; own stock in Gauss surgical and Intelijoint; and received research support from Smith & Nephew.
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This study has obtained all required IRB and ethical approval at our institution.
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This study is a retrospective review in which patients were subject to their normal standard of care. No individual data are included within this study.
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Zak, S.G., Muthusamy, N., Sicat, C. et al. Bipolar Sealers and Tourniquet Use Have Similar Outcomes in Total Knee Arthroplasty. JOIO 56, 1745–1750 (2022). https://doi.org/10.1007/s43465-022-00670-z
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DOI: https://doi.org/10.1007/s43465-022-00670-z