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J Knee Surg 2023; 36(14): 1462-1466
DOI: 10.1055/s-0042-1759790
Original Article

Clinical Outcomes after Computed Tomography-Based Total Knee Arthroplasty: A Minimum 3-Year Analyses

Robert C. Marchand
1   Department of Orthopaedic Surgery, Ortho Rhode Island, Wakefield, Rhode Island
2   South County Health, South Kingston, Rhode Island
,
Laura Scholl
3   Stryker Orthopaedics, Mahwah, New Jersey
,
Kelly B. Taylor
2   South County Health, South Kingston, Rhode Island
,
Daniel J. Erwin
2   South County Health, South Kingston, Rhode Island
,
Manoshi Bhowmik-Stoker
3   Stryker Orthopaedics, Mahwah, New Jersey
,
Zhongming Chen 
4   Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, LifeBridge Health, Baltimore, Maryland
,
Hytham S. Salem
4   Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, LifeBridge Health, Baltimore, Maryland
,
Michael A. Mont
4   Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Sinai Hospital of Baltimore, LifeBridge Health, Baltimore, Maryland
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Abstract

Computed tomography (CT) scan–based three-dimensional (3D) modeling operative technology has been shown to improve upon results of manual total knee arthroplasties (TKAs). Although there are many reports on superior precision of this CT-based technology, there has been continuing interest regarding extended clinical outcomes. The purpose of this study was to compare their clinical outcomes with manual TKAs at approximately 3-year follow-up. Specifically, we analyzed: (1) survivorship, (2) functional outcomes, (3) complications, and (4) radiographic outcomes (i.e., alignment, progressive radiolucencies). A total of 210 patients receiving CT-based TKAs performed by a single surgeon at a single center between July 1, 2016, and February 16, 2018, were compared with 210 manual TKAs completed by the same surgeon immediately preceding implementation of the CT-based technology. Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) surveys were collected at ∼3 years postoperatively. Subgroup analyses of pain and physical function scores were performed. Follow-up radiographs were evaluated for alignment, loosening, and/or progressive radiolucencies. There was 100% survivorship at final follow-up. The postoperative mean pain scores for the CT-based cohort and manual cohort were 1 ± 2 (range, 0–14) and 2 ± 3 (range, 0–17), respectively (p < 0.05). The postoperative mean physical function scores for the CT-based cohort and manual cohort were 3 ± 4 (range, 0–18) and 5 ± 5 (range, 0–19), respectively (p < 0.05). The postoperative mean total WOMAC scores for the CT-based cohort and manual cohort were 5 ± 4 (range, 0–32) and 7 ± 8 (range, 0–35), respectively (p < 0.05). There were low numbers of postoperative complications at final follow-up in either cohort. None exhibited progressive radiolucencies by final follow-up. The 3-year postoperative clinical outcomes support excellent survivorship and radiographic outcomes, low complication rates, as well as improved pain, physical function, and total WOMAC scores for CT-based TKAs. Therefore, patients who undergo CT-based 3D modeling TKAs should expect to have superior long-term clinical outcomes.

Keywords

clinical outcomes - robotic-assisted - total knee arthroplasty - technology - computed tomography scan–based three-dimensional modeling


Publication History

Received: 08 March 2022

Accepted: 15 September 2022

Article published online:
19 January 2023

© 2023. Thieme. All rights reserved.

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