Summary: Same-day arthroscopy within 2 years of UKA did not lead to infections following non-robotic medial or lateral UKA, demonstrating that knee arthroscopy can be performed safely and effectively in patients undergoing UKA to address any concomitant pathologies in the non-arthritic, adjacent compartment.

Introduction

Several studies have shown that knee arthroscopy prior to arthroplasty increases the risk of postoperative infection. Recent literature suggests waiting a minimum of 3-9 months after knee arthroscopy before undergoing knee arthroplasty (OR: 1.20; CI: 1.01-1.42; p = 0.035). The majority of data in the recent literature is comprised of national insurance databases or joint registries. These registries lack the specific data to determine the true incidence rates, which impedes accurate analysis of infections and revision risks. The purpose of this study was to determine if the rate of infection or implant failure was among patients who underwent knee arthroscopy prior to unilateral knee arthroplasty (UKA).

Methods

A consecutive series of two-hundred twenty-two knees that underwent a fixed-bearing medial or lateral UKA by a single surgeon without robotic assistance between 1999-2021 were included in the study. Patients were included in the preoperative arthroscopy group if they underwent an arthroscopy within 2 years prior to UKA, and the same-day arthroscopy group if they had an arthroscopy on the same day as the UKA was implanted. Patients underwent knee arthroscopy immediately prior to UKA to evaluate the opposite compartment for research purposes. Treatments included partial meniscectomy, and rarely a mild chondroplasty. All patients had postoperative follow-up visits at a minimum of 1 year following arthroscopy. Superficial infection was defined per the CDC criteria, and deep infections were defined as those that required surgical intervention.

Results

One-hundred sixty-one medial and sixty-one lateral UKAs were included. Twenty-four knees were in the preoperative arthroscopy group (18 medial, 6 lateral, age 64.0 ± 11.2 years, BMI=23.1 ± 3.7). Mean time from arthroscopy to UKA was 186 ± 163.9 days (range 28 to 651 days). One-hundred ninety-one knees were in the same-day arthroscopy group (136 medial, 55 lateral UKAs, age 65.7 ± 11.0 years, BMI 27.7±4.6). Seven knees were included in the no arthroscopy group (7 medial UKAs, 0 lateral UKAs, age 65.3 ± 9.5, BMI 30.9 ± 3.0). There were no significant differences in demographics between groups (p>0.05). No deep infections or periprosthetic joint infections (PJI) were seen in any of the groups. There were two superficial infections in the same-day arthroscopy group, both resolved after 14 and 22 days. No superficial infections were seen in the other two groups. There were no significant differences in infection rate between groups (p = 0.861).

Conclusion

Knee arthroscopy at the time of UKA was not associated with risk of superficial or deep infections of the knee after medial or lateral UKA. Knee arthroscopy immediately prior to knee arthroplasty is safe and effective to allow for thorough inspection of the joint.

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Association Of Ischemia Time And Serum Lactate Levels With Postoperative Pain In Primary Total Knee Arthroplasty At The Orthopedics And Traumatology Service At The Unidad Médica De Alta Especialidad No. 1 Bajío. ePoster Presentation Juan Antonio García Ramírez, MD, MEXICO
Success of Debridement, Antibiotics, and Implant Retention vs Revision In Early And Late Prosthetic Joint Infections Following Primary TKA: A Prospective, Multicenter Study of 251 Cases ePoster Presentation Mark Zhu, MBChB, NEW ZEALAND Richard Rahardja, MBChB, BMedSc(Hons), NEW ZEALAND Laurens Manning, MBChB, AUSTRALIA Sarah Metcalf, MBChB, NEW ZEALAND Simon W. Young, MD, FRACS, NEW ZEALAND
No Difference In Sports Participation And Patient-Reported Functional Outcomes Between Total Knee Arthroplasty And Unicompartmental Knee Arthroplasty At Minimum 2-Year Follow-Up In A Matched Control Study ePoster Presentation Amit Meena, MBBS, MS, DNB, INDIA Elisabeth Abermann, MD, AUSTRIA Christian Hoser, MD, AUSTRIA Luca Farinelli, MD, ITALY Caroline Hepperger, PhD, AUSTRIA Akshya Raj, MBBS,MS, INDIA Mohit Kumar Patralekh, MBBS, MS(Orthopaedics), DNB(Orthopaedics), MNAMS, INDIA Christian Fink, MD, Prof., AUSTRIA
Detection Loosening of Total Knee Arthroplasty Implant from Plain Radiograph Using Machine Learning Algorithm ePoster Presentation Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF Dongho Kwak, MD, KOREA, REPUBLIC OF Sungcheol Yang, MD, KOREA, REPUBLIC OF Hyukjin Jang, MD, KOREA, REPUBLIC OF Ryu Kyoung Cho, MD, KOREA, REPUBLIC OF Yong In, MD, PhD, KOREA, REPUBLIC OF
The Functional Outcome of Zimmer Biomet’s Nexgen Total Knee Arthroplasty as Compared with Healthy Older Adults ePoster Presentation Gwenllian F. Tawy, PhD, MRes, BSc(Hons), UNITED KINGDOM Michael J. McNicholas, BSc, MD, FRCS Tr & Orth, UNITED KINGDOM Leela C. Biant, MS, MFSTEd, FRCSEd(Tr&Orth), UNITED KINGDOM
Anatomical distribution of radiological OA Influences the Outcome of TKA ePoster Presentation Johanna Elliott, MB, BS, B.Med Sci, Master Science, GERMANY
Effect of Direct Adductor Canal Block Performed by a Surgeon in a Patient Who Underwent Simultaneous Bilateral TKA ePoster Presentation Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF Dongho Kwak, MD, KOREA, REPUBLIC OF Sungcheol Yang, MD, KOREA, REPUBLIC OF Hyukjin Jang, MD, KOREA, REPUBLIC OF Ryu Kyoung Cho, MD, KOREA, REPUBLIC OF Yong In, MD, PhD, KOREA, REPUBLIC OF
Large Reduction In Postoperative Posterior Tibial Slope Risks Anterior Collapse Of The Tibial Component In Fixed-Bearing Unicompartmental Knee Arthroplasty ePoster Presentation Kazuhisa Hatayama, MD, PhD, JAPAN Masanori Terauchi, MD, JAPAN Shingo Kurihara, MD, JAPAN Satoshi Nonaka, MD, JAPAN Hibiki Kakiage, MD, JAPAN
Central Sensitization is Associated with Persistent Postoperative Pain and Inferior Patient-Reported Outcomes in Patients Undergoing Unicompartmental Knee Arthroplasty ePoster Presentation Yong In, MD, PhD, KOREA, REPUBLIC OF Dongho Kwak, MD, KOREA, REPUBLIC OF Sungcheol Yang, MD, KOREA, REPUBLIC OF Hyukjin Jang, MD, KOREA, REPUBLIC OF Ryu Kyoung Cho, MD, KOREA, REPUBLIC OF Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF
Subtalar Joint Compensation using Full-length Standing Lower Extremity Anteroposterior Radiograph after Total Knee Arthroplasty for Varus Osteoarthritis in Nara Medical University Hospital with 2-year Follow-up ePoster Presentation Jerre Co De Guzman, MD, PHILIPPINES Munehiro Ogawa, MD, PhD, JAPAN Yusuke Ozaki, MD, JAPAN Yasuhito Tanaka, Prof., JAPAN Yuki Nishimura, MD, JAPAN Maria Elizabeth Mercado, MD, MAS, PHILIPPINES
Intraoperative Surgeon-Performed vs. Conventional Anesthesiologist-Performed Continuous Adductor Canal Block In Total Knee Arthroplasty: A Randomized Controlled Trial ePoster Presentation Chayut Chaiperm, MD, THAILAND Srihatach Ngarmukos, MD, THAILAND Aree Tanavalee, MD, THAILAND Chotetawan Tanavalee, MD, THAILAND Wirinaree Kampitak, MD, THAILAND

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Knee Arthroscopy Prior to UKA Does Not Cause Infection

Knee Arthroscopy Prior to UKA Does Not Cause Infection

Introduction

Methods

Results

Conclusion

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Knee Arthroscopy Prior to UKA Does Not Cause Infection

Knee Arthroscopy Prior to UKA Does Not Cause Infection

Introduction

Methods

Results

Conclusion

More 2023 ISAKOS Congress Content