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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Clinical Comparison and Survival Rate Between Unicompartmental Knee Arthroplasty and High Tibial Osteotomy With An External Fixator For Varus Knee In Patients Younger Than 60 Years at Mid-Term Follow-Up ePoster Presentation Amit Kumar Yadav, M.S (Orth),DNB(Orth),MNAMS, UNITED KINGDOM Riccardo D'Ambrosi, MD, ITALY Mangal Parihar, MS Ortho, INDIA
Total Knee Arthroplasty Without Patellar Component Replacement. Does it Increase the Risk of Revision? Local Experience Analysis ePoster Presentation Zoy Anastasiadis, MD, CHILE Diego Edwards, MD, CHILE Sergio Arellano, MD, CHILE Andrés Schmidt-Hebbel, MD, CHILE Eduardo Gardella, MD, CHILE Nicolás González-Kusjanovic, MD, MSc, CHILE Alex Vaisman, MD, Prof., CHILE
Lateral Unicompartmental Knee Arthroplasty (UKA) Showed a Lower Risk of Failure Compared to Medial Unicompartmental Knee Arthroplasty in the Register of Prosthetic Orthopedic Implants (RIPO) ePoster Presentation Stefano Zaffagnini, MD, Prof., ITALY Domenico Alesi, MD, ITALY Barbara Bordini, Stat, ITALY Stefano Fratini, MD, ITALY Cristina Ancarani, Stat, ITALY Piero Agostinone, MD, ITALY Alberto Grassi, PhD, ITALY Giulio Maria Marcheggiani Muccioli, MD, PhD, Associate Professor, ITALY
Follow-Up after Primary Total Knee Arthroplasty with the Sigma PFC implant (DePuy Synthes Inc.) in Patients with Metal Allergy or Hypersensitivity ePoster Presentation Natalie Mengis, MD, SWITZERLAND Jules-Nikolaus Rippke, Dr. med. (MD), SWITZERLAND Sebastian Schmidt, GERMANY Tudor Daniel Cucos, MD, GERMANY Luis Alfredo Navas Contreras, MD, GERMANY Daniel Krahl, MD, GERMANY Marcus Streit, Prof., GERMANY
Antibiotic-Loaded Bone Cement with Colistin at Erythromycin Do Not Decrease Chronic TKA Pji at a Long-Term ePoster Presentation Daniel Pérez-Prieto, MD, SPAIN Albert Fontanellas, MD, SPAIN Pedro Hinarejos, MD, PhD, SPAIN Juan Francisco Sanchez-Soler, MD, PhD, SPAIN Raúl Torres-Claramunt, PhD, SPAIN Joan Carles Monllau, MD, PhD, Prof., SPAIN
High Cure Rate In Hematogenous TKA PJI At A Long-Term Follow-Up By Means Of Dair Procedure ePoster Presentation Daniel Pérez-Prieto, MD, SPAIN Albert Fontanellas, MD, SPAIN Raúl Torres-Claramunt, PhD, SPAIN Juan Francisco Sanchez-Soler, MD, PhD, SPAIN Joan Carles Monllau, MD, PhD, Prof., SPAIN Pedro Hinarejos, MD, PhD, SPAIN
The Effect of Minor Adjustments to Tibial and Femoral Component Position on Soft Tissue Balance in Robotic Total Knee Arthroplasty ePoster Presentation Simon W. Young, MD, FRACS, NEW ZEALAND Matthew Carter, NEW ZEALAND Gavin William Clark, MBBS, FRACS, AUSTRALIA Christina Esposito, PhD, AUSTRALIA Matthew Walker, MBChB, FRACS, NEW ZEALAND
Bicruciate Substituting Total Knee Arthroplasty Improved Anteroposterior Displacement in Mid-Flexion Range ePoster Presentation Keinosuke Ryu, Prof., JAPAN Takanori Iriuchisima, MD, JAPAN
Use of Tibial Stem for Patients with Morbid Obesity in Total Knee Arthroplasty ePoster Presentation José Eduardo Flores Naranjo, MD, MEXICO Adrian Aziz Cortes De La Fuente, MD, MEXICO Octavio Martinez Montiel, MD, MEXICO Fernando Martinez Zuñiga, MD, MEXICO
Combined Single-Shot Infiltration Between the Popliteal Artery and Capsule of the Knee and Adductor Canal Block with Bupivacaine, Dexmedetomidine, and Dexamethasone for Total Knee Arthroplasty: A Propensity-Matched Analysis ePoster Presentation David Freccero, MD, UNITED STATES Aneesh V Samineni, BA, UNITED STATES Seroos Salavati, MD, UNITED STATES
Accuracy of the Component Alignment and Sizing in Total Knee Arthroplasty: Preoperative Templating and Postoperative Evaluation Using CT-Based 3D Pre-Operative Planning Software ePoster Presentation Takayuki Koya, MD, PhD, JAPAN Atsushi Sato, MD, PhD, JAPAN Jun Oike, MD, PhD, JAPAN Masataka Ota, MD, JAPAN Kanako Izukashi, MD, JAPAN Takayuki Okumo, MD, PhD, JAPAN Saki Yagura, MD, JAPAN Naoki Okuma, MD, JAPAN Fumiyoshi Kawashima, MD, JAPAN Hiroshi Takagi, MD, PhD, JAPAN Koji Kanzaki, Prof., JAPAN

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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