Summary: Preoperative subchondral BME was related to adverse postoperative clinical outcomes, however, it did not negatively influence survival rates at long-term follow-up. UKA yielded good survival rates at a mean follow-up of 9.8 years regardless of BME severity.

Background

To investigate the association between extent of subchondral bone marrow edema (BME) as classified by magnetic resonance imaging (MRI) and intermediate to long-term outcomes after unicompartmental knee arthroplasty (UKA) for medial compartment osteoarthritis.

Methods

We enrolled 150 knees (144 patients) that underwent fixed-bearing UKA between April 2003 and December 2014 with a minimum follow-up of 5 years; the mean overall follow-up duration was 9.8 years (5.1 to 17.7 years). We divided the patients into two groups based on the presence or absence of preoperative BME. Patients were also subdivided into four groups according to their BME scores determined by the MRI Osteoarthritis Knee Score (MOAKS) method. Clinical outcomes were assessed using the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) and Forgotten Joint Score. Furthermore, survival rates and relevant risk factors that affect joint survivorship were analyzed.

Results

The groups with BME demonstrated significantly worse postoperative WOMAC pain and Forgotten Joint Scores at the final follow-up than the group without BME. (all p < 0.05). We also found significant differences among the scores of groups with different BME grades (all p < 0.05). Post hoc analysis demonstrated differences between groups 1 and 2, 1 and 3, 1 and 4, and 2 and 4 (all p < 0.05) with a significant correlation between postoperative clinical outcome and the extent of BME (r = 0.430 [WOMAC pain], r = -0.342 [Forgotten Joint Score]; p < 0.05). The survival rate was 95.4% at a mean period of 9.8 years, and survival was not associated with the presence of BME (p = 0.232; log-rank test).

Conclusion

In the intermediate to long-term follow up, preoperative BME negatively impacted the clinical outcomes after UKA, although UKA contributed to excellent survival rates after a mean follow-up of 9.8 years regardless of BME severity.

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Unicompartmental Knee Replacement and Femoropatellar Arthritis. 110 Ahroplasties with a Mean Follow p of 6 years. ePoster Presentation Stefano Gaggiotti, MD, ARGENTINA Santino Gaggiotti, MD, ARGENTINA Julio Cesar Ringa Gabriel Gaggiotti, MD, ARGENTINA
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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
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Bilateral Simultaneous Unicompartimental Knee Arthroplasty. Midterm Results in 86 Arthroplasties with an Average Follow-Up Of 6.2 Years ePoster Presentation Stefano Gaggiotti, MD, ARGENTINA Gabriel Gaggiotti, MD, ARGENTINA Santino Gaggiotti, MD, ARGENTINA Julio Cesar Ringa
Advanced Active Robotic Technology for Total Knee Arthroplasty: A Learning Curve of Operative Time and Alignment Accuracy ePoster Presentation Yong-Beom Park, MD, PhD, KOREA, REPUBLIC OF Young-Bong Ko, MD, KOREA, REPUBLIC OF Dong-Hoon Lee, MD, KOREA, REPUBLIC OF Hyun-Chul Nam, MD, KOREA, REPUBLIC OF Seong-Hwan Kim, MD,Ph.D, MStat, KOREA, REPUBLIC OF
Association Between The Femoral And Tibial Component Positions and Intraoperative Knee Kinematics In Posterior-Stabilized Total Knee Arthroplasty ePoster Presentation Mitsuru Hanada, MD, PhD, JAPAN Yukihiro Matsuyama, MD, PhD, Prof., JAPAN
Palliative Arthroscopic Debridement with Continuous Irrigation for the Infection TKA of High Mortality Risk Patients ePoster Presentation Yoon Sang Jeon, MD, KOREA, REPUBLIC OF Sung-Sahn Lee, MD., PhD., KOREA, REPUBLIC OF Yoon Cheol Nam, MD, KOREA, REPUBLIC OF Dong Jin Ryu, MD, PhD., KOREA, REPUBLIC OF
Total Knee Arthroplasty Outcomes Following Anterior Cruciate Ligament Reconstruction ePoster Presentation Brian Rao, BS, UNITED STATES Alex C. Dibartola, MD, MPH, UNITED STATES Eric Milliron, BS, UNITED STATES Parker Cavendish, BS, UNITED STATES James C. Kirven, BS, UNITED STATES Spencer E. Talentino, MD, UNITED STATES Charles Qin, MD, UNITED STATES Ryan H. Barnes, MD, UNITED STATES Robert A. Duerr, MD, UNITED STATES Christopher C. Kaeding, MD, UNITED STATES Robert A Magnussen, MD, MPH, UNITED STATES David C. Flanigan, MD, UNITED STATES
Incidence and Prevention of Deep Vein Thrombosis Using Thromboprophylaxis in Total Knee Replacement: A Prospective Clinical Study ePoster Presentation Amit Lakhani, MS, DNB, MRCPS(Glassg), MNAS, INDIA
Modular Knee Arthrodesis as Definitive Treatment for Periprosthetic Infection, Bone Loss, and Failure of the Extensor Mechanism after Total Knee Arthroplasty ePoster Presentation Gloria Shoshana Coden, MD, UNITED STATES Maksym Bartashevskyy, BA, UNITED STATES Zachary Berliner, MD, UNITED STATES Ruijia Niu, MPH, UNITED STATES James V. Bono, MD, UNITED STATES Ayesha Abdeen, MD, UNITED STATES Eric L. Smith, MD, UNITED STATES
Does Robotic Assisted Unicompartmental Knee Arthroplasty Restore Native Jointline More Accurately Than With Conventional Instruments? ePoster Presentation Ashok Kumar Podhili Subramani, MS, INDIA Shantanu S. Patil, MBBS, MS(Orth), INDIA SAWAN PAWAR, MBBS MS (ORTH), INDIA Kalaivanan Kanniyan, MBBS MS Orth, INDIA karthik jayachandran, MS, INDIA PICHAI SURYANARAYAN, MBBS MS ORTH, INDIA
Compliance and Outcome of Osteoporosis Treatment After Total Knee Arthroplasty ePoster Presentation Yun Seong Choi, MD, KOREA, REPUBLIC OF Seung Hoon Lee, MD, KOREA, REPUBLIC OF Jung Ro Yoon, MD, KOREA, REPUBLIC OF Young Bin Shin, MD, KOREA, REPUBLIC OF Tae Hyuk Yoon, MD, KOREA, REPUBLIC OF

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Preoperative Bone Marrow Edema Negatively Impacts Intermediate to Long-Term Outcomes after Unicompartmental Knee Arthroplasty

Preoperative Bone Marrow Edema Negatively Impacts Intermediate to Long-Term Outcomes after Unicompartmental Knee Arthroplasty

Background

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Conclusion

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Preoperative Bone Marrow Edema Negatively Impacts Intermediate to Long-Term Outcomes after Unicompartmental Knee Arthroplasty

Preoperative Bone Marrow Edema Negatively Impacts Intermediate to Long-Term Outcomes after Unicompartmental Knee Arthroplasty

Background

Methods

Results

Conclusion

More 2023 ISAKOS Congress Content