| Abstract ID |
| 20260093 |
| Category |
| Knee: Meniscus |
| Preferable Presentation |
| Both |
| Title |
| OBESITY IS ASSOCIATED WITH INFERIOR PATIENT-REPORTED OUTCOMES AFTER MEDIAL MENISCUS POSTERIOR ROOT REPAIR: A RETROSPECTIVE COHORT STUDY |
| Author |
|
| Presenter |
| Napatpong Thamrongskulsiri |
| Abstract |
| Background: Obesity has been implicated as a risk factor for knee osteoarthritis progression; however, its influence on outcomes after arthroscopic medial meniscus posterior root repair remains unclear. Purpose: To compare clinical and structural outcomes after medial meniscus posterior root repair between patients with and without obesity. Study Design: Retrospective cohort study; Level III. Methods: Consecutive patients who underwent arthroscopic medial meniscus posterior root repair between 2019 and 2023 were retrospectively reviewed. Patients were stratified into non-obesity (body mass index [BMI] <30 kg/m²) and obesity (BMI ≥30 kg/m²) groups based on World Health Organization criteria. The primary outcome was the 2-year postoperative International Knee Documentation Committee (IKDC) subjective knee evaluation score. Secondary outcomes included Lysholm score, proportion of patients achieving the minimal clinically important difference (MCID) for the IKDC score, and postoperative magnetic resonance imaging (MRI) findings at 1 year, including meniscal healing status and medial meniscal extrusion. Results: Sixty-six patients were included, comprising 45 in the non-obesity group and 21 in the obesity group. Preoperative patient-reported outcomes were comparable between groups. At 2-year follow-up, the non-obesity group demonstrated statistically significantly higher IKDC scores compared with the obesity group (69.6 ± 11.6 vs 62.8 ± 9.8; p = 0.01), as well as higher Lysholm scores (82.2 ± 11.9 vs 74.7 ± 9.1; p = 0.02). Overall, 89.4% of patients achieved the MCID for the IKDC score; moreover, the proportion was statistically significantly higher in the non-obesity group than in the obesity group (95.6% vs 76.2%; p = 0.02). Postoperative MRI at 1 year was available for 30 patients and demonstrated no significant differences between groups in meniscal healing status or medial meniscal extrusion. Conclusion: Patients with obesity had statistically significantly lower 2-year postoperative patient-reported outcomes and a lower rate of MCID achievement after medial meniscus posterior root repair, whereas postoperative structural healing did not differ significantly between groups. |