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Association Between Patellofemoral and Medial Tibiofemoral Compartment Osteoarthritis Progression: Exploring the Effect of Body Weight Using Longitudinal Data From Osteoarthritis Initiative (Oai) Publisher Pubmed



Pishgar F1 ; Guermazi A2 ; Ashrafganjouei A3 ; Hajmirzaian A1 ; Roemer FW2, 4 ; Zikria B5 ; Sereni C6 ; Hakky M7 ; Demehri S1
Authors
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Authors Affiliations
  1. 1. Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, 601 N Caroline St, JHOC 3142, Baltimore, 21287, MD, United States
  2. 2. Department of Radiology, VA Boston Healthcare System, Boston University School of Medicine, Boston, MA, United States
  3. 3. Non-communicable Diseases Research Center, Endocrinology and Metabolism Population Science Institute, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Radiology, University of Erlangen-Nuremberg, Erlangen, Germany
  5. 5. Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
  6. 6. Department of Radiology, University of Massachusetts Medical School, Boston, MA, United States
  7. 7. Department of Radiology, Florida Hospital, Maitland, FL, United States

Source: Skeletal Radiology Published:2021


Abstract

Objectives: To investigate the associations of medial and lateral patellofemoral osteoarthritis (PF-OA) at baseline with symptomatic and radiographic OA outcomes in the medial tibiofemoral compartment (MTFC) over 4 years, according to baseline overweight status. Methods: Data and MRI images of 600 subjects in the FNIH-OA biomarkers consortium were used. Symptomatic worsening and radiographic progression of MTFC-OA were defined using Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain scores and MTFC joint space narrowing (JSN) from baseline to 4-year follow-up. Baseline MRIs were read to establish PF-OA diagnosis. The association between baseline regional PF-OA pattern and odds for MTFC-OA progression was evaluated using regression models (adjusted for relevant confounding covariates including body mass index (BMI), age, sex, PF alignment measurements, KL grade, and knee alignment). To evaluate the effect modifying role for overweight status, stratification analysis was performed (BMI ≥ 25 vs. < 25 kg/m2). Results: At baseline, 340 (56.7%), 255 (42.5%), and 199 (33.2%) subjects had OA in the medial, lateral, and both PF compartments. Baseline medial PF-OA was associated with WOMAC pain score and MTFC JSN progression at 4 years (Adjusted OR:1.56[95%CI:1.09–2.23] and 1.59[1.11–2.28], respectively) but not lateral PF-OA. In stratification analysis, overweight status was found to be an effect modifier for medial PF-OA and WOMAC pain (OR in overweight vs. non-overweight subjects:1.65[1.13–2.42] vs. 0.50[0.12–1.82]) as well as MTFC-JSN progression (1.63[1.12–2.4] vs. 0.75[0.19–2.81]). Conclusions: In addition to the known confounding effect of BMI for PF-OA and MTFC-OA, the overweight status may also play an effect modifier role in the association between baseline medial PF-OA and MTFC-OA progression, which is amenable to secondary prevention. © 2021, ISS.
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