Premium
Prevalence of Radiographic and Magnetic Resonance Imaging Features of Patellofemoral Osteoarthritis in Young and Middle‐Aged Adults With Persistent Patellofemoral Pain
Author(s) -
Collins Natalie J.,
Oei Edwin H. G.,
Kanter Janneke L.,
Vicenzino Bill,
Crossley Kay M.
Publication year - 2019
Publication title -
arthritis care and research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.032
H-Index - 163
eISSN - 2151-4658
pISSN - 2151-464X
DOI - 10.1002/acr.23726
Subject(s) - magnetic resonance imaging , medicine , osteoarthritis , patellofemoral joint , radiography , knee pain , orthodontics , physical therapy , patella , radiology , pathology , alternative medicine
Objective To describe the prevalence of radiographic features of patellofemoral ( PF ) osteoarthritis ( OA ) in adults with persistent PF pain, to describe the prevalence of magnetic resonance imaging ( MRI )–defined PF OA and compare it to that in age‐ and sex‐matched controls, and to explore the prevalence of radiographic and MRI ‐defined PF OA across age, sex, and body mass index ( BMI ) groups. Methods This cross‐sectional study included 84 individuals with PF pain ≥3 months duration and 26 age‐ and sex‐matched controls. In participants with PF pain, posteroanterior, lateral, and skyline radiographs were obtained. Radiographic OA features were scored using Kellgren/Lawrence (K/L) criteria and a radiographic atlas, with K/L grade ≥2 defined as OA , and K/L grade 1 as early OA . Both groups underwent 3.0 Tesla MRI scans, scored using the MRI Osteoarthritis Knee Score criteria. Compartmental prevalence of MRI OA features was based on cartilage lesions, bone marrow lesions ( BML s), and osteophytes. Results Overall, 20 participants (24%) with PF pain had radiographic PF OA (K/L grade ≥2), and 36 participants (43%) had early PF OA (K/L grade 1). MRI ‐defined PF OA was more prevalent in participants with PF pain (16–29%) than in controls (4–12%), irrespective of how PF OA was defined. Within the PF pain group, the prevalence of PF OA on radiographs and MRI was greater in participants who were older or female or who had a higher BMI . Conclusion Features of radiographic and MRI ‐defined PF OA were evident in 20–30% of adults ages 26–50 years with persistent PF pain, with greater prevalence observed in those who were older, or female, or who had a higher BMI . MRI ‐defined PF OA was more prevalent in individuals with PF pain than in pain‐free controls, especially when defined as a full‐thickness cartilage lesion with BML .