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Ultrasound reveals a high prevalence of CPPD in consecutive patients with knee pain
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Ultrasound reveals a high prevalence of CPPD in consecutive patients with knee pain
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Journal Article
Ultrasound reveals a high prevalence of CPPD in consecutive patients with knee pain
2024
Overview
The objective of this study is to estimate the prevalence of US findings indicative of calcium pyrophosphate deposition (CPPD) in patients with knee pain. Consecutive patients with knee pain, equally distributed among males and females in seven different age-decades (21–90 years), were enrolled in a cross-sectional study. The presence of US OMERACT-defined CPPD (medial and lateral menisci and femoral hyaline cartilage) and osteophytes (medial and lateral compartments of the tibiofemoral joint) was scored as presence/absence in both knees. Four hundred twenty participants were enrolled (210 men/210 women). Fibrocartilage and hyaline cartilage CPPDs were detected by US in 94/420 (22.4%) and 41/420 (9.8%) participants, respectively. No significant sex differences were noted. The prevalence and the extent of CPPD increased with age. Fibrocartilage and hyaline cartilage CPPDs were identified in 0/60 participants in the third decade, and in 28/60 (46.7%) and 14/60 (23.3%) participants in the ninth decade, respectively (p for trend < 0.01). While fibrocartilage and hyaline cartilage CPPD is virtually absent in subjects younger than 40 and 50 years old, their prevalence steeply increases above from these age groups. Age (aIRR, 1.03; 95% CI, 1.02–1.05), osteophyte score (aIRR, 1.40; 95% CI, 1.22–1.60), and hyaline cartilage CPPD score (aIRR, 2.68; 95% CI, 2.06–3.49) were associated with fibrocartilage CPPD score, whereas age (aIRR, 1.02; 95% CI, 1.01–1.05) and fibrocartilage CPPD score (aIRR, 2.92; 95% CI, 2.29–3.72) were associated with hyaline cartilage CPPD score in multivariable negative binomial regression analyses. In conclusion, we report the US prevalence of CPPD in patients with knee pain. Fibrocartilage CPPD occurs at a younger age and is more prevalent than hyaline cartilage CPPD.Key points• Fibrocartilage CPPD occurs at a younger age and is more prevalent than hyaline cartilage CPPD.• Fibrocartilage and hyaline cartilage CPPDs are virtually absent in subjects younger than 40 and 50 years old.• In subjects older than 80 years, fibrocartilage and hyaline cartilage CPPD prevalence rises up to 46.7% and 23.3%, respectively.
Publisher
Springer Nature B.V
Subject
