Hyaline cartilage calcification of the first metatarsophalangeal joint is associated with osteoarthritis but independent of age and BMI

Table 4 Distribution of the histological OA grade and the corresponding prevalence of cartilage calcification of the 1^st MH (n = 168)ᅟ

hOA by OARSI	Distribution of hOA		DCR-detectable cartilage calcification
(0–6)	%	(n)	%	(n)
0	12.5	21/168	14.3	3/21
1	54.2	91/168	24.2	22/91
2	19.0	32/168	43.8	14/32
3	8.3	14/168	64.3	9/14
4	2.4	4/168	100.0	4/4
5	2.4	4/168	75.0	3/4
6	1.2	2/168	100.0	2/2
Grade < 3	85.7	144/168	27.1	39/144
Grade ≥ 3	14.3	24/168	75.0	18/24

Distribution of the histological OA grade (hOA) by OARSI (0–6) and the corresponding prevalence of DCR-detectable cartilage calcification of all analyzed metatarsal heads (n = 168) in the study population. A histological OA grade by OARSI ≥ 3 was considered as severe osteoarthritis

ISSN: 1471-2474