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Elderly men have much lower vertebral fracture risk than elderly women even at advanced age: the MrOS and MsOS (Hong Kong) year 14 follow-up radiology results.

Arch Osteoporos. 2020 Nov 07;15(1):176 Authors: Wáng YXJ, Che-Nordin N, Leung JCS, Man Yu BW, Griffith JF, Kwok TCY

INTRODUCTION: For MrOS MsOS (Hong Kong) baseline (BL) studies, 2000 men and 2000 women ≥ 65 years were recruited during 2001 to 2003. This study presents the year 14 follow-up (FU). MATERIALS: Whole spine MRI was performed in 271 males (mean, 82.8 ± 3.6 years) and 150 females (mean, 82.0 ± 4.29 years). Osteoporotic vertebral deformity (OVD) classification included no OVD (grade 0), and OVDs with < 20%, 20~25%, > 25%~1/3, > 1/3~40%, > 40%~2/3, and > 2/3 height loss (grade 1~6). With an existing VD, a further height loss of ≥ 15% was a VD progression. A new incident VD was a change from grade 0 to ≥ grade 2 or to grade 1 with ≥ 10% height loss. OVD progression and new incident OVD were considered incident VF. RESULTS: The proportion of osteoporotic subjects only slightly increased during FU for men but doubled for women. Groupwise, OVD was not associated with back pain in men; but OVD with > 1/3 height loss was associated with back pain in women. For subjects without BL OVD, 7.9% of men and 14.6% of women had incident VF. For subjects with BL OVD of ≥ 20% height loss, men's and women's incident VF were 17.6% and 52.6%, respectively, counting subject and 1.68% and 7.89%, respectively, counting vertebra. CONCLUSION: Elderly men with or without existing osteoporotic VD have much lower future VF risk than elderly women. PMID: 33159570 [PubMed - in process]

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