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  • Title: Is the predictive power of previous fractures for new spine and non-spine fractures associated with biochemical evidence of altered bone remodelling? The EPOS study. European Prospective Osteoporosis Study.
    Author: Vergnaud P, Lunt M, Scheidt-Nave C, Poor G, Gennari C, Hoszowski K, Vaz AL, Reid DM, Benevolenskaya L, Grazio S, Weber K, Miazgowski T, Stepan JJ, Masaryk P, Galan F, Armas JB, Lorenc R, Havelka S, Perez Cano R, Seibel M, Armbrecht G, Kaptoge S, O'Neill TW, Silman AJ, Felsenberg D, Reeve J, Delmas PD.
    Journal: Clin Chim Acta; 2002 Aug; 322(1-2):121-32. PubMed ID: 12104091.
    Abstract:
    BACKGROUND: In the European Prospective Osteoporosis Study (EPOS), a past spine fracture increased risk of an incident fracture 3.6 - 12-fold even after adjusting for BMD. We examined the possibility that biochemical marker levels were associated with this unexplained BMD-independent element of fracture risk. METHODS: Each of 182 cases in EPOS of spine or non-spine fracture that occurred in 3.8 years of follow-up was matched by age, sex and study centre with two randomly assigned never-fractured controls and one case of past fracture. Analytes measured blind were: osteocalcin, bone-specific alkaline phosphatase, total alkaline phosphatase, serum creatinine, calcium, phosphate and albumin, together with the collagen cross-links degradation products serum CTS and urine CTX. Most subjects also had bone density measured by DXA. RESULTS: Cases who had recent fractures did not differ in marker levels from cases who had their last fracture more than 3 years previously. No statistically significant effect of recent fracture was found for any marker except osteocalcin, which was 17.6% lower in recent peripheral cases compared to unfractured controls (p<0.05) and this was independent of BMD. CONCLUSION: Past fracture as a risk indicator for future fracture is not strongly mediated through increased bone turnover.
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