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Osteoporosis International

Erschienen in:

08.07.2020 | Original Article

An analysis of osteoporosis in patients with hereditary multiple exostoses

verfasst von: K. Matsumoto, H. Ogawa, S. Nozawa, H. Akiyama

Erschienen in: Osteoporosis International | Ausgabe 12/2020

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Abstract

Summary

We analyzed osteoporosis in 20 HME patients. According to the T-score of BMD, 30% and 67.5% of the patients fell in the range of osteopenia in the lumbar spine and femoral neck. Our results indicate HME patients have low bone mass. They do not have abnormal bone metabolism.

Introduction

There are few reports of osteoporosis in hereditary multiple exostoses (HME) patients. Therefore, the purpose of this study was to analyze osteoporosis in HME patients.

Methods

This retrospective cohort study included 20 patients diagnosed with HME. Patients underwent bone mineral density (BMD) measurement of the lumbar spine (n = 20) and femoral neck (n = 40). Bone metabolic parameters, including serum osteocalcin and urinary cross-linked N-telopeptide of type 1 collagen (NTx), were analyzed in all subjects. EXT1 and EXT2 genes were sequenced using genomic DNA. We also examined the correlation between genotype and BMD Z-score and T-score.

Results

The mean BMD values of the lumbar spine were 1.085 ± 0.116 g/cm² (n = 11) in male and 1.108 ± 0.088 g/cm² (n = 9) in female. The mean BMD values of the femoral neck area were 0.759 ± 0.125 g/cm² (n = 22) in male and 0.749 ± 0.115 g/cm² (n = 18) in female. Z-score of most HME patients show < 0, indicating that these patients tend to have low bone mass compared with the age-matched population. According to the T-score of BMD, 30% (6 of 20) and 67.5% (27 of 40) of the patients fell in the range of osteopenia in the lumbar spine and femoral neck areas, respectively. Serum osteocalcin and urinary NTx were in the normal range in most patients. There was no significant correlation between genotypes and Z-score.

Conclusion

HME patients have low bone mass, especially in the femoral neck area. They do not have abnormal bone metabolism, and there was no correlation between genotypes and Z-score.

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Titel: An analysis of osteoporosis in patients with hereditary multiple exostoses
verfasst von: K. Matsumoto
H. Ogawa
S. Nozawa
H. Akiyama
Publikationsdatum: 08.07.2020
Verlag: Springer London
Erschienen in: Osteoporosis International / Ausgabe 12/2020
Print ISSN: 0937-941X
Elektronische ISSN: 1433-2965
DOI: https://doi.org/10.1007/s00198-020-05533-7

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An analysis of osteoporosis in patients with hereditary multiple exostoses

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Summary

Introduction

Methods

Results

Conclusion

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Results

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