Original Article

Osteoporosis International

, Volume 16, Issue 8, pp 907-913

First online:

Decreased bone mineral density at the distal radius, but not at the lumbar spine or the femoral neck, in Japanese type 2 diabetic patients

  • T. MajimaAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , Y. KomatsuAffiliated withDepartment of Medicine and Clinical Science, Kyoto University Graduate School of Medicine Email author 
  • , T. YamadaAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , Y. KoikeAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , M. ShigemotoAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , C. TakagiAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , I. HatanakaAffiliated withDepartment of Endocrinology and Metabolism, Rakuwakai Otowa Hospital
  • , K. NakaoAffiliated withDepartment of Medicine and Clinical Science, Kyoto University Graduate School of Medicine

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Abstract

The purpose of this study is to assess the association between type 2 diabetes and bone mineral density. This study included 145 Japanese patients (64 men and 81 women) with type 2 diabetes and 95 non-diabetic control subjects (41 men and 54 women) of similar age. We measured bone mineral density (BMD) at the sites with different cortical/cancellous bone ratio (lumbar spine, femoral neck, and distal radius) using dual-energy X-ray absorptiometry. BMD and Z score at the distal radius were significantly lower in type 2 diabetic patients than those in control subjects, and in type 2 diabetic patients, the Z score at the distal radius was lower than that at their own lumbar spine and femoral neck. In type 2 diabetic patients, negative correlation between BMD and the mean HbA1c during the previous 2 years was found significantly at the distal radius in both genders and at the femoral neck in women. These results indicate the selective cortical bone loss in type 2 diabetes and suggest the importance of also determining BMD at the radius and keeping good metabolic control to prevent bone loss in type 2 diabetic patients.

Keywords

Bone mineral density Distal radius Insulin levels Type 2 diabetes mellitus