International Journal of Gynecology & Obstetrics
Volume 109, Issue 3 , Pages 223-225, June 2010

Bone mineral density in women using the subdermal contraceptive implant Implanon for at least 2years

  • Saipin Pongsatha

      Affiliations

    • Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
    • Corresponding Author InformationCorresponding author. Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand. Tel.: +66 53 649429; fax: +66 53 946112.
    • ,
  • Molrudee Ekmahachai

      Affiliations

    • Department of Radiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
    • ,
  • Nuchanart Suntornlimsiri

      Affiliations

    • Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
    • ,
  • Nuntana Morakote

      Affiliations

    • Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
    • ,
  • Somsak Chaovisitsaree

      Affiliations

    • Department of Obstetrics and Gynecology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand

Received 8 October 2009; received in revised form 12 January 2010; accepted 8 February 2010. published online 08 March 2010.

Abstract 

Objective

To compare the effect of the long-term use of a subdermal single-rod contraceptive implant on bone mineral density (BMD) between users and a control group.

Methods

In this cross-sectional study, BMD was measured at the lumbar spine, femur, and distal radius and ulna in 100 Thai women of reproductive age, 50 who had used the Implanon implant for contraception for at least 2years and 50 controls.

Results

Ethnicity, age, age at menarche, parity, menstrual pattern, and body mass index were similar in the 2 groups. The mean duration of Implanon use was 32.8±6.3months. Although the prevalence of osteoporosis was rare at all sites in both groups, the Implanon users had a significantly lower BMD at the distal radius and ulna than the controls.

Conclusion

The long-term use of Implanon seemed to have a negative impact on the mineral density of the distal radius and ulna.

Keywords: Bone mass density, Contraceptive implant, Distal radius, Distal Ulna Femur, Implanon, Lumbar spine

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PII: S0020-7292(10)00065-2

doi:10.1016/j.ijgo.2010.01.018

International Journal of Gynecology & Obstetrics
Volume 109, Issue 3 , Pages 223-225, June 2010

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