Osteoporosis International

, Volume 19, Issue 9, pp 1301–1306 | Cite as

Hip axis length variation: its correlation with anthropometric measurements in women from three ethnic groups

  • P. Clark
  • L. J. Tesoriero
  • D. J. Morton
  • J. O. Talavera
  • A. Karlamangla
  • D. L. Schneider
  • W. J. Wooten
  • E. Barrett-Connor
Original Article

Abstract

Summary

We compared hip axis length (HAL) in 157 non-Hispanic white women, 292 African-American women, and 210 Mexican-American women. After adjusting for maximal hip girth, there were no residual differences in HAL by ethnicity. Differences in hip fracture risk seen between these groups cannot be explained by ethnic differences in HAL.

Introduction

Hip axis length (HAL) has been reported to be an independent predictor of hip fracture. Significant ethnic differences in HAL have been noted, but no direct comparison has been made between African-American, Mexican-American, and non-Hispanic white women using the same protocol.

Methods

We compared 157 non-Hispanic white women from the Rancho Bernardo Study, 292 women from the Health Assessment Study of African-American Women, and 210 women from the Skeletal Health of Mexican-American Women Project. A standardized questionnaire was used to obtain medical history; height, weight, waist girth, and hip girth were measured; and percentage body fat and HAL were obtained using dual energy X-ray absorptiometry. All HAL comparisons were adjusted for maximum hip girth to control for differences in size magnification by fan-beam absorptiometry.

Results

Though there were ethnic differences in the unadjusted HAL measurement, after adjusting for hip circumference, there were no residual differences in HAL with regard to ethnicity: 10.7 cm in Mexican-American women vs. 10.8 in non-Hispanic white women and African-American women (p = 0.61).

Conclusions

There were no ethnic differences in HAL in women from the three ethnic groups. Differences in fracture risk among these groups cannot be explained by ethnic differences in HAL.

Keywords

Ethnic differences Hip axis length Hip fracture Hip geometry Women 

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2008

Authors and Affiliations

  • P. Clark
    • 1
    • 3
  • L. J. Tesoriero
    • 3
  • D. J. Morton
    • 3
  • J. O. Talavera
    • 2
  • A. Karlamangla
    • 4
  • D. L. Schneider
    • 5
  • W. J. Wooten
    • 3
  • E. Barrett-Connor
    • 3
  1. 1.Clinical Epidemiology Unit CMN Siglo XXI-IMSS, Faculty of MedicineUniversidad Nacional Autónoma de México UNAMMexico CityMexico
  2. 2.Clinical Epidemiology Unit CMN Siglo XXI-IMSS, Faculty of MedicineUniversidad Autónoma del Estado de MéxicoTolucaMexico
  3. 3.Department of Family and Preventive Medicine, School of MedicineUniversity of California, San DiegoLa JollaUSA
  4. 4.Division of GeriatricsUniversity of CaliforniaLos AngelesUSA
  5. 5.Department of MedicineUniversity of CaliforniaSan Diego, La JollaUSA

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