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Femoral neck anteversion, acetabular anteversion and combined anteversion in the normal Indian adult population: A computed tomographic study

Indian Journal of Orthopaedics volume 44, pages 277–282 (2010)Cite this article

Abstract

Background

Abnormal femoral neck anteversion (FNA) and/or acetabulum anteversion (AA) have long been implicated in the etiogenesis of hip osteoarthritis (OA), developmental dysplasia of the hip (DDH), and impingement, instability and wear in total hip arthroplasty (THA). Since studies on the Indian population are sparse on this topic, the purpose of this study was to report the normal values of FNA, AA and the combined anteversion (CA= FNA+ AA) in Indian adults.

Materials and Methods

FNA, AA and CA were prospectively measured in 172 normal hips in 86 Indian adults using standardized computed tomographic (CT) methods and this data was compared with the established Western values.

Results

The median values and interquartile ranges were 8° (6.5-10.0°) for FNA, 19° (16.0-22.0°) for AA and 27° (23.5-30.0°) for CA. AAand CA values were significantly (P<0.05) lower in males, and there was also a trend towards lower FNA in males. Although a negative correlation was observed between the FNA and AA, this was not strong and may not be clinically relevant.

Conclusion

When compared with the Western data, the FNA values were 3-12° lower and the CA values were 3-5° lower in Indian adults. The AA values were comparable, but were skewed towards the higher side. Further studies are needed to assess the clinical relevance of our basic science data in pathogenesis of OA, and to validate it in relation to hip surgeries like corrective osteotomies and THA.

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Author information

Affiliations

  1. Department of Orthopedics, University College of Medical Sciences, University of Delhi, Delhi, 110 095, India

    Aditya V. Maheshwari & Anil K. Jain

  2. Department of Orthopedics, Washington Hospital Center, 110 Irving ST NW, Washington, DC, USA, 200 10

    Aditya V. Maheshwari & Gautam Siram

  3. Department of Orthopedics, University of Minnesota, R200, 2450 Riverside Ave S, Minneapolis, MN, 554 54, USA

    Michael P. Zlowodzki

  4. Department of Orthopedics, Howard University Hospital, 2041 Georgia Avenue, Washington, DC, 20060, USA

    Gautam Siram

Authors
  1. Aditya V. Maheshwari
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  2. Michael P. Zlowodzki
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  4. Anil K. Jain
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Correspondence to Aditya V. Maheshwari.

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Maheshwari, A.V., Zlowodzki, M.P., Siram, G. et al. Femoral neck anteversion, acetabular anteversion and combined anteversion in the normal Indian adult population: A computed tomographic study. IJOO 44, 277–282 (2010). https://doi.org/10.4103/0019-5413.65156

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  • DOI: https://doi.org/10.4103/0019-5413.65156

Key words

  • Acetabular anteversion
  • combined anteversion
  • computed tomography
  • developmental dysplasia of the hip
  • femoral neck anteversion
  • hip anthropometry
  • hip impingement
  • Indian hips
  • proximal femoral morphology
  • total hip replacement