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 degrees (6.5-10.0 degrees ) for FNA, 19 degrees (16.0-22.0 degrees ) for AA and 27 degrees (23.5-30.0 degrees ) for CA. AA and 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 degrees lower and the CA values were 3-5 degrees 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.
journal_name
Indian J Orthopjournal_title
Indian journal of orthopaedicsauthors
Maheshwari AV,Zlowodzki MP,Siram G,Jain AKdoi
10.4103/0019-5413.65156subject
Has Abstractpub_date
2010-07-01 00:00:00pages
277-82issue
3eissn
0019-5413issn
1998-3727journal_volume
44pub_type
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