Bone cross-sectional geometry is not associated with atypical @entity3330 in Asian female chronic XXXX users.

@entity1 @entity4024 @entity5520 @entity79 @entity10575 @entity121 @entity3330
INTRODUCTION: @entity3330 ( @entity3330 ) tend to occur in Asian @entity1 with prolonged @entity5520 exposure. Hip geometry is thought to contribute to the risk of @entity3330 formation. We examined the hip structural geometry parameters in Asian female chronic @entity5520 users who sustained an @entity3330 and compared them to chronic @entity5520 users who did not sustain any @entity3330 (NFF) and @entity5520 - @entity4024  ve @entity1 who sustained an @entity3330 ( @entity3330 ). MATERIALS _ METHODS: Thirty-one @entity1 with AFFs were gender and age-matched to 31 @entity1 with NFFs and 49 @entity1 with OFFs. The Hip Structural Analysis parameters analyzed were @entity79 ( @entity79 ), cross-sectional area (CSA; a metric of resistance to axial compression), section modulus (SM; a metric of resistance to tensile loads), @entity121 ( @entity121 ; mean thickness of the femoral cortices), buckling ratio (BR; an index of likelihood of local buckling), and neck shaft angle (NSA; the angle between the neck and shaft axes). The regions analyzed were three cross-sections measured at the narrowest femoral neck diameter, the intertrochanteric area, and the proximal femoral shaft. One-way ANOVA with Bonferroni adjustment for multiple comparisons was used to compare parameters between the three @entity1 groups, with statistical significance defined as p<0.05. RESULTS: There were no statistical differences in parameters between @entity1 with AFFs and @entity1 with NFFs at all measured regions. @entity1 with AFFs and NFFs had statistically higher @entity79 , CSA, @entity121 , SM values and lower BR values at the @entity10575 and IT regions than @entity1 with OFFs. Additionally, @entity1 with NFFs had statistically higher SM values at the IT region than @entity1 with OFFs, while @entity1 with AFFs had statistically higher @entity79 , CSA, and @entity121 values at the FS region. All other measured parameters were not statistically different between the groups. CONCLUSIONS: Chronic @entity5520 users with and without AFFs had similar femoral structural geometries. Unlike in other populations, varus neck shaft angles were not found to be associated with AFFs in Asian female chronic @entity5520 users. Thus, bone cross-sectional geometry is not likely to be associated with AFFs in Asian female chronic @entity5520 users. Hip Structural Analysis does not show an increased predilection for tensile failure in AFFs.
