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Background  Hip geometry influences hip fracture risk. Hip fractures are common, and they are associated with pain, disability, premature death and marked costs on society. Osteoporotic fractures are frequent in Arctic populations and increase with advancing age in this society with a steep rise in life expectancy. Greenland Inuit is a distinct ethnic group, and data on hip geometry is missing. We thus aimed to describe hip geometry in 7.7 years of consecutive hip fracture patients in Greenland.    Methods  We evaluated collodiaphysial angle, femoral neck length, the outer and inner diameter of the femur at 2 and 5 centimetres below the centre of the lesser trochanter and the cortical thickness from pelvic and hip radiographs in all patients operated in Greenland over 7.7 years. We included all 84 patients with one non-fractured hip visible for geometric analysis. Analyses were conducted in duplicate.    Results  We found a collodiaphysial angle of 134.8/132.6 o  in men/women ( p  = 0.06) and a femoral neck length of 38.0/33.9 mm in men/women ( p  = 0.001). Cortical thickness was affected by sex in the adjusted analysis ( p  < 0.001). Cortical thickness index at 5 cm below the centre of the lesser trochanter decreased with age ( p  = 0.026) and may be influenced by height (2 cm below the centre of the lesser trochanter,  p  = 0.053).    Conclusion  Our findings differed from European data and suggest a delicate balance in hip geometry in Arctic populations. Ethnic peculiarities influence the structure of the hip and may influence fracture risk. A focus on hip geometry and risk factors for osteoporotic fractures in Arctic populations is warranted.

Hip geometry in hip fracture patients in Greenland occurring over a 7.7-year period