J Med Assoc Thai 2009; 92 (9):60

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Geometry of Proximal Femur in the Prediction of Femoral Neck Fracture in the Elderly Female Thai Population
Lektrakul N Mail, Ratarasarn O

A retrospective study of two groups of 157 patients with one-sided hip fracture and 157 aged matched
control group was performed in Siriraj hospital. Geometric measurement of femoral neck was performed as hip
axis length (HAL), femoral neck length (FNL), femoral neck width (FNW), femoral head diameter (FHD),
acetabular bone width (ABW), and femoral neck–shaft angle (NSA).

All geographic parameters are higher in length/width or degree in the femoral neck fracture group
than in the normal control group. Among these parameters, ABW has the strongest association with femoral
neck fracture (p 0.000, odds ratio = 2.85), followed by FNW (p 0.001, odds ratio = 2.51).

According to the low sensitivity and specificity, and ROC curve, using this parameter as a screening
tool for femoral neck fracture is still questionable. Further prospective study with a standard position, interval
changing of femoral geometry, or combined with bone density or femoral architecture is suggested.

Keywords: Acetabulum, Aged, Anthropometry, Body weights and measures Femoral neck fractures, Femur
head, Hip fractures

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