Alluni-Perret developed a simple discriminant function for determining the gender of skeletal remains from adult French Caucasians based on the epicondylar breadth of the femur. The authors are from the Laboratoire de Medecine Legale et Anthropologie Medico-Legale and the Universite de Nice in Nice, France.


Patient selection: adult French Caucasians


Measurements were taken using a metal caliper. The bicondylar width is the maximum width of the distal femur with both epicondyli touching the ruler of the measuring caliper. The inside of one caliper arm encompasses the outer surface of the lateral condyle while the other is on the other surface of the medial condyle.


The epicondylar breadth is greater for males than females. In general a measurement >= 80 mm indicates male gender and a measurement <= 75 mm indicates female gender.


Measurements from the left and right sides are comparable.



(1) average of 3 measurements of the epicondylar breadth in mm


discriminant function for gender =

= (0.97894 * (epicondylar breadth)) - 77.96854



• A discriminant function > 0 indicates male gender.

• A discriminant function < 0 indicates female gender.



• The score was accurate in 95% of the study subjects.


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