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Calcar Femorale

- Discussion:
    - dense vertically oriented bone that originates in posteromedial portion of femoral shaft under lesser trochanter;
           - it radiates laterally toward posterior aspect of greater trochanter;
    - it reinforces the femoral neck posteroinferiorly;
    - calcar femorale fuses w/ posterior aspect of femoral neck superiorly and extends distally anterior to the lesser trochanter and fuses w/ posteromedial aspect of the femoral diaphysis;
    - calcar femorale is thickest medially & thins as it passes laterally;
    - in literature regarding hip arthroplasty, medial cortex of femoral neck has frequently been mistakenly labeled as the calcar