Calcar Femorale - Wheeless' Textbook of Orthopaedics

- 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;