Coxa vara Coxa vara includes all forms of decrease of the femoral neck shaft angle (the angle between the neck and the shaft of the femur) to less than 120 degrees. HP:0002812 The Latin word 'coxa' refers to the hip, and varus is a term for the inward angulation of the distal segment of a bone or joint. The normal range of the angle between the ball and the shaft of the femur is 120 to 135 degrees. Coxa vara can be congenital, developmental, or acquired. UMLS:C0239138 SNOMEDCT_US:74820003 Abnormality of the lower limb Abnormal skeletal morphology