What is the normal angle of the femoral neck?

The normal angle of the femoral neck, which is also known as the neck-shaft angle, typically ranges from 120 to 135 degrees in adults, with 125 degrees often cited as a standard reference point. This angle is crucial as it reflects the orientation of the femur and plays a significant role in hip function and biomechanics. An appropriate angle allows for optimal load distribution during weight-bearing activities, affecting stability and mobility.

Deviations from this normal angle can influence how forces are transmitted through the hip joint and may contribute to various hip disorders. For instance, a reduced angle (coxa vara) might predispose a person to certain types of fractures or impaired mobility, while an increased angle (coxa valga) can lead to joint instability or hip osteoarthritis.

Understanding the normal anatomical angles is essential in assessments related to bone health, particularly in evaluating conditions like osteoporosis or when planning surgical interventions involving the hip joint.