In transtibial prosthetic alignment, what is the term for the relationship between the posterior socket shelf and the lateral wall?

In transtibial prosthetic alignment, the relationship between the posterior socket shelf and the lateral wall is referred to as the adduction angle. This angle is crucial because it affects the stability and overall function of the prosthesis.

When the adduction angle is properly aligned, it helps in achieving better weight distribution and lateral stability of the prosthesis during ambulation. A well-aligned adduction angle allows the patient to maintain a more natural gait pattern and minimizes the risk of lateral instability or falls.

On the other hand, the other terms such as abduction angle, flexion angle, and extension angle refer to different aspects of socket alignment or limb positioning and do not specifically describe the relationship between the posterior socket shelf and the lateral wall in a transtibial prosthetic fitting. Thus, understanding the significance of the adduction angle is essential for optimal prosthetic performance.