INTRODUCTION
More than two-thirds of people living with transfemoral
amputation report that problems with the fit of their
prosthetic socket cause discomfort, impair mobility, and
restrict participation in everyday activities [1–3].
Accurate measurement of the transfemoral residuum
and pelvis is critical for a well-fitting and comfortable
ischial containment socket. One of the most important measurements
is the “Skeletal Medial-Lateral (ML)” because it
defines the ML dimension of the socket brim that intimately
encapsulates the pelvis and provides the necessary
coronal plane stability to the remnant femur and pelvis that
enables comfortable and effective gait [4–8]. Specifically,
the Skeletal ML describes the coronal plane distance