Table 2. Appendicular segmental boundary definitions for lower-body analysis using DXA

Segment	Proximal End	Distal End	Regional Description
Thigh	Femoral Head	Tibiofemoral Joint	Commences beneath the head of the Femur along the line of the anterior superior iliac spine (ASIS) and inferior ramus of the pubis; Ending through knee axis, noted by the ‘tibial plateau’ (space between the femoral and tibial condyles).
Shank	Tibiofemoral Joint	Talocrural Joint	Commences through the knee axis (described above); Ending through the ankle junction, noted as the articulation between the Talus, Tibia and Fibula, spanning beneath the medial and lateral malleoli.
Foot	Talocrural Joint	Distal Phalanges	Commences through the ankle junction (described above); Ending at the most distal point of the phalanges of the foot.