C - Knee Height
D - Hip Height

C - Linear Distance - While standing and with a relaxed straight leg, measure the distance between the floor and the knee (Lateral Condyle). Repeat the measurement to make sure you get a consistent answer.

D - Linear Distance - While standing and with a relaxed straight leg, measure the distance between the floor and the hip (Greater Trochanter). Repeat the measurement to make sure you get a consistent answer.