scapula
spine is posterior, long edge is medial
humerus
groove is anterior, look which way the smooth rounded head is facing
os coxa
acetabulum is anterior
femur
lesser trochanter in the back, ball should be medial
patella
face apex away from you, whatever side it lands on is the R or L
tibia
tibial tuberosity at the top front, look for medial malleolus