How Do You Know If Your Femurs Are "Long"?

I’ll ignore all the value statements and repost this just to help answer the question

Tibia/Femur ratio

Short tibia = 75-78% of femur (or less)
Average tibia = 79-84% of femur
Long tibia = 85%+ of femur

Source: CT

Presumably you can infer if your femurs are long if your tibias are short