In the context of medical terminology, what does "infra-" refer to?

The term "infra-" is a prefix derived from Latin, meaning "below" or "beneath." In medical terminology, it is commonly used to describe locations or structures in relation to other anatomical features. For example, "infrapatellar" refers to the area situated below the patella (knee cap). This prefix effectively communicates the position of a particular structure in relation to a reference point, indicating that it is located underneath rather than above or at the same level. Understanding prefixes like "infra-" is essential for accurately interpreting and using medical terminology, especially in anatomy and clinical contexts.