What is indicated by a fingerprint pattern described as a "radial loop"?

A fingerprint pattern described as a "radial loop" is characterized by its directional flow, specifically indicating that the loop opens toward the thumb. This classification is essential in fingerprint identification and is based on the anatomy of the hand. The radial loop is defined by its core and the position of its delta, typically presenting a more curved structure that flows toward the radial side of the hand, which aligns with the thumb's location.

Understanding this classification helps forensic experts and law enforcement in the accurate interpretation of fingerprint patterns during investigations. The radial loop contrasts with other patterns, such as the ulnar loop, which opens toward the little finger, providing a definitive orientation that aids in categorizing and comparing fingerprints effectively.