Safety and Analgesic Effectiveness of the (Femoral Rami and Obturator Nerve Truck) FRONT for Hip Surgery: A Prospective Case Series

Over the past decade, regional anesthesia techniques have evolved significantly to better target the sensory innervation of the hip joint while minimizing motor blockade. Among these, the Pericapsular Nerve Group (PENG) block and the Femoral Rami and Obturator Nerve Trunk (FRONT) block have emerged as two distinct strategies aimed at providing effective analgesia for anterior hip procedures. While both blocks share the objective of targeting articular branches innervating the anterior hip .A key theoretical advantage of the FRONT block provides direct and predictable coverage of the obturator nerve, which is a critical contributor to hip joint innervation but is inconsistently reached by the PENG block. Moreover, by clearly defining the fascial planes involved, the FRONT block aims to reduce the variability seen with pericapsular techniques, offering potentially good analgesic effect for hip surgeries .