We describe the right femur of an adult male from grave 4141 of the Pontecagnano Necropolis (Salerno, IV century BC).The cortical surface of the bone is raised around a bronze mass visible on the bone surface at the level of the lesser trochanter at the central area of the anterior surface of the femoral shaft.Around the mass there is new bone, which presents some microscopic evidence of inflammation.X-ray analysis reveals that the mass, which measures 2 cm in length, is the cone shaped posterior part of a javelin tip, directed upwards, and with the tip folded.Therefore, it appears that the javelin entered near the inguinal plica and struck the anterior surface of the femoral neck from below.This injury could have occurred if the aggressor struck the victim, who was likely on horseback, from below.The roentgenograms also show a well developed reactive bone around the bronze projectile.Both the macroscopic aspects of the injury and its radiographic picture indicate that the victim survived for a considerable time following his unusual injury.