In counterpart, children balance disorders are often unknown and underestimated. However, they clinically lead to an evident handicap in case of acute or chronic otitis media (Caselbrant et al. 1995). Balance control involves three sensory systems tightly linked: vision, vestibule, and somesthesia. From the links between vision and vestibule originate the visio-vestibular and vestibulo-ocular reflexes (VVOR,VOR). Dynamic Posturography (DP) is a technology able to measure each of these sensory inputs involved in balance control by recording sensory organization test (SOT). This technology is available for adults for a few decades but are poorly used in children (Wiener-Vacher et al. 1996, 1998, Casselbrant et al 1995, 2005).