This study shows that the trajectory of gross motor development can be changed in children with a hearing loss after a cochlear implantation. Implanted children show a drop in their gross motor performance within the age range of 6 to 18 months, at which period the majority of the implantations took place, with a tendency of recovery toward the age of 2 years. However, longer follow-up will be necessary to trace whether the implanted children catch up their motor delay in comparison with nonimplanted children with a hearing loss at later age.