A combination spacer insert and support for incorporating into a space defined between succeeding vertebrae. A first insert body is constructed of a composite material exhibiting at least one modulus of elasticity with a substantially cylindrical shape and is inserted within the space, such as established between a pair of previously non-consecutive vertebrae and corresponding to an absent vertebrae. An additional and exterior supported member engages locations associated with the (formerly) non-consecutive vertebrae and which, in combination with the insert body, provides a limited degree of mobility to the vertebrae.