| abstract |
A flexible coupling unit for use in a spinal fixation device includes a longitudinal member having first and second ends; and at least one spacer positioned between the first and second ends, At least one spacer comprising a first portion made from a first material and a second portion made from a second material; and in the longitudinal channel of the at least one spacer; At least one flexible member positioned, wherein the first and second ends substantially limit movement of the at least one spacer relative to the at least one flexible member in the longitudinal direction. One flexible member. |