A rod assembly for spinal stabilization is provided comprisinga flexible tubular element (2,2) having a first end section (2a) and a second end section (2b),an adapter (5) connected to the second end section (2b), the adapter (5) having an engagement structure (10,6) for connection to other rod portions or other rod assemblies of a spinal stabilization device,wherein at least a portion (5a) of the adapter (5) extends into the second end section (2b),a longitudinal core (8) extending through the tubular element,the core having a first end extending through at least a portion of the first end section (2a)and a second end (9) extending into the portion (5a) of the adapter and being freely movable therein.
