The cobalt chromium rod is better than titanium rod for effective correction of spinal deformity and postoperative stability of the spine.
Cobalt Chrome Alloy is a wear resistant and corrosion resistant high strength material with stiffness similar to stainless steel.
Cobalt Chrome Alloy is more susceptible to cold working than most implant materials. Cold work is introduced during bending of the rod; as a result the tensile strength is increased while ductility is lowered. Repeated bending of the CoCrMo rod is not recommended for this reason.
Strength is the stress at which a material breaks or permanently deforms.
Higher strength means that you have to exert more force while bending the stronger rod. Rod strength may be an issue if a patient loses correction over time. The higher the strength of the rod, the greater the amount of force required to permanently deform or break the rod.
