Table 1.

Mechanical properties of 3 main groups of spinal implants in adolescent idiopathic scoliosis surgery [22]

Biomaterial	Elastic modulus (Young’s modulus) (Gpa)	Yield strength (MPa)	Fatigue strength (MPa)
CoCr alloys	200–300	300–2,000	207–950
Titanium alloys	110–116	485–1,034	300–389
Stainless steel	190	792	241–820

CoCr, cobalt chromium.