Table 2.

Definition and clinical relevance of the stent characteristics analyzed

	Definition	Clinical relevance
Radial resistive force	The ability of a stent to resist radial compression	High: Maintains lumen patency in concentric strictures
Chronic outward force	The continuous outwards radial force exerted by a stent	High: Ensures apposition in concentric strictures and reduces stent migration
Crush resistance	The ability of a stent to resist unidirectional compression	High: Maintains lumen patency in eccentric strictures
Axial force	The reactive force exerted by a stent when it is bent axially	Low: Prevents straightening or kinking in tortuous strictures
Conformability	The ability of a stent to maintain lumen patent when it is bent axially	High: Maintains lumen patency in tortuous strictures
Surface quality	The physical smoothness of a stent’s surface	Good: Reduces corrosion, bacterial adherence, and biofilm formation
Foreshortening	The change in length of a stent as it is compressed radially	None: Facilitates accurate placement of the stent
Radiopacity	The extent to which a stent is visible under fluoroscopy	Good: Facilitates accurate placement of the stent