Table 1.

Overview of PLIF cage specifications used in the study. PEEK cages with 2 coatings were tested: Ti nanocoating and CaP nanocoating. Uncoated PEEK cages were used as control group.

	Uncoated	Ti Nanocoating	CaP Nanocoating
Size (L × W × H), mm	25 × 11 × 10	25 × 11 × 10	25 × 11 × 10
Angulation, °	4	4	4
Coating material	None	Ti	CaP
Coating thickness, nm	NA	± 270	< 100
Coating method	NA	Sputter coating	Dip coating
Manufacturer	Orthobion GmbH
Commercial name	reCreo	TSC	osteoCon

Abbreviations: CaP, calcium phosphate; NA, not available; PEEK, polyetheretherketone; PLIF, posterior lumbar interbody fusion; Ti, titanium.