Table 1.

Commercially available PEEK-based materials and products used in the included studies

Material	Commercial name	Manufacturer	Reference
Unfilled PEEK	PEEK-Optima LT1	Invibio Ltd, Thornton-Cleveleys, UK	[6] [13] [14]
CRF-PEEK (Pan)	CFR-PEEK LT1 CA 30	Invibio Ltd	[44] [13] [14]
CRF-PEEK (Pitch)	ABG II Hip System CFR-PEEK LT1 CP 30	Stryker SA, Montreux, CH Invibio Ltd	[35] [26] [44]

CRF-PEEK (Pan) = PEEK containing 30% polyacrylonitrile based carbon fibers; CRF-PEEK (Pitch) = PEEK with a carbon fiber reinforcement of 30% pitch fibers; PEEK = polyetheretherketone.