Table 1.

Plate length and screws of the four locked plating systems

Group	POLYAX	LCP	AxSOS	PERI-LOC
Manufacturer	DePuy (Leeds, UK)	Synthes (Bettlach, Switzerland)	Stryker (Selzach, Switzerland)	Smith & Nephew (Memphis, TN, USA)
Material	Titanium alloy	Titanium alloy	Stainless steel	Stainless steel
Implant system	Distal femoral locked plate system 9-hole Locked cannulated screw FT, 8 × 65 mm Locked cortical screw FT, 4.5 mm × 4.5 mm Polyaxial screw FT, 5.5 mm × 65 mm	Distal femur 9-hole Locked screw 5 × 40 mm Locked screw 5 × 60 mm	Distal lateral femur 10-hole Locked screw 5 × 40 mm + insert Locked screw 5 × 60 mm	Distal femur locking plate 10-hole Locked screw 4.5 × 40 mm Locked screw 4.5 × 60 mm