Table 3.

Statistical analyses of cytotoxicity data. Mean differences of cytotoxicity effects between P2 (0.5 mg/mL) vs. P3 (0.5 mg/mL) and P3 (2 mg/mL) vs. P6 (2 mg/mL) were studied with Student’s t tests (α = 0.05), respectively. (a) Wear particles obtained in PBS (P2) and in PBS containing 3 g/L HA (P3). (b) Wear particles obtained in PBS containing 3 g/L HA (P3) and in PBS containing 3 g/L HA with polarization application (P6).

(a)
P2 (0.5 mg/mL) vs. P3 (0.5 mg/mL)
Mean of P2	Mean of P3	P Value
57.84	12.24	0.015
(b)
P3 (2 mg/mL) vs. P6 (2 mg/mL)
Mean of P3 (2 mg/mL)	Mean of P6 (2 mg/mL)	P Value
46.18	23.9	0.248