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Table 1 The COF shift, Pmax, Pmean and the lateral joint pressure ratio change in response to the series of tibial varus

From: Ankle joint pressure change in varus malalignment of the tibia

 0° varus2° varus4° varus6° varus8° varus10° varus12° varus14° varus16° varus18° varus20° varus
The COF shift
(Medial)
Mean(SD)(mm)0(0)0.33(0.60)2.44(1.08)2.76(1.46)2.76(1.62)0.65(0.98)0.81(0.97)0.33(0.92)−0.65(1.39)− 1.46(1.46)−1.46(1.08)
0° varusp value0.1700.0010.002
8° varusp value0.0480.020.0020.00300.001
The COF shift
(Lateral)
Mean(SD)(mm)0(0)0.33(0.60)0.98(0.92)1.46(0.83)1.79(1.54)1.79(0.67)2.11(1.19)1.63(1.15)0.65(0.69)1.63(1.15)0.65(0.69)
0° varusp value0.170.020.0020.01400.002
12° varusp value0.2850.0260.1970.026
The Pmax
(Medial)
Mean(SD)(kPa)5303.4(1105.1)4973.9(986.0)4883.5(841.7)4939.4(959.7)4751.8(741.5)4708.8(898.2)4710.9(959.7)4615.8(791.3)4464.1(884.4)4268.9(752.2)4432.1(948.6)
0° varusp value0.0320.2190.1790.1480.1480.2090.1020.0810.0390.045
The Pmax
(Lateral)
Mean(SD)(kPa)5135.5(1095.3)4754.7(1205.3)4727.8(694.9)4940.1(804.1)5000.8(761.1)4844.5(756.7)4412.6(581.9)4478.0(238.0)4525.5(525.6)4324.1(866.8)4279.4(666.9)
0° varusp value0.0220.0870.3620.6910.4390.0850.0960.180.130.116
The Pmean
(Medial)
Mean(SD)(kPa)2266.4(672.7)2107.6(654.9)2064.8(632.7)2064.4(624.5)2027.6(632.9)1891.2(563.9)1895.4(499.5)1802.2(481.1)1742.5(314.6)1587.1(453.6)1618.7(421.5)
0° varusp value0.0210.0720.0560.0890.0070.0180.0040.100.0070.006
The Pmean
(Lateral)
Mean(SD)(kPa)2103.8(625.1)2059.7(465.6)2109.3(510.8)2183.7(581.3)2295.3(589.7)2280.7(519.3)2043.6(456.3)2053.0(416.6)1972.1(481.0)1864.5(449.2)1748.9(467.2)
0° varusp value0.5550.9520.4990.047
8° varusp value0.7760.0140.0150.0120.010.002
The lateral joint pressure ratioMean(SD)0.481(0.12)0.499(0.11)0.508(0.11)0.515(0.11)0.531(0.11)0.548(0.11)0.519(0.10)0.534(0.10)0.527(0.09)0.540(0.10)0.517(0.10)
0° varusp value0.110.1220.0880.0110.002
10° varusp value0.0140.1910.0960.4050.002