Electrophysiological and pathological changes in the vastus medialis and vastus lateralis muscles after early patellar reduction and nerve growth factor injection in rabbits with patellar dislocation

Table 1 Comparison among the four groups regarding the latency period and amplitude of EMG at different detection times

Index	Group 1		Group 2		Group 3		Group 4
Index	Latency period (ms)	Amplitude (mV)	Latency period (ms)	Amplitude (mV)	Latency period (ms)	Amplitude (mV)	Latency period (ms)	Amplitude (mV)
1 month
VM	1.15 ± 0.07^αβ	12.23 ± 2.12^αβγ	1.30 ± 0.17^βγ	10.50 ± 1.13^βγ	1.52 ± 0.13^γ	8.12 ± 0.95^γ	1.04 ± 0.12	15.21 ± 1.47
VL	1.24 ± 0.15^αβ	14.89 ± 1.19^αβγδ	1.32 ± 0.14^βγ	12.99 ± 1.29^βγ	1.46 ± 0.09^γδ	9.12 ± 0.30^γδ	1.07 ± 0.12	16.18 ± 1.45
3 months
VM	1.05 ± 0.16^αβ	14.33 ± 1.94^αβ	1.24 ± 0.18^βγ	11.35 ± 0.88^βγ	1.62 ± 0.14^γ	7.12 ± 1.33^γ	0.91 ± 0.12	15.41 ± 1.44
VL	1.11 ± 0.91^αβ	16.29 ± 1.17^αβ	1.31 ± 0.21^βγ	13.88 ± 1.24^βγ	1.58 ± 0.94^γ	8.22 ± 0.36^γ	0.94 ± 0.16	17.23 ± 1.31

α P < 0.05 versus Group 2 in the same month; β P < 0.05 versus Group 3 in the same month; γ P < 0.05 versus Group 4 in the same month; δ P < 0.05 versus 3 months in the same group

ISSN: 1749-799X