Table 4.

Mean values of joint tenderness in both groups throughout the study intervals.

	Mean ± standard deviation		“t”	Probability
	Hard	Soft
Preoperative	2.39 ± 0.61	2.47 ± 0.57	0.466	0.322
1 M	2.00 ± 0.43	2.03 ± 0.54	0.222	0.413
2 M	1.72 ± 0.46	1.63 ± 0.66	0.553	0.292
3 M	1.44 ± 0.51	1.28 ± 0.46	1.162	0.126
4 M	1.06 ± 0.24	1.00 ± 0.00	1.344	0.093
F value	23.095	43.661
Probability	6.11E-13	1.68E-24
LSD	0.301	0.251