Traditional Chinese medicine ointment combined with tuina therapy in treatment of pain and swelling after total knee arthroplasty

Table 4 Comparison of lower limb swelling between the two groups

	Group		t	P value
	Treatment, n = 40	Control, n = 40
Upper circumference in cm
-3 d	53.35 ± 4.94	51.83 ± 4.34	1.461	0.148
3 d	52.83 ± 4.91	51.51 ± 4.29	1.274	0.206
7 d	48.32 ± 4.57	50.53 ± 3.97	2.315	0.023
14 d	45.68 ± 4.69	47.96 ± 3.89	2.374	0.020
Lower circumference in cm
-3 d	39.59 ± 3.58	38.16 ± 3.78	1.734	0.087
3 d	38.96 ± 3.55	37.50 ± 3.85	1.768	0.081
7 d	36.71 ± 2.95	39.21 ± 6.86	2.121	0.037
14 d	34.96 ± 2.96	36.70 ± 4.35	2.095	0.039

-3 d: 3 d before the operation; 3 d: 3 d after the operation; 7 d: 7 d after the operation; 14 d: 14 d after the operation.