Randomized controlled trial of compressive cryotherapy versus standard cryotherapy after total knee arthroplasty: pain, swelling, range of motion and functional recovery

Table 4 P values for the SC vs. CC comparisons at rehab D1 (baseline) and D21

Parameter	D1 SC vs. CC	D21 SC vs. CC
Parameter	P value	P value
Passive flexion (°)	0.921	0.186
AEL (°)	0.743	0.308
Circumference at base of patella (cm)	0.041*	0.910
Circumference + 15 cm from base of patella (cm)	0.196	0.612
Circumference − 20 cm from base of patella (cm)	0.044*	0.446
Joint effusion (1=+, 2=++, 3=+++)	0.745	0.002*
Pain at rest (VNRS)	0.549	0.252
Pain during activity (VNRS)	0.756	0.005*
6MWT (m)	0.768	0.018*
KOOS (/68)	0.768	0.004*

In this table, column D1 corresponds to the comparison of SC versus CC for each data measured at D1. Column D21 corresponds to the comparison of SC versus CC for each data measured at D21. Only P values are noted here SC: Standard Cryotherapy; CC: Compressive Cryotherapy; AEL = Active Extension Lag; VNRS = verbal numeric rating scale; 6MWT = 6-minute walk test; KOOS = Knee injury and Osteoarthritis Outcome Score; * = significant difference between SC and CC; cm = centimeters; m = meters; D = Day. Statistical test: Wilcoxon.

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