Efficacy of Periarticular Infiltration with Dexamethasone and Bupivacaine plus Adductor Canal Block Relative to That of Adductor Canal Block Alone for Patients Undergoing Total Knee Arthroplasty: A Retrospective Case-Matched Study

Table 2

Median postoperative pain score.

Time	Group 1 (ACB alone) N = 33	Group 2 (ACB + PI)N = 33	P value
8 hours	3 (0.5–4)	0 (0–3.5)	0.033
16 hours	2 (0–3)	0 (0–2)	0.004
24 hours	2 (0–3.5)	0 (0–2)	0.038
36 hours	1 (0–3)	0 (0–1)	0.084
48 hours	1 (0–3)	0 (0–2)	0.049
72 hours	0 (0–0.5)	0 (0)	0.406