Effectiveness of Ultrasound-Guided Canal Adductor Blockade for Chronic Pain and Functioning in Knee Osteoarthritis: A Prospective Longitudinal Observational Study

Table 5

Knee Injury and Osteoarthritis Outcome Scores at baseline and 1 month after adductor canal blockade and their differences with estimated adjusted effect sizes.

KOOS	Assessment time	Mean (SD),	Effect size^+	95% CI	value
Pain	B/L	36.40 (14.43), 75
	1 M	58.34 (18.86), 73	21.90	17.96–25.84	<0.001
Symptoms	B/L	52.55 (18.14), 75
	1 M	64.32 (18.28), 74	11.78	7.85–15.70	<0.001
ADLs	B/L	36.36 (15.96), 75
	1 M	60.77 (19.47), 74	24.39	19.91–28.87	<0.001
QoL	B/L	17.87 (11.80), 75
	1 M	30.97 (20.25), 73	13.13	8.64–17.62	<0.001

KOOS: Knee Injury and Osteoarthritis Outcome Score; ADLs: activities of daily living subscale; QoL: quality of life subscale. The sports/recreation subscale was not administered; B/L: baseline; 1 M: 1 month after adductor canal blockade; ⁺age-, gender-, and BMI-adjusted effect size, as estimated by the linear mixed effects model.