Comparison of the postoperative analgesic effect for infiltration between the popliteal artery and the capsule of the posterior knee and that of periarticular multimodal drug injection in total knee arthroplasty: retrospective study in the immediate postoperative period

Table 1 Demographic and preoperative patient data

Characteristic	IPACK group	PMDI group	P value
Number of patients	50	50
Gender (male/female)	2/48	0/50	0.516^a
Age (years)	69.3 ± 7.5	71.4 ± 6.5	0.118^b
Height (cm)	152.5 ± 6.5	153.1 ± 5.8	0.588^b
Body mass index (kg/m²)	25.4 ± 3.1	25.3 ± 2.8	0.954^b
Preoperative NRS	7.4 ± 2.3	7.3 ± 3.5	0.138^b
Preoperative KSS^b	52.6 ± 5.0	54.9 ± 6.5	0.093^b
Preoperative knee flexion (°)	126.2 ± 5.7	127.1 ± 6.1	0.729^b
Hypertension (%)	28/50 (56)	24/50 (48)	0.141^a
Diabetes (%)	15/50 (30)	18/50 (36)	0.474^a

Values are presented as mean ± standard deviation
IPACK infiltration between the popliteal artery and the capsule of the knee, KSS Knee Society Score, NRS numerical rating scale, PMDI periarticular multimodal drug injection
^aChi-square test; ^bindependent-samples t test

ISSN: 2234-2451