Clinical Study

Pain Control after Total Knee Arthroplasty: Comparing Intra-Articular Local Anesthetic Injection with Femoral Nerve Block

Table 1

Comparison of demographic and clinical data between IALA and FNB group.

IALA group ()FNB group () value

Gender (male/female)9/307/480.266
Age (y), mean (SD)68.41 (9.46)70.64 (8.00)0.221
BMI (kg/m2), mean (SD)28.88 (7.12)28.05 (3.88)0.596
ASA physical status0.076
 I3 (7.7)0 (0)
 II16 (41.0)30 (54.5)
 III20 (51.3)25 (45.5)
Comorbidities
 Pulmonary disease (%)0 (0)4 (7.3)0.139
 Cardiovascular disease (%)22 (56.4)38 (69.1)0.267
 Liver disease (%)5 (12.8)12 (21.8)0.293
 Renal disease (%)1 (2.6)0 (0)0.415
 Gastrointestinal disease (%)10 (47.6)47 (85.5)<0.001
Surgical approach
 Medial parapatellar39 (100)55 (100)N.A.
Implanted prosthesis
 Tricompartment39 (100)55 (100)N.A.
Prosthesis manufacturer
 Zimmer39 (100)55 (100)N.A.
Intraoperative (mg)16.28 (3.58)18.19 (4.92)0.037
Intraoperative opioidsBW (mg/kg)0.24 ± 0.050.29 ± 0.080.0018

Categorical data were analyzed using Fisher’s exact test. Continuous data were analyzed using -test.
BMI: body mass index.
BW: body weight.
ASA: American Society Anesthesiologist.
into i.v. equivalent dose of morphine.