Results
muscle weakness, hematoma, toxicity, pain, block-related
HEMATOMA, COMPLICATIONS, MUSCLE WEAKNESS
We enrolled 78 patients, 10 were excluded and 68 completed the study. The final data analysis was performed on 68 patients, 34 in TFB group and 34 in QLB group (Fig. 
CONSORT Flowchart
The patient’s demographic data, block time, and duration of anesthesia and surgeryData are expressed as median (Q1-Q3), number (n), mean ± SD (standard deviation)*P < 0.05 indicates statistical significanceThe postoperative analgesic profiles are presented in Table 
The number of patients required rescue analgesia, the time of first analgesic request, 12 h postoperative paracetamol consumption for patients who required rescue analgesia and parents’ satisfaction scoreData are expressed as number (n, %), mean ± SD (standard deviation), median (Q1-Q3).The median (IQR, [Q1- Q3]) time needed to performs the block (min) was significantly longer (p < 0.001) in the QLB group (5[
The postoperative FLACC pain scoreData are expressed as median (Q1- Q3)There is no difference regarding the heart rate and mean arterial blood pressure values at the time points that the values were recorded. (P > 0.005). (Table 
Intraoperative heart rate (HR) (beat/min) and mean arterial pressure (MAP) (mmhg)Baseline

117 ± 859 ± 6117 ± 759 ± 60.7660.954-3.33, 4.51-2.94, 3.11Skin incision

124 ± 962 ± 2122 ± 762 ± 30.5040.950-2.84, 5.72-3.84, 3.60Sac traction

121 ± 1157 ± 9119 ± 957 ± 20.5570.653-3.64, 6.70-2.01, 3.18End of surgery

118 ± 1157 ± 6117 ± 956 ± 40.6950.229-4.19, 6.25-1.07, 4.43Data are expressed as mean ± SD (standard deviation)None of the patients who were included in this study required opioid for postoperative analgesia. The block-related complications (were local hematoma, local anesthetic toxicity or muscle weakness of lower limbs) were not reported in any patient who were included in the study.