Outcome measurements
poisoning, paralysis, hypoxemia, pain, hematoma
HEMATOMA, CONTRACTION, COMPLICATIONS
This study evaluates the effect of the femoral nerve and lateral femoral cutaneous nerve to determine whether S-FICB is effective. Measurements of supra-inguinal fascia iliaca compartment blockade were carried out every 5 min until 30 min by a single, blinded observer. The sensation of pinprick reflects the effect of S-FICB. Sensory blockade of the FN was assessed on the anterior thigh; that of the LFCN was assessed on the lateral thigh. Compared with that before the S-FICB, it was grade 0 if the pain was no change, grade 1 if the pain decreased, and grade 2 if the pain disappeared completely. 30 min after the injection, the sensory blockade of the above two nerves reached grade 2, which can be judged that the block is successful. Otherwise, the block failed.The muscle strength of the quadriceps femoris was measured and recorded before S-FICB and 30 min after S-FICB. The muscle strength of the quadriceps femoris was measured by the unarmed muscle strength classification method. Level 0: complete paralysis; Level 1: weak muscle contraction, but cannot cause joint contraction; Level 2: cannot resist gravity, can complete the movement of the whole joint; Level 3: can resist gravity but not resistance, can complete the movement of the whole joint; Level 4: can resist gravity and weak resistance, can complete the movement of the whole joint; Level 5: can resist gravity and strong resistance, can complete the movement of the whole joint. The complications such as puncture site bleeding, hematoma, local anesthetic poisoning, puncture needle into blood vessels, and hypoxemia were recorded.