Fascia Iliaca Versus Quadratus Lumborum Block for Pain Management in Total Hip Replacement.

Ultrasound guided fascia iliaca block done by palpation of anterior superior iliac spine to identify the inguinal crease, then place the ultrasound probe on it to identify the sartorius muscle. Sonographic anatomy will be identified, from superficial to deep, consisting of subcutaneous fat, the internal oblique muscle, the transverse abdominis muscle, the fascia iliaca covering the iliacus muscle and the iliacus muscle itself. The block needle will be advanced in out-of plane to puncture the fascia iliaca. With the needle tip just below the fascia iliaca, 2 ml of a local anesthetic will be injected to confirm the tip location. Once the proper position is confirmed, 40 ml of bupivacaine 0.25% will be injected superficial to the iliacus muscle and deep to the fascia iliaca.

The patients will receive anterior ultrasound guided quadratus lumborum block QLB in the lateral position. The transducer will be first placed in a parasagittal orientation 3-4 cm lateral to the midline and over the sacrum to identify the L5 transverse process. The probe will then rotated into a transverse orientation with slight medial and caudal angulation to obtain a transverse oblique view at L5 transverse process .The ultrasound probe will be tilted , so the lateral end of the probe will be more cranial than the medial side of the probe to avoid the acoustic shadow of the iliac crest. Identify the quadratus lumborum and psoas major and inject the local anesthetic above the QL