Effect of Combining Peri-hamstring Injection or Anterior Obturator Nerve Block on the Analgesic Efficacy of Adductor Canal Block for Arthroscopic Anterior Cruciate Ligament Reconstruction Under General Anesthesia

"group C will receive a unilateral adductor canal block alone, using an ultrasound to identify the location of the nerve.~group H will receive unilateral peri-hamstring injection combined to adductor canal block, After the adductor canal block, the transducer will be moved posteriorly till identifying the site of injection group O will receive unilateral anterior obturator nerve block combined with adductor canal block, The anterior branch of the obturator nerve is located using ultrasound"