Erector Spinae Plane Block Versus Intraarticular Injection for Postoperative Analgesia in Shoulder Arthroscopy

"The patient will be placed in the lateral position. Following skin disinfection, counting down from the C7 spinous process and using ultrasound guidance, the level of T2 transverse process will be identified. A 2-5 MH2 curved array transducer (sono site Edge, Bothell, Will behington) will be positioned transversely to visualize the lateral tip of T2 transverse Process. A longitudinal parasagittal orientation will be obtained over the transverse process using a 22 - gauge 8 cm block needle (visioplex, Vygon , France) will be inserted in plane to US beam in a caudal to cranial direction to place the needle tip between the posterior fascia of the erector spinae muscle and the T2 transverse process.~Position of the needle tip in the ESP deep to the erector spinae muscle will be confirmed using hydrodissection with 0.5 - 1 ml of normal saline and visualization of the linear fluid spread deep to the erector spinae muscle following which 20 ml of 0.25% bupivacaine will be injected."

Intraarticular injection of local anesthetic through the surgical port