TIPS Block vs. IV Analgesia for Postoperative Pain After Knee Arthroscopy

Inclusion Criteria: .Age 18-40 years undergoing knee arthroscopy. .Sex: Both sexes. .American Society of Anaesthesiologists (ASA) Physical Status Class I and II Exclusion Criteria: .Declining to give written informed consent. .History of allergy to the medications used in the study. .Contraindications to regional anesthesia (including patient refusal, coagulopathy and local infection). Psychiatric disorder. .American Society of Anesthesiologists (ASA) Physical Status Class III and IV. * Patients with body mass index (BMI) \>35 kg/m2 .Neurological deficits or mobility-related disorders of the non-operated limb . * Moderate to severe hepatic , renal diseases and cardiac disease.