Inclusion Criteria:  American Society of Anesthesia I-III classification, Scheduled for arthroscopic knee surgery (meniscal debridement/repair, ACL reconstruction)  Exclusion Criteria:  Age younger than 18 years Non-English speaking Any contraindication for regional anesthesia, such as allergy to local anesthetics or opioids, -Coagulopaty or severe thrombocytopenia Infection at puncture sites Pre-existing neuropathy in operative limb Need for post-operative nerve function monitoring Dementia Patient refusal High pre-operative opioid requirements