RecruitingPhase 4Drug trialFemoral Peri-arterial Local Anesthetic Injection Via Peri-arterial Perineural Catheter Reverses Tourniquet Associated Ischemic HypertensionThe goal of this prospective randomized double-blind study is to determine if an ultrasound guided peri-arterial injection of local anesthetic (LA) superomedially the femoral artery via peripheral nerve catheter reverses ischemic hypertension associated with prolonged lower extremity tourniquet time.