2.1. Study design
Local ethics committee approval (SBKEAH-KAEK: 2017/514/118/18) was
obtained for this prospective, feasibility, randomized and single-blind
study. Our study was designed and conducted in accordance with the
ethical principles specified in the Helsinki Declaration. Patients were
admitted to the study between 02.01.2018 and 01.07.2018. Written
informed consent was obtained from all patients.
ASA I and II patients aged 18-60 years, scheduled for arthroscopic knee
surgery (meniscectomy, synovectomy, and ACL repair), were included in
the study. Our exclusion criteria were ASA III and above, chronic opioid
or steroidal agent use, bleeding-coagulation disorder, diagnosis of
neuropsychiatric disease that would affect the perception of pain, and
regular use of antipsychotic-antidepressants or gabapentinoid. It was
planned to be excluded from the study if the duration of the surgery was
<60 minutes or> 180 minutes.