1. Introduction:
Arthroscopic knee surgery methods are frequently preferred treatment
procedures and this is because they are minimally invasive and therefore
provide early recovery (1).
As in many surgical branches, the number and variety of minimally
invasive / arthroscopic interventions in knee surgery are increasing
with technological progress, as an indirect result of this, enhanced
recovery after surgery stands out as an issue that needs to be seriously
addressed for anesthetists and surgeons
(2–4). With the
increase in ultrasound technology and availability; regional anesthesia
techniques are used and encouraged as part of multimodal analgesia in
many surgical procedures
(5,6).
The use of adductor canal block (ACB) as a part of multimodal analgesia
in arthroscopic knee surgeries is an increasingly common practice due to
the prediction that it may cause lower quadriceps weakness compared to
femoral nerve block in arthroscopic knee surgeries and the claim that it
can provide similar effects with lower volume
(7–9).
Considering the clinical studies and case series in the literature, it
is seen that the drug concentration is 0.25% or above in almost all of
the single shot ACB applications under ultrasound guidance (in those
using bupivacaine)
(7,10–13).
In this study, in patients undergoing arthroscopic minimally invasive
knee surgeries; We aimed to evaluate the effects of ACB on the intensity
of pain measured at different time points in the postoperative period
and the need for analgesia in the first 24 hours, by comparing the
effectiveness of fixed volume with two different concentrations of local
anesthetics between the control group and themselves.