Pain following total knee arthroplasty (TKA) and the methods of approaching it has been a topic of interest for many years. Options for pain management range from administration of non-steroidal anti-inflammatory drugs (NSAIDs), opioids, epidural analgesia, and patient-controlled analgesic modalities to numerous peripheral nerve blocks with or without indwelling catheters [1-3]. Among these, a well-established method is blockade of the femoral nerve (FNB) using long-acting local anaesthetics, which are frequently combined with an indwelling catheter to provide an even more prolonged anaesthetic effect. In parallel, in recent years, the intra-and periarticular administration of local anaesthetics, combined with a variety of other substances such as opioids, NSAIDS, magnesium, and adrenaline