Intrathecal Prilocaine and Adductor Canal Block vs Intrathecal Bupivacaine Alone for Ambulatory Knee Arthroscopy

Hybrid Anesthesia for Ambulatory Knee Arthroscopy Using Intrathecal Prilocaine and Adductor Canal Block vs Intrathecal Bupivacaine Alone: a Randomized Controlled Trial

- Although bupivacaine is safe and has a low rate of transient neurologic symptoms, the prolonged sensory and motor block is a drawback for day-case spinal anesthesia.Intrathecal hyperbaric prilocaine causes a much shorter motor block, with a similar onset time and lower inter-individual variability in motor block duration. Furthermore, the peripheral nerve block is used as an adjunct to the spinal anesthesia to prolong the surgical anesthetic conditions.

Inclusion Criteria:

• American Society of Anesthesiologists (ASA) score I-II.
• Body mass index < 35 kg/m2

Exclusion Criteria:

• Patient's refusal.
• Known coagulopathy.
• Known peripheral neuropathy or neurological deficits.
• Known allergy to study drugs.