A Prospective Study on the Comparison of Postoperative Pain According to the Use of Cocktail Therapy in Laminoplasty

Inclusion Criteria:

* Diagnosed with cervical myelopathy or radiculopathy and scheduled to undergo laminoplasty
* Recorded preoperative upper limb pain (Visual Analog Scale \[- VAS\] ), neck pain (VAS), Japanese Orthopaedic Association (JOA) scores, and Neck Disability Index (NDI) scores.
* Adults aged 20 years and above, but below 80 years capable of articulating their own pain or functional abnormalities
* Cognitive function at a level that enables them to comprehend and adhere to study procedures

Exclusion Criteria:

* Previous surgical treatment of the cervical spine.
* Adolescents aged 20 years or below, pregnant individuals, or those with the potential for pregnancy.
* Hypersensitivity reactions to mixed medications used in Cocktail therapy. (morphine 5 mg, ropiva 150 mg, tamceton 40 mg, epinephrine 1 mg, ketocin 60 mg, jetiam 1 g).
* Patients who lack the capacity for medical consent or are unable to communicate effectively in a medical context.