Lumbar spinal stenosis (LSS) Cervical spondylotic myelopathy (CSM)
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) The patients who will receive surgery as follows *Microendoscopic laminotomy, or microscopic bilateral decompression via unilateral approach for lumbar spinal stenosis *Laminoplasty for cervical spondylotic myelopathy 2) The patients who were explained and understood well about this survey, in addition, give written informed consent of their own free will.
Exclusion criteria
Exclusion criteria: These patients are excluded 1) Coexisting malignant tumors 2) Pyogenic spondylitis 3) Severe hepatic disorders 4) Severe renal disorders 5) Cardiac conduction abnormalities 6) Allergic history of the ropivacain 7) Lactating women 8) Received ropivacain within 3 months before our injection 9) Received IVH perioperatively 10) Anyone who disqualified by the doctor in charge
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Visual analog scale (VAS) for wound pain at 48 hours after surgery | — |
Secondary
| Measure | Time frame |
|---|---|
| VAS for the wound pain at 4, 12, 24, 36, 72 hours and 7, 14days after surgery. VAS for the back or neck pain at 3 months after surgery. The type and dosage amount of additional pain-killers. Complication. VAS for upper or lower extremity. JOA score, JOABPEQ, JOACMEQ | — |
Countries
Japan
Contacts
Osaka City Graduate school of Medicine Department of Orthopedic Surgery