Intrathecal Morphine for Unilateral Total Knee Arthroplasty
Conditions
- Primary Osteoarthritis of Knee Nos
Interventions
- PROCEDURE: 50 ug IT morphine
- PROCEDURE: 100 ug IT morphine
- PROCEDURE: No IT morphine
- DRUG: Morphine
- DRUG: Bupivacaine
Sponsor
Mahidol University