Chronic Pain Clinical Trial
Official title:
PeRiOperative VItamin C to Reduce perSistent paIn After tOtal kNee Arthroplasty (PROVISION): a Pilot Multicentre Randomized Controlled Trial
Phase II Multicentre, pilot, parallel-group, blinded, 1:1 randomized controlled trial to determine the feasibility of conducting a larger definitive trail of using vitamin C to reduce persistent pain in patients undergoing total knee arthroplasty surgery.
PROVISION is a multicentre, pilot, parallel-group, blinded, randomized controlled trial of 100 patients undergoing total knee arthroplasty surgery. Consented eligible patients will be randomized to receive vitamin C: 2000 mg taken orally within 4 hours of the start of surgery, followed by 500 mg of vitamin C taken twice daily from post-operative day 1 to day 56 (8 weeks). Patient in the control group will receive placebo lactose monohydrate capsules. Study medications will be prepared to look similar and labelled as per regulatory requirements. Patients will follow up on post-operative days 1-3, weeks 2,4,6, and 8 post-operatively, and at 3- and 12-months post-operatively to report on pain, opioid and analgesic consumption, medication adherence, adverse events, functional, mood, and quality of life outcomes. ;
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