ROCKet: Reduction Of Chronic post-surgical pain with Ketamine

The Reduction Of Chronic post-surgical pain with Ketamine (ROCKet) trial is a five-year, 4884 patient, multicentre, double-blind, placebo controlled, phase 3/4 randomised controlled trial of the effect of up to 72 hours of perioperative ketamine on the risk of development of chronic post-surgical pain.

Principal investigator: Professor Philip Peyton at the University of Melbourne and Austin Health.

A research coordinator discusses a document with an elderly patient in a clinical office setting, with medical charts and a computer in the background.

The ROCKet trial launched on 19 December, 2017, with the randomisation of the first patient at Austin Health. The ROCKet trial has now successfully touched down on 5 March, 2025, at Prince of Wales Hospital in Hong Kong. Throughout our journey, we’ve faced numerous challenges, and we could not have reached the destination without the dedication and hard work of all our sites and collaborators. Thank you for your commitment. The team will be reaching out soon regarding data and query completion. In the meantime, we kindly ask that you finalise data entry in the database, to enable us to meet our deadlines for data analysis, presentation and publication throughout 2025.

Study hypotheses
That intravenous ketamine given prior to and following surgical incision for up to three days reduces the incidence of chronic post-surgical pain at three months.

Study size
4884 patients.

Study design
Large, multicentre, randomised, double blind trial.

Primary outcome
Chronic post-surgical pain at three months.

Study population
Elective abdominal surgery involving a skin incision at least 8 cm in length, including open inguinal herniorraphy, non-cardiac thoracic surgery, including mastectomy, breast reconstruction surgery and VATS, and major orthopaedic surgery (hip, knee and shoulder arthroplasty and spinal surgery).

Study duration
Five years.

Main study
The Australian National Health and Medical Research Council 2017
A$4,823,395

The Australian National Health and Medical Research Council 2023
A$967027

Pilot study
Reduction Of Chronic Post-surgical Pain with Ketamine - A pilot study 
A$5000 ANZCA Pilot grant 2013
A$47618 ANZCA Project grant 2014

Biomarker determinants of ketamine response status in the ROCKet trial
ANZCA Project Grant 2020
A$63,000 

Long term follow up study of chronic post-surgical pain in the ROCKet Trial
ANZCA Project Grant 2023
A$70,000

Biomarker determinants of ketamine response status in the ROCKet trial
Principal investigator: Professor Philip Peyton

Delirium sub-study
Principal investigator: Associate Professor Lis Evered

Australian New Zealand Clinical Trials Registry registration number: ACTRN12617001619336.

$A650 (estimate)

Australian Hospitals
Alfred Hospital
Austin Health
Box Hill Hospital - Eastern Health
Dandenong Hospital
Fiona Stanley Hospital
Frankston Hospital
Goulburn Valley Health
Grampians Health Ballarat (previously Ballarat Health Services)
Logan Hospital
Lyell McEwin Hospital
Mackay Base Hospital
Maroondah Hospital - Eastern Health
Monash Medical Centre
Moorabbin Hospital
Nepean Hospital
Northern Health
Peter MacCallum Cancer Centre
Princess Alexandra Hospital
Redcliffe Hospital
Rockhampton Hospital
Royal Adelaide Hospital
Royal Darwin Hospital
Royal Melbourne Hospital
Royal Perth Hospital
Royal Prince Alfred Hospital
Sir Charles Gairdner Hospital
St John of God Hospital (Subiaco)
St Vincents Hospital, Melbourne
The Tweed Hospital
University Hospital Geelong - Barwon Health
Westmead Hospital
Wollongong Hospital
New Zealand and Hong Kong
Middlemore Hospital, NZ
Manukau Surgery Centre, NZ
Prince of Wales Hospital, Hong Kong

For further information about ROCKet and the sub-studies, please contact the ROCKet Project Manager, Sofia Sidiropoulos by email.