NCT06088602

Brief Summary

Cryoneurolysis is a regional anaesthetic technique that works by freezing peripheral sensory nerves. This technique can potentially provide analgesia after total knee arthroplasty (TKA). However, the technique is expensive and comprehensive. Pain 24 hours after surgery is associated with high amounts of late acute pain. Therefore, the aim of the current study was to compare the effect of postoperative cryoanalgesia with a sham treatment on acute postoperative pain in TKA patients with moderate to severe pain on the first postoperative day. The cryoanalgesia treatment will be performed 24 hours after surgery. Afterward, the patients will be followed for 24 weeks to determine the level of pain among other outcomes.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
44

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Mar 2024

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

October 6, 2023

Completed
12 days until next milestone

First Posted

Study publicly available on registry

October 18, 2023

Completed
5 months until next milestone

Study Start

First participant enrolled

March 19, 2024

Completed
1.2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2025

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2025

Completed
Last Updated

July 16, 2024

Status Verified

July 1, 2024

Enrollment Period

1.2 years

First QC Date

October 6, 2023

Last Update Submit

July 12, 2024

Conditions

Keywords

CryoanalgesiaAcute postoperative painTotal knee arthroplasty

Outcome Measures

Primary Outcomes (1)

  • Cumulated pain during walking days 2-7

    Cumulated pain (VAS 0-100 mm) upon ambulation in a 5-meter walk test on days 2-7 postoperatively after surgery.

    Days 2-7 after surgery

Secondary Outcomes (13)

  • Pain at follow-ups

    2-24 weeks after surgery

  • Pain relief after block

    24 hours after surgery

  • Cumulated pain during rest and night days 2-7

    Days 2-7 after surgery

  • Quality of sleep

    Days 2-7 after surgery

  • Dizziness

    Days 2-7 after surgery

  • +8 more secondary outcomes

Study Arms (2)

Cryo-group

EXPERIMENTAL

Postoperative cryoneurolysis of the superficial genicular nerves, i.e., the infrapatellar branches of the saphenous nerve (ISN) and the anterior femoral cutaneous nerve (AFCN).

Procedure: Cryoneurolysis

Sham-group

SHAM COMPARATOR

Postoperative sham cryoneurolysis of the lower extremity.

Procedure: Sham

Interventions

Local anesthesia is injected in the skin. The superficial genicular nerves, more specifically the ISN and the AFCN, are visualized. A nerve stimulator is used to verify the visualized nerves., 2-3 ml of ropivacaine 5 mg/ml is injected around the nerves. After 5-15 minutes the effect is evaluated by assessing pain in the surgical area and asking the patient whether there is a pain relief. Following this evaluation, cryoneurolysis (Cryo-S, Metrum Cryoflex, Blizne Laszczynskiego, Poland) is performed unilaterally along a treatment line, the location of which was guided by visualization and palpation of anatomic landmarks. The ISN treatment line is located along the line that connects a point located 5 cm medial to the lower pole of the patella and a point located 5 cm medial to the tibial tubercle. The AFCN treatment line is located at one-third the length of the distance from the center of the patella to the top of the femur, with a width equal to the width of the patella.

Cryo-group
ShamPROCEDURE

The exact same procedure as in the cryo-group is performed, except that the nerves are not frozen with the cryoneurolysis apparatus. Sound effects from the machine are replicated to give the patient the same experience as in the active intervention group.

Sham-group

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥ 18
  • Primary unilateral total knee arthroplasty
  • Ability to participate in the study (understand written and spoken Danish language, self-reported pain and satisfaction)
  • Signed written informed consent form
  • Pain (VAS 0-100 mm) ≥ 45 during a 5-meter walk test at 24 h (20-28h) postoperatively

You may not qualify if:

  • Ongoing treatment of systemic glucocorticoids or other immunosuppressant treatment apart from inhaled steroids
  • Insulin-dependent diabetes
  • Pregnancy or breastfeeding
  • Mental disability that could impair a patient's decision-making capability of giving informed consent and not enabling valid data collection.
  • Patients with known diagnoses of schizophrenia, ongoing psychosis, bipolar disease and/or a history of ongoing anti-psychotic treatment.
  • Patients with modulated pain-reception (experience) based on other diseases or injuries, e.g. spinal cord or brain injury, severe polyneuropathies or neurologic disorders.
  • Posttraumatic osteoarthritis as reason for total knee arthroplasty
  • Bleeding disorder
  • Localized infection in the treatment area
  • Cryoglobulinemia, cold urticaria, paroxysmal cold haemoglobinuria, or Raynaud's syndrome
  • Perioperative peripheral nerve block

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hvidovre Hospital

Hvidovre, 2650, Denmark

RECRUITING

Related Publications (33)

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  • Joshi GP, Stewart J, Kehlet H. Critical appraisal of randomised trials assessing regional analgesic interventions for knee arthroplasty: implications for postoperative pain guidelines development. Br J Anaesth. 2022 Aug;129(2):142-144. doi: 10.1016/j.bja.2022.04.019. Epub 2022 May 24.

    PMID: 35618537BACKGROUND
  • Lunn TH, Andersen LO, Kristensen BB, Husted H, Gaarn-Larsen L, Bandholm T, Ladelund S, Kehlet H. Effect of high-dose preoperative methylprednisolone on recovery after total hip arthroplasty: a randomized, double-blind, placebo-controlled trial. Br J Anaesth. 2013 Jan;110(1):66-73. doi: 10.1093/bja/aes345. Epub 2012 Sep 17.

    PMID: 22986420BACKGROUND
  • Andersen KG, Christensen KB, Kehlet H, Bidstup PE. The Effect of Pain on Physical Functioning After Breast Cancer Treatment: Development and Validation of an Assessment Tool. Clin J Pain. 2015 Sep;31(9):794-802. doi: 10.1097/AJP.0000000000000156.

    PMID: 25679946BACKGROUND
  • Riddle DL, Wade JB, Jiranek WA, Kong X. Preoperative pain catastrophizing predicts pain outcome after knee arthroplasty. Clin Orthop Relat Res. 2010 Mar;468(3):798-806. doi: 10.1007/s11999-009-0963-y. Epub 2009 Jul 8.

    PMID: 19585177BACKGROUND
  • Rupp M, Lau E, Kurtz SM, Alt V. Projections of Primary TKA and THA in Germany From 2016 Through 2040. Clin Orthop Relat Res. 2020 Jul;478(7):1622-1633. doi: 10.1097/CORR.0000000000001214.

    PMID: 32168057BACKGROUND
  • Cerantola Y, Valerio M, Persson B, Jichlinski P, Ljungqvist O, Hubner M, Kassouf W, Muller S, Baldini G, Carli F, Naesheimh T, Ytrebo L, Revhaug A, Lassen K, Knutsen T, Aarsether E, Wiklund P, Patel HR. Guidelines for perioperative care after radical cystectomy for bladder cancer: Enhanced Recovery After Surgery (ERAS((R))) society recommendations. Clin Nutr. 2013 Dec;32(6):879-87. doi: 10.1016/j.clnu.2013.09.014. Epub 2013 Oct 17.

    PMID: 24189391BACKGROUND
  • Lavand'homme PM, Kehlet H, Rawal N, Joshi GP; PROSPECT Working Group of the European Society of Regional Anaesthesia and Pain Therapy (ESRA). Pain management after total knee arthroplasty: PROcedure SPEcific Postoperative Pain ManagemenT recommendations. Eur J Anaesthesiol. 2022 Sep 1;39(9):743-757. doi: 10.1097/EJA.0000000000001691. Epub 2022 Jul 20.

    PMID: 35852550BACKGROUND
  • Ju H, Feng Y, Yang BX, Wang J. Comparison of epidural analgesia and intercostal nerve cryoanalgesia for post-thoracotomy pain control. Eur J Pain. 2008 Apr;12(3):378-84. doi: 10.1016/j.ejpain.2007.07.011. Epub 2007 Sep 17.

    PMID: 17870625BACKGROUND
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    PMID: 29783896BACKGROUND
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MeSH Terms

Conditions

Pain, Postoperative

Interventions

salicylhydroxamic acid

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and Symptoms

Study Officials

  • Anders H Springborg, MD

    Copenhagen University Hospital, Hvidovre

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Anders H Springborg, MD

CONTACT

Nicolai B Foss, dr.med.

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Anaesthesiologist performing intervention is unblinded
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The patients will be randomized to 2 groups with 22 in each. Sham cryo (sham-group): Postoperative sham cryoneurolysis of the lower extremity. Cryoneurolysis (cryo-group): Postoperative cryoneurolysis of the superficial genicular nerves, i.e., the infrapatellar branches of the saphenous nerve (ISN) and the anterior femoral cutaneous nerve (AFCN).
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Dr.

Study Record Dates

First Submitted

October 6, 2023

First Posted

October 18, 2023

Study Start

March 19, 2024

Primary Completion

June 1, 2025

Study Completion

October 1, 2025

Last Updated

July 16, 2024

Record last verified: 2024-07

Data Sharing

IPD Sharing
Will share

Anonymized data from all participants will be made available upon request after the study is published.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
The data will become available after the study is successfully published. There is no end date to the availability of the data.

Locations