CClinicalTrials.gg
Status unknownNCT03025594ToxinUpdated Jan 24, 2017

Gonyautoxins Local Periarticular Injection for Pain Management After Total Knee Arthroplasty

A Phase 3 interventional study of Gonyautoxins and Chirocaine ketorolac epinephrine in Knee Arthroplasty and Pain Management, sponsored by maximiliano barahona vasquez. Status unknown at 2 sites in Chile. Open to participants aged Up to 80 Years. Per ClinicalTrials.gov, last updated 2017-01-24.

Sponsored by maximiliano barahona vasquez · Phase 3, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jan 2017), so the status shown — last known as Recruiting — may be out of date.
Phase
Phase 3
Study type
Interventional
Enrollment
64
Allocation
Randomized
Ages
Up to 80 Years
Sex
All
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Study summary

The aim of this study is to demostrate the eficcacy in pain control management after total knee arthroplasty of Gonyautoxin. Local administration during surgery of Gonyautoxin before wound closure can achieved better pain control and lower morphin use during hospital stay compared to local administration of chirocaine, ketorolac and epinephrine

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Conditions studied

  • Knee Arthroplasty
  • Pain Management

Keywords

  • Paralytic sellfish toxins
  • Gonyautoxin
  • Post surgery pain management
  • total knee arthroplasty
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In context

Lead sponsor

This is the only study on the registry with maximiliano barahona vasquez as lead sponsor.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Up to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Patients who required total knee arthroplasty due to knee osteoarthritis ( Kellgren and Lawrence score of 2 or more), with no response to conservative management.
  • Without known allergies to the drugs used in the study
  • Anesthetic risk: ASA Score 1,2,3.

Exclusion criteria

Exclusion Criteria:

  • Obesity, defined as body Mass index over 35
  • Previous Knee surgery
  • Mellitus diabetes
  • Organic brain damage
  • Rheumatic Arthritis
  • Coagulation deficit
  • Liver disease
  • Chronic obstructive pulmonary disease
  • Chronic consumption of opiods
  • Refusal to participate in the study
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
64 participants (estimated)

Study arms

  • Experimental
    Gonyautoxin

    Gonyautoxin 40mcg

    Drug: Gonyautoxins

  • Active comparator
    Control

    Mix of chirocaine 0,2%, ketorolac and epinephrine..

    Drug: Chirocaine ketorolac epinephrine

Interventions

  • DrugGonyautoxins

    Periarticular infiltration of 40mcg of Gonyautoxin diluted in 30cc of Sodium Chloride 0.9%, with pH 6.2 and isosmotic. This solution will be administer targeting posterior capsule, both retinaculum, collateral ligaments, quadriceps and patelar tendon and subcutaneous tissue just before wound closure of total knee arhroplasty

  • DrugChirocaine ketorolac epinephrine

    Periarticular infiltration of 150ml of Chirocaine 2%, 60mg of ketorolac and 0.75mg of epinephrine. This solution will be administer targeting posterior capsule, both retinaculum, collateral ligaments, quadriceps and patelar tendon and subcutaneous tissue jbefore wound closure of total knee arhroplasty.

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What researchers measure

Primary outcomes

  1. morphine consume

    total consumption of morphine at 60 hours after total knee arthroplaty

    Time frame: 60hrs post surgery

  2. range of motion 1

    Range of motion of the knee that underwent arthroplasty after 12 hours of surgery

    Time frame: 12hours post surgery

Secondary outcomes

  1. early morphine consume

    total morphine consumption during first 24 hours after total knee arthroplaty

    Time frame: 1 day after surgery

  2. range of motion 2

    Range of motion of the knee that underwent arthroplasty at 36 hours after surgery

    Time frame: 36 hours after surgery

  3. range of motion 3

    Range of motion of the knee that underwent arthroplasty at 60 hours after surgery

    Time frame: 60 hours after surgery

  4. time of up and go test 1

    Difference in speed when performing the "up and go" test, which consists of getting up from a chair walk 3 meters and return to sit in the same chair. Comparision will be made between time achieved at 24 hours after surgery compared to time achieved before surgery.

    Time frame: 1 day after surgery

  5. time of up and go test 2

    Difference in speed when performing the "up and go" test, which consists of getting up from a chair walk 3 meters and return to sit in the same chair. Comparision will be made between time achieved at 48 hours after surgery compared to time achieved before surgery.

    Time frame: 2 days after surgery

  6. pain visual analague scale 1

    pain visual analague scale (scale 0-10) applied at rest and post physioterapy

    Time frame: 12 hours post surgery

  7. pain visual analague scale 2

    pain visual analague scale (scale 0-10) applied at rest and post physioterapy

    Time frame: 36 hours post surgery

  8. pain visual analague scale 3

    pain visual analague scale (scale 0-10) applied at rest and post physioterapy

    Time frame: 60 hours post surgery

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Study locations

1 of 2 sites recruiting
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References and documents

Publications

  • Manriquez V, Castro Caperan D, Guzman R, Naser M, Iglesia V, Lagos N. First evidence of neosaxitoxin as a long-acting pain blocker in bladder pain syndrome. Int Urogynecol J. 2015 Jun;26(6):853-8. doi: 10.1007/s00192-014-2608-2. Epub 2015 Jan 9. PubMed 25571865 ↗
  • Rodriguez-Navarro AJ, Lagos M, Figueroa C, Garcia C, Recabal P, Silva P, Iglesias V, Lagos N. Potentiation of local anesthetic activity of neosaxitoxin with bupivacaine or epinephrine: development of a long-acting pain blocker. Neurotox Res. 2009 Nov;16(4):408-15. doi: 10.1007/s12640-009-9092-3. Epub 2009 Jul 28. PubMed 19636660 ↗
  • Rodriguez-Navarro AJ, Lagos N, Lagos M, Braghetto I, Csendes A, Hamilton J, Figueroa C, Truan D, Garcia C, Rojas A, Iglesias V, Brunet L, Alvarez F. Neosaxitoxin as a local anesthetic: preliminary observations from a first human trial. Anesthesiology. 2007 Feb;106(2):339-45. doi: 10.1097/00000542-200702000-00023. PubMed 17264729 ↗
  • Garrido R, Lagos N, Lattes K, Abedrapo M, Bocic G, Cuneo A, Chiong H, Jensen C, Azolas R, Henriquez A, Garcia C. Gonyautoxin: new treatment for healing acute and chronic anal fissures. Dis Colon Rectum. 2005 Feb;48(2):335-40; discussion 340-3. doi: 10.1007/s10350-004-0893-4. PubMed 15812585 ↗
  • Garrido R, Lagos N, Lattes K, Azolas CG, Bocic G, Cuneo A, Chiong H, Jensen C, Henriquez AI, Fernandez C. The gonyautoxin 2/3 epimers reduces anal tone when injected in the anal sphincter of healthy adults. Biol Res. 2004;37(3):395-403. doi: 10.4067/s0716-97602004000300005. PubMed 15515965 ↗
  • Garcia C, del Carmen Bravo M, Lagos M, Lagos N. Paralytic shellfish poisoning: post-mortem analysis of tissue and body fluid samples from human victims in the Patagonia fjords. Toxicon. 2004 Feb;43(2):149-58. doi: 10.1016/j.toxicon.2003.11.018. PubMed 15019474 ↗
  • Hinzpeter J, Barrientos C, Zamorano A, Martinez A, Palet M, Wulf R, Barahona M, Sepulveda JM, Guerra M, Bustamante T, Del Campo M, Tapia E, Lagos N. Gonyautoxins: First evidence in pain management in total knee arthroplasty. Toxicon. 2016 Sep 1;119:180-5. doi: 10.1016/j.toxicon.2016.06.010. Epub 2016 Jun 15. PubMed 27317871 ↗
  • Fan L, Yu X, Zan P, Liu J, Ji T, Li G. Comparison of Local Infiltration Analgesia With Femoral Nerve Block for Total Knee Arthroplasty: A Prospective, Randomized Clinical Trial. J Arthroplasty. 2016 Jun;31(6):1361-1365. doi: 10.1016/j.arth.2015.12.028. Epub 2015 Dec 20. PubMed 26810604 ↗
  • Chaumeron A, Audy D, Drolet P, Lavigne M, Vendittoli PA. Periarticular injection in knee arthroplasty improves quadriceps function. Clin Orthop Relat Res. 2013 Jul;471(7):2284-95. doi: 10.1007/s11999-013-2928-4. Epub 2013 Mar 21. Erratum In: Clin Orthop Relat Res. 2013 Jun;471(6):2042. PubMed 23516031 ↗
  • Andersen LO, Kehlet H. Analgesic efficacy of local infiltration analgesia in hip and knee arthroplasty: a systematic review. Br J Anaesth. 2014 Sep;113(3):360-74. doi: 10.1093/bja/aeu155. Epub 2014 Jun 17. PubMed 24939863 ↗
  • Albrecht E, Guyen O, Jacot-Guillarmod A, Kirkham KR. The analgesic efficacy of local infiltration analgesia vs femoral nerve block after total knee arthroplasty: a systematic review and meta-analysis. Br J Anaesth. 2016 May;116(5):597-609. doi: 10.1093/bja/aew099. PubMed 27106963 ↗
  • Toftdahl K, Nikolajsen L, Haraldsted V, Madsen F, Tonnesen EK, Soballe K. Comparison of peri- and intraarticular analgesia with femoral nerve block after total knee arthroplasty: a randomized clinical trial. Acta Orthop. 2007 Apr;78(2):172-9. doi: 10.1080/17453670710013645. PubMed 17464603 ↗
  • Moghtadaei M, Farahini H, Faiz SH, Mokarami F, Safari S. Pain Management for Total Knee Arthroplasty: Single-Injection Femoral Nerve Block versus Local Infiltration Analgesia. Iran Red Crescent Med J. 2014 Jan;16(1):e13247. doi: 10.5812/ircmj.13247. Epub 2014 Jan 5. PubMed 24719708 ↗
  • Affas F, Nygards EB, Stiller CO, Wretenberg P, Olofsson C. Pain control after total knee arthroplasty: a randomized trial comparing local infiltration anesthesia and continuous femoral block. Acta Orthop. 2011 Aug;82(4):441-7. doi: 10.3109/17453674.2011.581264. Epub 2011 May 11. PubMed 21561303 ↗
  • Ng FY, Chiu KY, Yan CH, Ng KF. Continuous femoral nerve block versus patient-controlled analgesia following total knee arthroplasty. J Orthop Surg (Hong Kong). 2012 Apr;20(1):23-6. doi: 10.1177/230949901202000105. PubMed 22535806 ↗

Individual participant data

Plan to share: Yes — First, a formal letter must be send to the Ethical Committee of Hospital Clinico Universidad de Chile. If the committee gives its consent, the principal investigator will send IPD to whom request it.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 24, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03025594
Lead sponsor
maximiliano barahona vasquez
Responsible party
maximiliano barahona vasquez (MD, MBiostat, University of Chile) — Sponsor-investigator
First posted
Jan 19, 2017
Start date
Jan 2017
Primary completion
Aug 2017 (estimated)
Completion
Aug 2017 (estimated)
Last update
Jan 24, 2017

Study contacts

Barahona A Maximiliano, MD MBiostat
Contact
maxbarahonavasquez@gmail.com
56 2 29788225
Barrientos N Cristian, MD
Contact
cristianbarrien@gmail.com
56 2 29788226
Hinzpeter R Jaime, MD
principal investigator · orthopaedic surgeon

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Jan 2017. You cannot join it, but the record below documents what was studied.

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