Knee OsteoarthritisNCT04190797
Photobiomodulation on Postoperative Pain
A study of Knee Osteoarthritis and Metabolic Disease, run by University of Sao Paulo General Hospital.
Trial summary
Objective: This study is designed to evaluate the short-term efficacy of photobiomodulation for improving pain and function in patients that will undergo total knee replacement and decrease in morphine consumption and adverse effects of opioids. Read more about this study
- Who is it for?
- Ages 60 to 75 years
- Conditions the study is for
- Knee Osteoarthritis, Metabolic Disease
- Type of treatment
- Medical device
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 34 participants
- Where
- No sites listed yet
- Study dates
- 1 Dec 2019to 1 Aug 2020
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 60 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Men and women diagnosed with OAJ with comorbidities (metabolic syndrome, ie, OAJ + at least two overweight / central obesity, diabetes, dyslipidemia, high blood pressure)
- Age between 60 and 75 years awaiting primary TKA at IOT-HC-FMUSP
- Patients not submitted to previous lower limb arthroplasty.
- Patients not submitted to knee infiltration up to 6 months before study.
- Patients without personal history of cognitive, psychiatric and / or neurological disorders, whose symptoms presented at the moment of the evaluation are related or significantly interfere with the functions of attention, memory, logical reasoning, understanding, in order to impair the assimilation of the given guidelines.
- Patients with no personal history of inflammatory arthritis (rheumatoid arthritis, for example)
Who cannot join
- Contraindication for spinal anesthesia and / or peripheral nerve block
- Not having consent signed
- Prior use of strong opioids
- Unable to use PCA method
- Patients undergoing knee infiltration during the study.
- Patients diagnosed with chronic inflammatory arthritis (rheumatoid arthritis, for example) during the study.
Trial locations and contacts
No sites are listed yet.
About this study
Objective: This study is designed to evaluate the short-term efficacy of photobiomodulation for improving pain and function in patients that will undergo total knee replacement and decrease in morphine consumption and adverse effects of opioids. Methods: thirty four patients of both genders that will undergo total knee replacement will participate in this randomized controlled double-blind clinical trial. They will be randomly allocated into two groups: Photobiomodulation group 1 with 18 patients and placebo group with 18 patients and group 3 control without device . Photobiomodulation will be performed twice during 48h, using adivice Light-Aid da BrightPhotomedicine- Brasil, com LED de Arsenieto, Gálio and Alumínio (AsGaAl) of 850 nm device 3B class, measured and calibrated previously .Five points were irradiated on the knee. The placebo group will be treated with the same laser device, but will not be turned on. All patients will receive treatment sessions of photobiomodulation after 24h and 48 h after peripheral nerve blockade (femoral nerve block and nerve supply), applied in 5 points for 5 minutes (300 seconds) close to the incision (that will be protected by transparent film) and repeated every 24h after totaling 2 applications. Patients will be assessed for duration of surgery and anesthesia, assessment of the pain, time to first rescue analgesia request, physical examination, dosimetry of photobiomodulation and amount of morphine consumption using PCA 24h and 48 hours after nerve blockade after surgery. In addition, adverse effects , sedation, paresthesias, motor blockade, nausea and vomiting will be assessed ever 6h during 48h.
Read the detailed description
thirty-four patients treated at the Institute of Orthopedics and Traumatology, University of São Paulo School of Medicine Hospital das Clínicas (IOT-HC-FMUSP), already identified with knee OA awaiting TKA; the thirty-four selected patients will be divided into two groups with 17 patients in each group:
- Photobiomodulation + PCA Group (G1): patients in the PO of knee arthroplasty surgery treated with the photobiomodulation device turned on, 24h and 48h after peripheral nerve block (femoral nerve and obturator nerve) .With conventional analgesia and with the device of PCA.
- Placebo + PCA group (G2): patients in the postoperative period of knee arthroplasty surgery treated with the photobiomodulation device switched off at 24h and 48h after peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the PCA device.
All patients will undergo photobiomodulation treatment sessions after 24h and 48h of peripheral nerve block (femoral and adductor nerve block), applied in two regions: in the femoral nerve region for 4 minutes (240 seconds) and near the surgical incision (protected with clear film) for 2 minutes (120 seconds) and repeated every 24 hours after, totaling 2 applications in 2 regions (see table 1). Patients will be systematically evaluated with identification, duration of surgery and duration of anesthesia, pain assessment, time of first analgesic rescue request, physical examination, photobiomodulation dosimetry and amount of PCA bolus requested every 6h within within 48 hours after nerve block after knee arthroplasty surgery. In addition to assessing and quantifying adverse effects (motor block, sedation, nausea and vomiting). All pain assessments (VAS) and rescue number requests will be performed by "blinded examiners", ie professionals who will not be aware of the group to which the patient will belong.
- Conditions
- Knee Osteoarthritis, Metabolic Disease
- Being tested
- Photobiomodulation + patiente controled anaethesia (PCA), Placebo + patiente controled anaethesia (PCA)
- Keywords
- Laser Therapy, Osteoarthritis, Knee
- Medical subject headings
- Osteoarthritis, Knee, Metabolic Diseases, Osteoarthritis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Photobiomodulation + patiente controled anaethesia (PCA)Device
Patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device connected, 24h and 48h after the peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA.
Placebo + patiente controled anaethesia (PCA)Device
Patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device switched off, in 24h and 48h after peripheral nerve bloc (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA.
| Study group | Role | What they receive |
|---|---|---|
| Experimental | Experimental | Photobiomodulation + patiente controled anaethesia (PCA) group (G1): patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device connected, 24h and 48h after the peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA. Receives: Device: Photobiomodulation + patiente controled anaethesia (PCA) |
| Control | Active comparator | Placebo + PCA group (G2): patients undergoing knee arthroplasty surgery treated with the Photobiomodulation device switched off, in 24h and 48h after peripheral nerve blockade (femoral nerve and obturator nerve). With conventional analgesia and with the PCA apparatus. Receives: Device: Placebo + patiente controled anaethesia (PCA) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Evaluate if photobiomodulation improves postoperative pain by VAS during hospital stay.
Apply the VAS (Visual Analog Scale), range: 0 no pain - 100 worse pain
Measured: Day 2 after procedure
Secondary outcomes (3)
Evaluate adverse events arising within 48 hours after surgery
Will evaluate at 6:00 (immediate postoperative day) 6:00 , 12:00., 18:00 (1st postoperative day) and 6:00 and 12:00 (second postoperative day)
Measured: Day 2 after procedure
Evaluate morphine consumption in a patient-controlled analgesia device (PCA) from the immediate postoperative period up to 48h after the procedure
Through the patient-controlled analgesia (PCA) method
Measured: Day 2 after procedure
Measure time to first request for analgesia rescue after peripheral nerve block
Through the patient-controlled analgesia (PCA) method
Measured: Day 2 after procedure
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted9 Dec 2019
- Study start1 Dec 2019 (estimated)
- Primary completion1 Aug 2020 (estimated)
- Study completion1 Aug 2020 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (14)Papers the sponsor has linked to this study.
- Other trials for Knee OsteoarthritisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 34 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Sao Paulo General Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Marcia Uchoa Rezende, University of Sao Paulo General Hospital
- Investigators
- George Freire, MD, Principal investigator, University of São Paulo General Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04190797
- Sponsor's protocol ID
- 23338619.4.0000.0068
- Status last verified
- Dec 2019
- First submitted
- 3 Dec 2019
- Last updated
- 9 Dec 2019
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Hawker GA, Badley EM, Borkhoff CM, Croxford R, Davis AM, Dunn S, Gignac MA, Jaglal SB, Kreder HJ, Sale JE. Which patients are most likely to benefit from total joint arthroplasty? Arthritis Rheum. 2013 May;65(5):1243-52. doi: 10.1002/art.37901.
PubMed 23459843Fedriani de Matos JJ, Atienza Carrasco FJ, Diaz Crespo J, Moreno Martin A, Tatsidis Tatsidis P, Torres Morera LM. Effectiveness and safety of continuous ultrasound-guided femoral nerve block versus epidural analgesia after total knee arthroplasty. Rev Esp Anestesiol Reanim. 2017 Feb;64(2):79-85. doi: 10.1016/j.redar.2016.05.008. Epub 2016 Jul 9. English, Spanish.
PubMed 27400891Gan TJ, Habib AS, Miller TE, White W, Apfelbaum JL. Incidence, patient satisfaction, and perceptions of post-surgical pain: results from a US national survey. Curr Med Res Opin. 2014 Jan;30(1):149-60. doi: 10.1185/03007995.2013.860019. Epub 2013 Nov 15.
PubMed 24237004Pogatzki-Zahn EM, Segelcke D, Schug SA. Postoperative pain-from mechanisms to treatment. Pain Rep. 2017 Mar 15;2(2):e588. doi: 10.1097/PR9.0000000000000588. eCollection 2017 Mar.
PubMed 29392204Shanthanna H, Huilgol M, Manivackam VK, Maniar A. Comparative study of ultrasound-guided continuous femoral nerve blockade with continuous epidural analgesia for pain relief following total knee replacement. Indian J Anaesth. 2012 May;56(3):270-5. doi: 10.4103/0019-5049.98776.
PubMed 22923827Al-Zahrani T, Doais KS, Aljassir F, Alshaygy I, Albishi W, Terkawi AS. Randomized clinical trial of continuous femoral nerve block combined with sciatic nerve block versus epidural analgesia for unilateral total knee arthroplasty. J Arthroplasty. 2015 Jan;30(1):149-54. doi: 10.1016/j.arth.2014.07.032. Epub 2014 Jul 31.
PubMed 25149364Karu T. Primary and secondary mechanisms of action of visible to near-IR radiation on cells. J Photochem Photobiol B. 1999 Mar;49(1):1-17. doi: 10.1016/S1011-1344(98)00219-X.
PubMed 10365442Pinto FC, Chavantes MC, Pinto NC, Alho EJ, Yoshimura EM, Matushita H, Krebs VL, Teixeira MJ. Novel treatment immediately after myelomeningocele repair applying low-level laser therapy in newborns: a pilot study. Pediatr Neurosurg. 2010;46(4):249-54. doi: 10.1159/000319363. Epub 2010 Dec 15.
PubMed 21160232Bjordal JM, Ljunggren AE, Klovning A, Slordal L. Non-steroidal anti-inflammatory drugs, including cyclo-oxygenase-2 inhibitors, in osteoarthritic knee pain: meta-analysis of randomised placebo controlled trials. BMJ. 2004 Dec 4;329(7478):1317. doi: 10.1136/bmj.38273.626655.63. Epub 2004 Nov 23.
PubMed 15561731Tam G. Low power laser therapy and analgesic action. J Clin Laser Med Surg. 1999 Feb;17(1):29-33. doi: 10.1089/clm.1999.17.29.
PubMed 10204446Masoumipoor M, Jameie SB, Janzadeh A, Nasirinezhad F, Soleimani M, Kerdary M. Effects of 660- and 980-nm low-level laser therapy on neuropathic pain relief following chronic constriction injury in rat sciatic nerve. Lasers Med Sci. 2014 Sep;29(5):1593-8. doi: 10.1007/s10103-014-1552-1. Epub 2014 Mar 16.
PubMed 24634001Medalha CC, Di Gangi GC, Barbosa CB, Fernandes M, Aguiar O, Faloppa F, Leite VM, Renno AC. Low-level laser therapy improves repair following complete resection of the sciatic nerve in rats. Lasers Med Sci. 2012 May;27(3):629-35. doi: 10.1007/s10103-011-1008-9. Epub 2011 Oct 19.
PubMed 22009383Fukuda VO, Fukuda TY, Guimaraes M, Shiwa S, de Lima Bdel C, Martins RA, Casarotto RA, Alfredo PP, Bjordal JM, Fucs PM. SHORT-TERM EFFICACY OF LOW-LEVEL LASER THERAPY IN PATIENTS WITH KNEE OSTEOARTHRITIS: A RANDOMIZED PLACEBO-CONTROLLED, DOUBLE-BLIND CLINICAL TRIAL. Rev Bras Ortop. 2015 Dec 6;46(5):526-33. doi: 10.1016/S2255-4971(15)30407-9. eCollection 2011 Sep-Oct.
PubMed 27027049de Rezende MU, Varone BB, Martuscelli DF, Ocampos GP, Freire GMG, Pinto NC, de Sousa MVP. Pilot study of the effect of therapeutic photobiomodulation on postoperative pain in knee arthroplasty. Braz J Anesthesiol. 2022 Jan-Feb;72(1):159-161. doi: 10.1016/j.bjane.2021.07.040. Epub 2021 Nov 17.
PubMed 34800495
Study at a glance
From the registry record, last updated by the sponsor on 9 Dec 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Photobiomodulation on Postoperative Pain
- ClinicalTrials.gov ID
- NCT04190797
- Acronym / sponsor ID
- 23338619.4.0000.0068
- Conditions
- Knee Osteoarthritis, Metabolic Disease
- Keywords
- Laser Therapy, Osteoarthritis, Knee
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 34 participants (estimated)
- Lead sponsor
- University of Sao Paulo General HospitalUniversity, hospital or other
- Study start
- 1 Dec 2019 (estimated)
- Primary completion
- 1 Aug 2020 (estimated)
- Study completion
- 1 Aug 2020 (estimated)
- First posted
- 9 Dec 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Objective: This study is designed to evaluate the short-term efficacy of photobiomodulation for improving pain and function in patients that will undergo total knee replacement and decrease in morphine consumption and adverse effects of opioids. Methods: thirty four patients of both genders that will undergo total knee replacement will participate in this randomized controlled double-blind clinical trial. They will be randomly allocated into two groups: Photobiomodulation group 1 with 18 patients and placebo group with 18 patients and group 3 control without device . Photobiomodulation will be performed twice during 48h, using adivice Light-Aid da BrightPhotomedicine- Brasil, com LED de Arsenieto, Gálio and Alumínio (AsGaAl) of 850 nm device 3B class, measured and calibrated previously .Five points were irradiated on the knee. The placebo group will be treated with the same laser device, but will not be turned on. All patients will receive treatment sessions of photobiomodulation after 24h and 48 h after peripheral nerve blockade (femoral nerve block and nerve supply), applied in 5 points for 5 minutes (300 seconds) close to the incision (that will be protected by transparent film) and repeated every 24h after totaling 2 applications. Patients will be assessed for duration of surgery and anesthesia, assessment of the pain, time to first rescue analgesia request, physical examination, dosimetry of photobiomodulation and amount of morphine consumption using PCA 24h and 48 hours after nerve blockade after surgery. In addition, adverse effects , sedation, paresthesias, motor blockade, nausea and vomiting will be assessed ever 6h during 48h.
Detailed description
thirty-four patients treated at the Institute of Orthopedics and Traumatology, University of São Paulo School of Medicine Hospital das Clínicas (IOT-HC-FMUSP), already identified with knee OA awaiting TKA; the thirty-four selected patients will be divided into two groups with 17 patients in each group:
- Photobiomodulation + PCA Group (G1): patients in the PO of knee arthroplasty surgery treated with the photobiomodulation device turned on, 24h and 48h after peripheral nerve block (femoral nerve and obturator nerve) .With conventional analgesia and with the device of PCA.
- Placebo + PCA group (G2): patients in the postoperative period of knee arthroplasty surgery treated with the photobiomodulation device switched off at 24h and 48h after peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the PCA device.
All patients will undergo photobiomodulation treatment sessions after 24h and 48h of peripheral nerve block (femoral and adductor nerve block), applied in two regions: in the femoral nerve region for 4 minutes (240 seconds) and near the surgical incision (protected with clear film) for 2 minutes (120 seconds) and repeated every 24 hours after, totaling 2 applications in 2 regions (see table 1). Patients will be systematically evaluated with identification, duration of surgery and duration of anesthesia, pain assessment, time of first analgesic rescue request, physical examination, photobiomodulation dosimetry and amount of PCA bolus requested every 6h within within 48 hours after nerve block after knee arthroplasty surgery. In addition to assessing and quantifying adverse effects (motor block, sedation, nausea and vomiting). All pain assessments (VAS) and rescue number requests will be performed by "blinded examiners", ie professionals who will not be aware of the group to which the patient will belong.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Experimental | Experimental | Device: Photobiomodulation + patiente controled anaethesia (PCA)Photobiomodulation + patiente controled anaethesia (PCA) group (G1): patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device connected, 24h and 48h after the peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA. |
| Control | Active comparator | Device: Placebo + patiente controled anaethesia (PCA)Placebo + PCA group (G2): patients undergoing knee arthroplasty surgery treated with the Photobiomodulation device switched off, in 24h and 48h after peripheral nerve blockade (femoral nerve and obturator nerve). With conventional analgesia and with the PCA apparatus. |
Who may qualify
- Ages
- 60 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- Men and women diagnosed with OAJ with comorbidities (metabolic syndrome, ie, OAJ + at least two overweight / central obesity, diabetes, dyslipidemia, high blood pressure)
- Age between 60 and 75 years awaiting primary TKA at IOT-HC-FMUSP
- Patients not submitted to previous lower limb arthroplasty.
- Patients not submitted to knee infiltration up to 6 months before study.
- Patients without personal history of cognitive, psychiatric and / or neurological disorders, whose symptoms presented at the moment of the evaluation are related or significantly interfere with the functions of attention, memory, logical reasoning, understanding, in order to impair the assimilation of the given guidelines.
Key exclusion criteria (6 listed)
- Contraindication for spinal anesthesia and / or peripheral nerve block
- Not having consent signed
- Prior use of strong opioids
- Unable to use PCA method
- Patients undergoing knee infiltration during the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Photobiomodulation + patiente controled anaethesia (PCA)Patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device connected, 24h and 48h after the peripheral nerve block (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA. | Device | Experimental |
| Placebo + patiente controled anaethesia (PCA)Patients in the immediate postoperateve of knee arthroplasty surgery treated with the Photobiomodulation device switched off, in 24h and 48h after peripheral nerve bloc (femoral nerve and obturator nerve). With conventional analgesia and with the device of PCA. | Device | Control |
Primary outcome
Evaluate if photobiomodulation improves postoperative pain by VAS during hospital stay.
Time frame: Day 2 after procedure
Apply the VAS (Visual Analog Scale), range: 0 no pain - 100 worse pain
3 secondary outcomes
Evaluate adverse events arising within 48 hours after surgery
Time frame: Day 2 after procedure
Evaluate morphine consumption in a patient-controlled analgesia device (PCA) from the immediate postoperative period up to 48h after the procedure
Time frame: Day 2 after procedure
Measure time to first request for analgesia rescue after peripheral nerve block
Time frame: Day 2 after procedure
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 9 Dec 2019.
- Background: PubMed 23459843Hawker GA, Badley EM, Borkhoff CM, Croxford R, Davis AM, Dunn S, Gignac MA, Jaglal SB, Kreder HJ, Sale JE. Which patients are most likely to benefit from total joint arthroplasty? Arthritis Rheum. 2013 May;65(5):1243-52. doi: 10.1002/art.37901.
- Background: PubMed 27400891Fedriani de Matos JJ, Atienza Carrasco FJ, Diaz Crespo J, Moreno Martin A, Tatsidis Tatsidis P, Torres Morera LM. Effectiveness and safety of continuous ultrasound-guided femoral nerve block versus epidural analgesia after total knee arthroplasty. Rev Esp Anestesiol Reanim. 2017 Feb;64(2):79-85. doi: 10.1016/j.redar.2016.05.008. Epub 2016 Jul 9. English, Spanish.
- Background: PubMed 24237004Gan TJ, Habib AS, Miller TE, White W, Apfelbaum JL. Incidence, patient satisfaction, and perceptions of post-surgical pain: results from a US national survey. Curr Med Res Opin. 2014 Jan;30(1):149-60. doi: 10.1185/03007995.2013.860019. Epub 2013 Nov 15.
- Background: PubMed 29392204Pogatzki-Zahn EM, Segelcke D, Schug SA. Postoperative pain-from mechanisms to treatment. Pain Rep. 2017 Mar 15;2(2):e588. doi: 10.1097/PR9.0000000000000588. eCollection 2017 Mar.
- Background: PubMed 22923827Shanthanna H, Huilgol M, Manivackam VK, Maniar A. Comparative study of ultrasound-guided continuous femoral nerve blockade with continuous epidural analgesia for pain relief following total knee replacement. Indian J Anaesth. 2012 May;56(3):270-5. doi: 10.4103/0019-5049.98776.
- Background: PubMed 25149364Al-Zahrani T, Doais KS, Aljassir F, Alshaygy I, Albishi W, Terkawi AS. Randomized clinical trial of continuous femoral nerve block combined with sciatic nerve block versus epidural analgesia for unilateral total knee arthroplasty. J Arthroplasty. 2015 Jan;30(1):149-54. doi: 10.1016/j.arth.2014.07.032. Epub 2014 Jul 31.
- Background: PubMed 10365442Karu T. Primary and secondary mechanisms of action of visible to near-IR radiation on cells. J Photochem Photobiol B. 1999 Mar;49(1):1-17. doi: 10.1016/S1011-1344(98)00219-X.
- Background: PubMed 21160232Pinto FC, Chavantes MC, Pinto NC, Alho EJ, Yoshimura EM, Matushita H, Krebs VL, Teixeira MJ. Novel treatment immediately after myelomeningocele repair applying low-level laser therapy in newborns: a pilot study. Pediatr Neurosurg. 2010;46(4):249-54. doi: 10.1159/000319363. Epub 2010 Dec 15.
- Background: PubMed 15561731Bjordal JM, Ljunggren AE, Klovning A, Slordal L. Non-steroidal anti-inflammatory drugs, including cyclo-oxygenase-2 inhibitors, in osteoarthritic knee pain: meta-analysis of randomised placebo controlled trials. BMJ. 2004 Dec 4;329(7478):1317. doi: 10.1136/bmj.38273.626655.63. Epub 2004 Nov 23.
- Background: PubMed 10204446Tam G. Low power laser therapy and analgesic action. J Clin Laser Med Surg. 1999 Feb;17(1):29-33. doi: 10.1089/clm.1999.17.29.
- Background: PubMed 24634001Masoumipoor M, Jameie SB, Janzadeh A, Nasirinezhad F, Soleimani M, Kerdary M. Effects of 660- and 980-nm low-level laser therapy on neuropathic pain relief following chronic constriction injury in rat sciatic nerve. Lasers Med Sci. 2014 Sep;29(5):1593-8. doi: 10.1007/s10103-014-1552-1. Epub 2014 Mar 16.
- Background: PubMed 22009383Medalha CC, Di Gangi GC, Barbosa CB, Fernandes M, Aguiar O, Faloppa F, Leite VM, Renno AC. Low-level laser therapy improves repair following complete resection of the sciatic nerve in rats. Lasers Med Sci. 2012 May;27(3):629-35. doi: 10.1007/s10103-011-1008-9. Epub 2011 Oct 19.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
George Freire, MD principal investigator
University of São Paulo General Hospital
Questions about this trial
What is this clinical trial studying?
A study of Knee Osteoarthritis and Metabolic Disease, run by University of Sao Paulo General Hospital.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 9 Dec 2019. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Livia Ab (1126612473, murmedicina@outlook.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Evaluate if photobiomodulation improves postoperative pain by VAS during hospital stay. (time frame: Day 2 after procedure). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04190797, which also lists 14 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Dec 2019.