Spinal Stenosis LumbarNCT03105167
Cortical Bone Trajectory Screws vs. Traditional Pedicle Screws Fixation
A study testing cortical bone trajectory screws and pedicle screws in people with Spinal Stenosis Lumbar and Lumbar Disc Herniation, run by Second Affiliated Hospital of Wenzhou Medical University at 1 site in China.
Trial summary
Transforaminal lumbar interbody fusion (TLIF) had been favorable for effectively decrease pain and disability in specific spinal disorders; however, there has been concern regarding pedicle screw placement during TLIF surgery. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Spinal Stenosis Lumbar, Lumbar Disc Herniation, Intervertebral Disc Degeneration
- What is being tested?
- cortical bone trajectory screws and pedicle screws
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 108 participants
- Where
- 1 siteChina
- Study dates
- 7 May 2018to 13 Dec 2021
- 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 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Age of at least 18 years;
- All of participants will be informed consent;
- Chronic low back pain (visual analogue scale at least 3 out of 10 at rest and at least 5 out of 10 under physical strain) after having failed conservative treatment for 6 months;
- Single-segment lower lumbar vertebral disease (Including lumbar spinal cannal stenosis, foraminal stenosis, segmental instability, lumbar disc herniation, and painful disc degeneration (back disc);
Who cannot join
- Serious deformity of lumbar vertebrae;
- Dysplasia of lumbar pedicle or vertebral laminar;
- Obvious osteoporosis of lumbar vertebrae;
- Metabolic bone diseases such as osteomalacia or Paget's disease;
- Spondylolisthesis > grade 2 (Meyerding);
- Caudaequina injury or severe radiculopathy;
Show all 11Show fewer
- Post inflammatory instability of the vertebral spine;
- Body mass index > 30;
- Immunologic diseases or Metabolic syndrome;
- Therapy with systemic corticosteroids or immunosuppressants;
- Current using Coumadin (or Warfarin) or Heparin therapy for more than 6 months at the time of operation.
Trial locations and contacts
1 site in 1 country.
China1 site, 1 recruiting
- Recruiting
The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
Wenzhou, Zhejiang, 325000
TING LI, 057788002888, feclinicalresearch@163.com
WENFEI NI
About this study
Official title: Transforaminal Lumbar Interbody Fusion With Cortical Bone Trajectory Screws vs. Traditional Pedicle Screws Fixation: a Multicentre Randomised Controlled Trial
Transforaminal lumbar interbody fusion (TLIF) had been favorable for effectively decrease pain and disability in specific spinal disorders; however, there has been concern regarding pedicle screw placement during TLIF surgery. Recently, several biomechanical studies had demonstrated that CBT technique achieves screw purchase and strength equivalent to or greater than the traditional method. Furthermore, Only 1 report examined the surgical outcomes of TLIF with CBT screws fixation compared with TLIF using traditional pedicle screws fixation. TLIF with CBT screws fixation may be effective for specific spinal disorders, but the evidence supporting this possibility is still limited.
Read the detailed description
Methods and analysis: Blinded Randomized Controlled Trial (RCT) will be conducted. A total of 108 participants will be randomly allocated to either a CBT-TLIF group or a PS-TLIF group at a ratio of 1:1. The primary clinical outcome measures are: change in back and lower limb pain with Visual analogue scale (VAS) and change in quality adjusted life years (QALY) will be assessed by EQ-5D-5L. Measurements will be carried out at five fixed time points (pre-operatively and at 3, 6, 12 and 24 months).
Ethics and dissemination: The study had been reviewed and approved by the ethics committee of the Second affiliated hospital of the Wenzhou Medical University, Wenzhou, China(batch:2017-03). The results will be presented in peer-reviewed journals and related website within 2 years after the last operation.
- Being tested
- cortical bone trajectory screws, pedicle screws
- Keywords
- CBT, RCT, TLIF
- Medical subject headings
- Intervertebral Disc Displacement, Intervertebral Disc Degeneration
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
cortical bone trajectory screwsProcedure or surgery
cortical bone trajectory screws fixation takes the place of traditional pedicle screws fixation will be used in transforaminal lumbar interbody fusion.
pedicle screwsProcedure or surgery
traditional pedicle screws fixation will be used in transforaminal lumbar interbody fusion.
| Study group | Role | What they receive |
|---|---|---|
| CBT-TLIF group | Experimental | Patients who are randomised to the CBT-TLIF group will have cortical bone trajectory screws instead of pedicle screws During the opreation. After preventive use of antibliotics,A small skin incision was made at the fused segment, an entry point for insertion of the CBT screws was drilled in the junction of the center of the superior articular process and 1 mm inferior to the inferior border of the transverse process according to Matsukawa et al.A straight probe was used to create a trajectory for the CBT screws from the entry point to the opposite corner of the pedicle and vertebral body under anteroposterior fluoroscopic guidance.nilateral facetectomy is performed to gain access to the intervertebral disc.Afterwards, interbody fusion was performed.Device: CBT screws. Receives: Procedure: cortical bone trajectory screws |
| PS-TLIF group | Experimental | Patients who are randomised to the PS-TLIF group will have pedicle screws During the opreation. A posterior midline incision, about 6 cm, was performed at the level of interest level under fluoroscopic guidance. Pedicle screws were inserted into the vertebral body by using freehand, and the inferior and superior articular processes and part pf the lamina were removed by using an osteotome. To expose the lateral border of the ipsilateral nerve root, the ligamentum flavum was removed. Afterwards, interbody fusion was performed.Device:traditional pedicle screws. Receives: Procedure: pedicle screws |
What is being measured
The primary outcome is the main question the study is designed to answer.
Visual analogue scale(VAS)
pain score
Measured: up to 36 months
Secondary outcomes (3)
Oswestry Disability Index (ODI)
The Oswestry Disability Index pain score
Measured: up to 48 months
Symptomatic adjacent-segment disease (SASD)
Symptomatic adjacent-segment disease rate
Measured: up to 48 months
Japanese Orthopedic Association (JOA)
Japanese Orthopedic Association score
Measured: up to 48 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Apr 2017
- Study start7 May 2018
- Primary completion13 Dec 2020 (estimated)
- Study completion13 Dec 2021 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (21)Papers the sponsor has linked to this study.
- Other trials for Spinal Stenosis LumbarStudies 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
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 108 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Second Affiliated Hospital of Wenzhou Medical University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Wenfei Ni, Second Affiliated Hospital of Wenzhou Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03105167
- Sponsor's protocol ID
- SAHoWMU-CR2017-08-106
- Status last verified
- Jul 2018
- First submitted
- 28 Mar 2017
- Last updated
- 27 Jul 2018
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: All of the patients' outcomes (without patients' personal information) will be public shared within 2 years after clinical trial complete.
Publications
Resnick DK, Choudhri TF, Dailey AT, Groff MW, Khoo L, Matz PG, Mummaneni P, Watters WC 3rd, Wang J, Walters BC, Hadley MN; American Association of Neurological Surgeons/Congress of Neurological Surgeons. Guidelines for the performance of fusion procedures for degenerative disease of the lumbar spine. Part 8: lumbar fusion for disc herniation and radiculopathy. J Neurosurg Spine. 2005 Jun;2(6):673-8. doi: 10.3171/spi.2005.2.6.0673.
PubMed 16028736Brayda-Bruno M, Tibiletti M, Ito K, Fairbank J, Galbusera F, Zerbi A, Roberts S, Wachtel E, Merkher Y, Sivan SS. Advances in the diagnosis of degenerated lumbar discs and their possible clinical application. Eur Spine J. 2014 Jun;23 Suppl 3:S315-23. doi: 10.1007/s00586-013-2960-9. Epub 2013 Aug 27.
PubMed 23978994Omidi-Kashani F, Hasankhani EG, Ashjazadeh A. Lumbar spinal stenosis: who should be fused? An updated review. Asian Spine J. 2014 Aug;8(4):521-30. doi: 10.4184/asj.2014.8.4.521. Epub 2014 Aug 19.
PubMed 25187873Harms JG, Jeszenszky D. Die posteriore, lumbale, interkorporelle Fusion in unilateraler transforaminaler Technik. Oper Orthop Traumatol. 1998 Jun;10(2):90-102. doi: 10.1007/s00064-006-0112-7. No abstract available. German.
PubMed 17332991Rouben D, Casnellie M, Ferguson M. Long-term durability of minimal invasive posterior transforaminal lumbar interbody fusion: a clinical and radiographic follow-up. J Spinal Disord Tech. 2011 Jul;24(5):288-96. doi: 10.1097/BSD.0b013e3181f9a60a.
PubMed 20975594Santoni BG, Hynes RA, McGilvray KC, Rodriguez-Canessa G, Lyons AS, Henson MA, Womack WJ, Puttlitz CM. Cortical bone trajectory for lumbar pedicle screws. Spine J. 2009 May;9(5):366-73. doi: 10.1016/j.spinee.2008.07.008. Epub 2008 Sep 14.
PubMed 18790684Matsukawa K, Yato Y, Kato T, Imabayashi H, Asazuma T, Nemoto K. In vivo analysis of insertional torque during pedicle screwing using cortical bone trajectory technique. Spine (Phila Pa 1976). 2014 Feb 15;39(4):E240-5. doi: 10.1097/BRS.0000000000000116.
PubMed 24253778Baluch DA, Patel AA, Lullo B, Havey RM, Voronov LI, Nguyen NL, Carandang G, Ghanayem AJ, Patwardhan AG. Effect of physiological loads on cortical and traditional pedicle screw fixation. Spine (Phila Pa 1976). 2014 Oct 15;39(22):E1297-302. doi: 10.1097/BRS.0000000000000553.
PubMed 25099320Perez-Orribo L, Kalb S, Reyes PM, Chang SW, Crawford NR. Biomechanics of lumbar cortical screw-rod fixation versus pedicle screw-rod fixation with and without interbody support. Spine (Phila Pa 1976). 2013 Apr 15;38(8):635-41. doi: 10.1097/BRS.0b013e318279a95e.
PubMed 23104197Matsukawa K, Kato T, Yato Y, Sasao H, Imabayashi H, Hosogane N, Asazuma T, Chiba K. Incidence and Risk Factors of Adjacent Cranial Facet Joint Violation Following Pedicle Screw Insertion Using Cortical Bone Trajectory Technique. Spine (Phila Pa 1976). 2016 Jul 15;41(14):E851-E856. doi: 10.1097/BRS.0000000000001459.
PubMed 26796712Kasukawa Y, Miyakoshi N, Hongo M, Ishikawa Y, Kudo D, Shimada Y. Short-Term Results of Transforaminal Lumbar Interbody Fusion Using Pedicle Screw with Cortical Bone Trajectory Compared with Conventional Trajectory. Asian Spine J. 2015 Jun;9(3):440-8. doi: 10.4184/asj.2015.9.3.440. Epub 2015 Jun 8.
PubMed 26097661Chan AW, Tetzlaff JM, Gotzsche PC, Altman DG, Mann H, Berlin JA, Dickersin K, Hrobjartsson A, Schulz KF, Parulekar WR, Krleza-Jeric K, Laupacis A, Moher D. SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials. BMJ. 2013 Jan 8;346:e7586. doi: 10.1136/bmj.e7586.
PubMed 23303884Matsukawa K, Yato Y, Nemoto O, Imabayashi H, Asazuma T, Nemoto K. Morphometric measurement of cortical bone trajectory for lumbar pedicle screw insertion using computed tomography. J Spinal Disord Tech. 2013 Aug;26(6):E248-53. doi: 10.1097/BSD.0b013e318288ac39.
PubMed 23429319Dixon JS, Bird HA. Reproducibility along a 10 cm vertical visual analogue scale. Ann Rheum Dis. 1981 Feb;40(1):87-9. doi: 10.1136/ard.40.1.87.
PubMed 7469530M Versteegh M, M Vermeulen K, M A A Evers S, de Wit GA, Prenger R, A Stolk E. Dutch Tariff for the Five-Level Version of EQ-5D. Value Health. 2016 Jun;19(4):343-52. doi: 10.1016/j.jval.2016.01.003. Epub 2016 Mar 30.
PubMed 27325326
Study at a glance
From the registry record, last updated by the sponsor on 27 Jul 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Transforaminal Lumbar Interbody Fusion With Cortical Bone Trajectory Screws vs. Traditional Pedicle Screws Fixation: a Multicentre Randomised Controlled Trial
- ClinicalTrials.gov ID
- NCT03105167
- Acronym / sponsor ID
- SAHoWMU-CR2017-08-106
- Keywords
- CBT, RCT, TLIF
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 108 participants (estimated)
- Lead sponsor
- Second Affiliated Hospital of Wenzhou Medical UniversityUniversity, hospital or other
- Study start
- 7 May 2018 (actual)
- Primary completion
- 13 Dec 2020 (estimated)
- Study completion
- 13 Dec 2021 (estimated)
- First posted
- 7 Apr 2017 (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.
Transforaminal lumbar interbody fusion (TLIF) had been favorable for effectively decrease pain and disability in specific spinal disorders; however, there has been concern regarding pedicle screw placement during TLIF surgery. Recently, several biomechanical studies had demonstrated that CBT technique achieves screw purchase and strength equivalent to or greater than the traditional method. Furthermore, Only 1 report examined the surgical outcomes of TLIF with CBT screws fixation compared with TLIF using traditional pedicle screws fixation. TLIF with CBT screws fixation may be effective for specific spinal disorders, but the evidence supporting this possibility is still limited.
Detailed description
Methods and analysis: Blinded Randomized Controlled Trial (RCT) will be conducted. A total of 108 participants will be randomly allocated to either a CBT-TLIF group or a PS-TLIF group at a ratio of 1:1. The primary clinical outcome measures are: change in back and lower limb pain with Visual analogue scale (VAS) and change in quality adjusted life years (QALY) will be assessed by EQ-5D-5L. Measurements will be carried out at five fixed time points (pre-operatively and at 3, 6, 12 and 24 months).
Ethics and dissemination: The study had been reviewed and approved by the ethics committee of the Second affiliated hospital of the Wenzhou Medical University, Wenzhou, China(batch:2017-03). The results will be presented in peer-reviewed journals and related website within 2 years after the last operation.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| CBT-TLIF group | Experimental | Procedure: cortical bone trajectory screwsPatients who are randomised to the CBT-TLIF group will have cortical bone trajectory screws instead of pedicle screws During the opreation. After preventive use of antibliotics,A small skin incision was made at the fused segment, an entry point for insertion of the CBT screws was drilled in the junction of the center of the superior articular process and 1 mm inferior to the inferior border of the transverse process according to Matsukawa et al.A straight probe was used to create a trajectory for the CBT screws from the entry point to the opposite corner of the pedicle and vertebral body under anteroposterior fluoroscopic guidance.nilateral facetectomy is performed to gain access to the intervertebral disc.Afterwards, interbody fusion was performed.Device: CBT screws. |
| PS-TLIF group | Experimental | Procedure: pedicle screwsPatients who are randomised to the PS-TLIF group will have pedicle screws During the opreation. A posterior midline incision, about 6 cm, was performed at the level of interest level under fluoroscopic guidance. Pedicle screws were inserted into the vertebral body by using freehand, and the inferior and superior articular processes and part pf the lamina were removed by using an osteotome. To expose the lateral border of the ipsilateral nerve root, the ligamentum flavum was removed. Afterwards, interbody fusion was performed.Device:traditional pedicle screws. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- Age of at least 18 years;
- All of participants will be informed consent;
- Chronic low back pain (visual analogue scale at least 3 out of 10 at rest and at least 5 out of 10 under physical strain) after having failed conservative treatment for 6 months;
- Single-segment lower lumbar vertebral disease (Including lumbar spinal cannal stenosis, foraminal stenosis, segmental instability, lumbar disc herniation, and painful disc degeneration (back disc);
Key exclusion criteria (11 listed)
- Serious deformity of lumbar vertebrae;
- Dysplasia of lumbar pedicle or vertebral laminar;
- Obvious osteoporosis of lumbar vertebrae;
- Metabolic bone diseases such as osteomalacia or Paget's disease;
- Spondylolisthesis > grade 2 (Meyerding);
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 |
|---|---|---|
| cortical bone trajectory screwscortical bone trajectory screws fixation takes the place of traditional pedicle screws fixation will be used in transforaminal lumbar interbody fusion. | Procedure or surgery | CBT-TLIF group |
| pedicle screwstraditional pedicle screws fixation will be used in transforaminal lumbar interbody fusion. | Procedure or surgery | PS-TLIF group |
Primary outcome
Visual analogue scale(VAS)
Time frame: up to 36 months
pain score
3 secondary outcomes
Oswestry Disability Index (ODI)
Time frame: up to 48 months
Symptomatic adjacent-segment disease (SASD)
Time frame: up to 48 months
Japanese Orthopedic Association (JOA)
Time frame: up to 48 months
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jul 2018.
- Results publication: PubMed 16028736Resnick DK, Choudhri TF, Dailey AT, Groff MW, Khoo L, Matz PG, Mummaneni P, Watters WC 3rd, Wang J, Walters BC, Hadley MN; American Association of Neurological Surgeons/Congress of Neurological Surgeons. Guidelines for the performance of fusion procedures for degenerative disease of the lumbar spine. Part 8: lumbar fusion for disc herniation and radiculopathy. J Neurosurg Spine. 2005 Jun;2(6):673-8. doi: 10.3171/spi.2005.2.6.0673.
- Results publication: PubMed 23978994Brayda-Bruno M, Tibiletti M, Ito K, Fairbank J, Galbusera F, Zerbi A, Roberts S, Wachtel E, Merkher Y, Sivan SS. Advances in the diagnosis of degenerated lumbar discs and their possible clinical application. Eur Spine J. 2014 Jun;23 Suppl 3:S315-23. doi: 10.1007/s00586-013-2960-9. Epub 2013 Aug 27.
- Results publication: PubMed 25187873Omidi-Kashani F, Hasankhani EG, Ashjazadeh A. Lumbar spinal stenosis: who should be fused? An updated review. Asian Spine J. 2014 Aug;8(4):521-30. doi: 10.4184/asj.2014.8.4.521. Epub 2014 Aug 19.
- Results publication: PubMed 17332991Harms JG, Jeszenszky D. Die posteriore, lumbale, interkorporelle Fusion in unilateraler transforaminaler Technik. Oper Orthop Traumatol. 1998 Jun;10(2):90-102. doi: 10.1007/s00064-006-0112-7. No abstract available. German.
- Results publication: PubMed 20975594Rouben D, Casnellie M, Ferguson M. Long-term durability of minimal invasive posterior transforaminal lumbar interbody fusion: a clinical and radiographic follow-up. J Spinal Disord Tech. 2011 Jul;24(5):288-96. doi: 10.1097/BSD.0b013e3181f9a60a.
- Results publication: PubMed 18790684Santoni BG, Hynes RA, McGilvray KC, Rodriguez-Canessa G, Lyons AS, Henson MA, Womack WJ, Puttlitz CM. Cortical bone trajectory for lumbar pedicle screws. Spine J. 2009 May;9(5):366-73. doi: 10.1016/j.spinee.2008.07.008. Epub 2008 Sep 14.
- Results publication: PubMed 24253778Matsukawa K, Yato Y, Kato T, Imabayashi H, Asazuma T, Nemoto K. In vivo analysis of insertional torque during pedicle screwing using cortical bone trajectory technique. Spine (Phila Pa 1976). 2014 Feb 15;39(4):E240-5. doi: 10.1097/BRS.0000000000000116.
- Results publication: PubMed 25099320Baluch DA, Patel AA, Lullo B, Havey RM, Voronov LI, Nguyen NL, Carandang G, Ghanayem AJ, Patwardhan AG. Effect of physiological loads on cortical and traditional pedicle screw fixation. Spine (Phila Pa 1976). 2014 Oct 15;39(22):E1297-302. doi: 10.1097/BRS.0000000000000553.
- Results publication: PubMed 23104197Perez-Orribo L, Kalb S, Reyes PM, Chang SW, Crawford NR. Biomechanics of lumbar cortical screw-rod fixation versus pedicle screw-rod fixation with and without interbody support. Spine (Phila Pa 1976). 2013 Apr 15;38(8):635-41. doi: 10.1097/BRS.0b013e318279a95e.
- Results publication: PubMed 26796712Matsukawa K, Kato T, Yato Y, Sasao H, Imabayashi H, Hosogane N, Asazuma T, Chiba K. Incidence and Risk Factors of Adjacent Cranial Facet Joint Violation Following Pedicle Screw Insertion Using Cortical Bone Trajectory Technique. Spine (Phila Pa 1976). 2016 Jul 15;41(14):E851-E856. doi: 10.1097/BRS.0000000000001459.
- Results publication: PubMed 26097661Kasukawa Y, Miyakoshi N, Hongo M, Ishikawa Y, Kudo D, Shimada Y. Short-Term Results of Transforaminal Lumbar Interbody Fusion Using Pedicle Screw with Cortical Bone Trajectory Compared with Conventional Trajectory. Asian Spine J. 2015 Jun;9(3):440-8. doi: 10.4184/asj.2015.9.3.440. Epub 2015 Jun 8.
- Results publication: PubMed 23303884Chan AW, Tetzlaff JM, Gotzsche PC, Altman DG, Mann H, Berlin JA, Dickersin K, Hrobjartsson A, Schulz KF, Parulekar WR, Krleza-Jeric K, Laupacis A, Moher D. SPIRIT 2013 explanation and elaboration: guidance for protocols of clinical trials. BMJ. 2013 Jan 8;346:e7586. doi: 10.1136/bmj.e7586.
- Individual participant dataSharing planned: Yes. All of the patients' outcomes (without patients' personal information) will be public shared within 2 years after clinical trial complete.
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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.
The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University
Wenzhou, China
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing cortical bone trajectory screws and pedicle screws in people with Spinal Stenosis Lumbar and Lumbar Disc Herniation, run by Second Affiliated Hospital of Wenzhou Medical University at 1 site in China.
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 4 inclusion and 11 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 27 Jul 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
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?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Visual analogue scale(VAS) (time frame: up to 36 months). 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 NCT03105167, which also lists 21 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 27 Jul 2018.