A Prospective Study of the Safety and Efficacy of 3D-printed Non-rigid Biomimetic Implant in Cervical and Thoracolumbar Spine
NCT ID: NCT05396222
Last Updated: 2025-12-17
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.
NOT_YET_RECRUITING
NA
18 participants
INTERVENTIONAL
2027-01-01
2028-01-01
Brief Summary
Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.
Recently, 3D printed vertebral body replacement has been reported in different disease entities as well, such as tumor, Kümmell's disease in osteoporosis, and spondylosis. 3D printed implant comes with superiority in production of complex geometries and regularity of the fine surface detailed that promote bone ingrowth. Although, 3D-printed titanium vertebra could achieved bone integration in human, a systemic review showed that the subsidence noted in 31.4% of spine surgery with 3D printed implants. In spine surgery, the fixation construct is sufficiently stiff, interbody motion can be reduced, and loading sharing promotes bone fusion. On the other hand, if the reconstruction is too stiff, stress shielding at fusion site occurs. The concept of dynamic fusion, as opposed to rigid fusion, has been demonstrated by an anterior cervical interbody fusion study in porcine model, demonstrating good bone formation, less postfusion stiffness, and a trend to less subsidence.
Thus, we developed a 3D printed, custom-made, biomimetic prosthesis, with non-rigid structure, which has been tested in biomechanical study and porcine model, showing good bone formation and less stiffness as well. Therefore, we proposed a prospective clinical study to investigate safety, subsidence, and fusion of this prosthesis.
Detailed Description
Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.
Conditions
See the medical conditions and disease areas that this research is targeting or investigating.
Study Design
Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.
NA
SINGLE_GROUP
TREATMENT
NONE
Study Groups
Review each arm or cohort in the study, along with the interventions and objectives associated with them.
3D-printed
We developed a 3D printed, custom-made, biomimetic prosthesis, with non-rigid structure, which has been tested in biomechanical study and porcine model, showing good bone formation and less stiffness as well. Therefore, we proposed a prospective clinical study to investigate safety, subsidence, and fusion of this prosthesis.
3D-printed custom-made non-rigid biomimetic implant
We developed a 3D printed, custom-made, biomimetic prosthesis, with non-rigid structure, which has been tested in biomechanical study and porcine model, showing good bone formation and less stiffness as well. Therefore, we proposed a prospective clinical study to investigate safety, subsidence, and fusion of this prosthesis.
Interventions
Learn about the drugs, procedures, or behavioral strategies being tested and how they are applied within this trial.
3D-printed custom-made non-rigid biomimetic implant
We developed a 3D printed, custom-made, biomimetic prosthesis, with non-rigid structure, which has been tested in biomechanical study and porcine model, showing good bone formation and less stiffness as well. Therefore, we proposed a prospective clinical study to investigate safety, subsidence, and fusion of this prosthesis.
Eligibility Criteria
Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.
Inclusion Criteria
2. Patient meet the indication for 1- to 3- level corpectomy, for primary bone tumor at spine, or metastatic tumor at spine.
3. Deficit confirmed by CT, MRI, and X-ray;
4. Pathology level located from C3 to L5.
5. Physically and mentally able and willing to comply with the protocol;
6. Signed informed consent;
7. NTU Spine Multidisciplinary Board confirmed tumor excision surgery is indicated.
8. Life expectancy longer than 6 months (Tokuhashi Scoring System)
Exclusion Criteria
2. More than three vertebrae required corpectomy;
3. Corpectomy levels above C3 and below L5
4. T-score less than -2.5
5. Known allergy to device materials - such as titanium
6. Any diseases or conditions that would preclude accurate clinical evaluation;
7. Daily, high-dose oral and/or inhaled steroid or a history of chronic use of high dose steroids;
8. BMI \> 35
9. Life expectancy less than 6 months - (Tokuhashi Scoring System)
10. The subject has received radiation therapy or chemotherapy at the trial site within one year;
11. Anterior spine surgery has been received at or near the spine surgery site;
12. The subject has systemic infection,or focal vertebral infection or trauma;
13. The subject has endocrine disorders or metabolic disorders known to affect bone formation, such as: Paget's disease, renal osteodystrophy, hypothyroidism;
14. The subject has neuromuscular diseases, those at risk of instability, implant fixation failure or postoperative care complications, including: spina bifida, cerebral palsy, and multiple sclerosis;
15. Osteopenia, osteomyelitis;
16. Pregnant women.
20 Years
79 Years
ALL
No
Sponsors
Meet the organizations funding or collaborating on the study and learn about their roles.
National Taiwan University Hospital
OTHER
Responsible Party
Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.
Principal Investigators
Learn about the lead researchers overseeing the trial and their institutional affiliations.
Fon-Yih Fon-Yih, PhD
Role: PRINCIPAL_INVESTIGATOR
National Taiwan University Hospital
Locations
Explore where the study is taking place and check the recruitment status at each participating site.
National Taiwan University Hospital
Taipei, , Taiwan
Countries
Review the countries where the study has at least one active or historical site.
Central Contacts
Reach out to these primary contacts for questions about participation or study logistics.
Facility Contacts
Find local site contact details for specific facilities participating in the trial.
References
Explore related publications, articles, or registry entries linked to this study.
Bridwell KH, Lenke LG, McEnery KW, Baldus C, Blanke K. Anterior fresh frozen structural allografts in the thoracic and lumbar spine. Do they work if combined with posterior fusion and instrumentation in adult patients with kyphosis or anterior column defects? Spine (Phila Pa 1976). 1995 Jun 15;20(12):1410-8.
Lewandrowski KU, Hecht AC, DeLaney TF, Chapman PA, Hornicek FJ, Pedlow FX. Anterior spinal arthrodesis with structural cortical allografts and instrumentation for spine tumor surgery. Spine (Phila Pa 1976). 2004 May 15;29(10):1150-8; discussion 1159. doi: 10.1097/00007632-200405150-00019.
Dvorak MF, Kwon BK, Fisher CG, Eiserloh HL 3rd, Boyd M, Wing PC. Effectiveness of titanium mesh cylindrical cages in anterior column reconstruction after thoracic and lumbar vertebral body resection. Spine (Phila Pa 1976). 2003 May 1;28(9):902-8. doi: 10.1097/01.BRS.0000058712.88053.13.
Viswanathan A, Abd-El-Barr MM, Doppenberg E, Suki D, Gokaslan Z, Mendel E, Rao G, Rhines LD. Initial experience with the use of an expandable titanium cage as a vertebral body replacement in patients with tumors of the spinal column: a report of 95 patients. Eur Spine J. 2012 Jan;21(1):84-92. doi: 10.1007/s00586-011-1882-7. Epub 2011 Jun 18.
Boriani S, Biagini R, Bandiera S, Gasbarrini A, De Iure F. Reconstruction of the anterior column of the thoracic and lumbar spine with a carbon fiber stackable cage system. Orthopedics. 2002 Jan;25(1):37-42. doi: 10.3928/0147-7447-20020101-14.
Xu N, Wei F, Liu X, Jiang L, Cai H, Li Z, Yu M, Wu F, Liu Z. Reconstruction of the Upper Cervical Spine Using a Personalized 3D-Printed Vertebral Body in an Adolescent With Ewing Sarcoma. Spine (Phila Pa 1976). 2016 Jan;41(1):E50-4. doi: 10.1097/BRS.0000000000001179.
Glennie RA, Rampersaud YR, Boriani S, Reynolds JJ, Williams R, Gokaslan ZL, Schmidt MH, Varga PP, Fisher CG. A Systematic Review With Consensus Expert Opinion of Best Reconstructive Techniques After Osseous En Bloc Spinal Column Tumor Resection. Spine (Phila Pa 1976). 2016 Oct 15;41 Suppl 20:S205-S211. doi: 10.1097/BRS.0000000000001835.
Choy WJ, Mobbs RJ, Wilcox B, Phan S, Phan K, Sutterlin CE 3rd. Reconstruction of Thoracic Spine Using a Personalized 3D-Printed Vertebral Body in Adolescent with T9 Primary Bone Tumor. World Neurosurg. 2017 Sep;105:1032.e13-1032.e17. doi: 10.1016/j.wneu.2017.05.133. Epub 2017 May 31.
Wei F, Li Z, Liu Z, Liu X, Jiang L, Yu M, Xu N, Wu F, Dang L, Zhou H, Li Z, Cai H. Upper cervical spine reconstruction using customized 3D-printed vertebral body in 9 patients with primary tumors involving C2. Ann Transl Med. 2020 Mar;8(6):332. doi: 10.21037/atm.2020.03.32.
Yang X, Wan W, Gong H, Xiao J. Application of Individualized 3D-Printed Artificial Vertebral Body for Cervicothoracic Reconstruction in a Six-Level Recurrent Chordoma. Turk Neurosurg. 2020;30(1):149-155. doi: 10.5137/1019-5149.JTN.25296-18.2.
Girolami M, Boriani S, Bandiera S, Barbanti-Brodano G, Ghermandi R, Terzi S, Tedesco G, Evangelisti G, Pipola V, Gasbarrini A. Biomimetic 3D-printed custom-made prosthesis for anterior column reconstruction in the thoracolumbar spine: a tailored option following en bloc resection for spinal tumors : Preliminary results on a case-series of 13 patients. Eur Spine J. 2018 Dec;27(12):3073-3083. doi: 10.1007/s00586-018-5708-8. Epub 2018 Jul 23.
Dong C, Wei H, Zhu Y, Zhou J, Ma H. Application of Titanium Alloy 3D-Printed Artificial Vertebral Body for Stage III Kummell's Disease Complicated by Neurological Deficits. Clin Interv Aging. 2020 Dec 2;15:2265-2276. doi: 10.2147/CIA.S283809. eCollection 2020.
Wei F, Xu N, Li Z, Cai H, Zhou F, Yang J, Yu M, Liu X, Sun Y, Zhang K, Pan S, Wu F, Liu Z. A prospective randomized cohort study on 3D-printed artificial vertebral body in single-level anterior cervical corpectomy for cervical spondylotic myelopathy. Ann Transl Med. 2020 Sep;8(17):1070. doi: 10.21037/atm-19-4719.
Fang T, Zhang M, Yan J, Zhao J, Pan W, Wang X, Zhou Q. Comparative Analysis of 3D-Printed Artificial Vertebral Body Versus Titanium Mesh Cage in Repairing Bone Defects Following Single-Level Anterior Cervical Corpectomy and Fusion. Med Sci Monit. 2021 Feb 7;27:e928022. doi: 10.12659/MSM.928022.
Girolami M, Sartori M, Monopoli-Forleo D, Ghermandi R, Tedesco G, Evangelisti G, Pipola V, Pesce E, Falzetti L, Fini M, Gasbarrini A. Histological examination of a retrieved custom-made 3D-printed titanium vertebra : Do the fine details obtained by additive manufacturing really promote osteointegration? Eur Spine J. 2021 Oct;30(10):2775-2781. doi: 10.1007/s00586-021-06926-w. Epub 2021 Jul 16.
Wallace N, Schaffer NE, Aleem IS, Patel R. 3D-printed Patient-specific Spine Implants: A Systematic Review. Clin Spine Surg. 2020 Dec;33(10):400-407. doi: 10.1097/BSD.0000000000001026.
Yang SH, Xiao FR, Lai DM, Wei CK, Tsuang FY. A Dynamic Interbody Cage Improves Bone Formation in Anterior Cervical Surgery: A Porcine Biomechanical Study. Clin Orthop Relat Res. 2021 Nov 1;479(11):2547-2558. doi: 10.1097/CORR.0000000000001894.
Other Identifiers
Review additional registry numbers or institutional identifiers associated with this trial.
202202015DIPC
Identifier Type: -
Identifier Source: org_study_id