We evaluated the effect of a new type of brace (primary material 3300PA) for treating scoliosis, which
was produced based on 3D printing technology combined with a non-contact optical mold-taking and computer-
aided design. Through the production of a brace for a 13-year-old patient with adolescent idiopathic scoliosis
by a multidisciplinary team, the digital design and 3D printing of a personalized scoliosis brace were introduced.
Parameters such as the Cobb angle, angle of trunk inclination, spine-coronal plane balance parameters, sagittal
vertical axis (SVA), and Scoliosis Research Society-22 score (SRS-22) were measured to evaluate the treatment
effect of the brace. The model-taking process of the non-contact optical scanner was successful, data were valid, and
personalized scoliosis brace made by the computer-aided design and 3D printing fitted well with the patient. Before
wearing, immediate in-brace, and 6 months after wearing, the Cobb angles were 29?, 9?, a n d 1 4?, respectively.
The offsets between the C7 vertebra plumb line (C7PL) and central sacral vertical line (CSVL) were 3.2 cm, 2.2
cm, and 2.1 cm, respectively. SVAs were 3.3 cm, 2.9 cm, and 0.3 cm, respectively. Apex vertebral translocations
were 4.3 cm, 0.3 cm, and 0.1 cm, respectively. The SRS-22 was 76 before brace application and 91 at the 6-month
follow-up. The spine curve returned to normal, and the correction effect was obvious. The scoliosis brace indicates
the integration between digital medicine and 3D printing technology, which has personalization and customization
as advantages. The brace has good wearing comfort, invisibility, and orthopedic function, follows the psychological
needs of teenagers, improves patients’ compliance, and improves the correction of the deformity.
LU Dezhi 1,2‡ (鲁德志), LI Wentao1‡ (李文韬), WANG Xiaowen2 (王孝文), SONG Yan2 (宋 艳),
ZHANG Pingping2 (张萍萍), FENG Haiyang2 (冯海洋), WU Yuncheng1 (吴云成), XU Yuanjing3 (许苑晶),
LI Tao4 (李 涛), MA Zhenjiang1∗ (马振江), WANG Jinwu1,2∗ (王金武)
. Case Study of a Personalized Scoliosis Brace Based on 3D Printing[J]. Journal of Shanghai Jiaotong University(Science), 2022
, 27(4)
: 528
-534
.
DOI: 10.1007/s12204-022-2461-2
[1] NEGRINI S, DONZELLI S, AULISA A G, et al. 2016SOSORT guidelines: Orthopaedic and rehabilitation treatment of idiopathic scoliosis during growth [J]. Scoliosis and Spinal Disorders, 2018, 13: 3 .
[2] M C A V I N E Y J , M E E J , F A Z A L B H O Y A , e t a l . A s y s tematic literature review of spinal brace/orthosis treatment for adults with scoliosis between 1967 and 2018:Clinical outcomes and harms data [J]. BMC Musculoskeletal Disorders, 2020, 21(1): 87.
[3] ROYE B D, SIMHON M E, MATSUMOTO H, et al.Establishing consensus on the best practice guidelines for the use of bracing in adolescent idiopathic scoliosis[J]. Spine Deformity, 2020, 8(4): 597-604.
[4] ROMANO M, MINOZZI S, ZAINA F, et al. Exercises for adolescent idiopathic scoliosis: A Cochrane system-atic review [J]. Spine, 2013, 38(14): E883-E893.
[5] LAL H, PATRALEKH M K. 3D printing and its applications in orthopaedic trauma: A technological mar-vel [J]. Journal of Clinical Orthopaedics and Trauma,2018, 9(3): 260-268.
[6] W ANG K, SHI Y T, HE W, et al. The research on 3D printing fingerboard and the initial application oncerebral stroke patient’s hand spasm [J]. Biomedical Engineering Online, 2018, 17(1): 92.
[7] SCHRANK E S, HITCH L, W ALLACE K, et al. Assessment of a virtual functional prototyping process for the rapid manufacture of passive-dynamic ankle-foot orthoses [J]. Journal of Biomechanical Engineering, 2013, 135(10): 101011-101017.
[8] LUNSFORD C, GRINDLE G, SALATIN B, et al.Innovations with 3-dimensional printing in physical medicine and rehabilitation: A review of the literature[J]. PM &R, 2016, 8(12): 1201-1212.
[9] FRANCO A, LANZETTA M, ROMOLI L. Experimental analysis of selective laser sintering of polyamide powders: An energy perspective [J]. Journal of CleanerProduction, 2010, 18(16/17): 1722-1730.
[10] ZHAO M, WUDY K, DRUMMER D. Crystallization kinetics of polyamide 12 during selective laser sintering[J]. Polymers, 2018, 10(2): 168.
[11] KARA VIDAS N. Bracing in the treatment of adolescent idiopathic scoliosis: Evidence to date [J]. Adolescent Health, Medicine and Therapeutics, 2019, 10:153-172.
[12] KAELIN A J. Adolescent idiopathic scoliosis: Indications for bracing and conservative treatments [J]. Annals of Translational Medicine, 2020, 8(2): 28.
[13] DESSERY Y, PALLARI J. Measurements agreement between low-cost and high-level handheld 3D scanners to scan the knee for designing a 3D printed knee brace[J]. PLoS ONE, 2018, 13(1): e0190585.
[14] GRIV AS T B, KASPIRIS A. European braces widely used for conservative scoliosis treatment [J]. Studies in Health Technology and Informatics, 2010, 158: 157-166.
[15] RAHIMI S, KIAGHADI A, F ALLAHIAN N. Effective factors on brace compliance in idiopathic scoliosis: Aliterature review [J]. Disability and Rehabilitation Assistive Technology, 2020, 15(8): 917-923.
[16] COBETTO N, AUBIN C é, PARENT S, et al. 3Dcorrection of AIS in braces designed using CAD/CAMand FEM: A randomized controlled trial [J]. Scoliosisand Spinal Disorders, 2017, 12: 24.
[17] PEA R, DANSEREAU J, CAOUETTE C, et al.Computer-assisted design and finite element simulation of braces for the treatment of adolescent idiopathicscoliosis using a coronal plane radiograph and surface topography [J]. Clinical Biomechanics, 2018, 54: 86-91.
[18] RAJSHEKAR M, JULIAN R, WILLIAMS A M, et al.The reliability and validity of measurements of humandental casts made by an intra-oral 3D scanner, with conventional hand-held digital callipers as the comparison measure [J]. Forensic Science International, 2017,278: 198-204.
[19] SEMINATI E, CANEPA TALAMAS D, YOUNG M,et al. Validity and reliability of a novel 3D scanner for assessment of the shape and volume of amputees’residual limb models [J]. PLoS ONE, 2017, 12(9):e0184498.
[20] WONG M S, CHENG J C Y, LO K H. A comparison of treatment effectiveness between the CAD/CAM method and the manual method for managing adoles-cent idiopathic scoliosis [J]. Prosthetics and OrthoticsI nternational, 2005, 29(1): 105-111.
[21] DESBIENS-BLAIS F, CLIN J, PARENT S, et al. Newbrace design combining CAD/CAM and biomechanical simulation for the treatment of adolescent idiopathicscoliosis [J]. Clinical Biomechanics, 2012, 27(10): 999-1005.
[22] COBETTO N, AUBIN C E, CLIN J, et al. Braces op-timized with computer-assisted design and simulationsare lighter, more comfortable, and more efficient thanplaster-cast braces for the treatment of adolescent idiopathic scoliosis [J]. Spine Deformity, 2014, 2(4): 276-284.
[23] COBETTO N, AUBIN C E, PARENT S, et al. Effec-tiveness of braces designed using computer-aided de-sign and manufacturing (CAD/CAM) and finite ele-ment simulation compared to CAD/CAM only for theconservative treatment of adolescent idiopathic scol-iosis: A prospective randomized controlled trial [J].European Spine Journal, 2016, 25(10): 3056-3064.
[24] DAY S J, RILEY S P. Utilising three-dimensional printing techniques when providing unique assistive devices: A case report [J]. Prosthetics and Orthotics International, 2018, 42(1): 45-49.
