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Yao QQ, Hu J, Zheng PF, Li JY, Zhou J, Tian SC, Wei B, Xu Y, Wang LM. In vitro evaluation of marrow clot enrichment on microstructure decoration, cell delivery and proliferation of porous titanium scaffolds by selective laser melting three-dimensional printing. J Biomed Mater Res B Appl Biomater 2017; 106:2245-2253. [PMID: 29083526 DOI: 10.1002/jbm.b.34032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 09/09/2017] [Accepted: 09/24/2017] [Indexed: 12/26/2022]
Abstract
Titanium alloy is a clinically approved material for bone substitution. Although three-dimensional printing (3DP) fabrication technique can build up porous Ti scaffolds with the designed shape and microstructure, the biomechanical performance of 3DP Ti scaffolds still need to be improved to increase the reliability of osseointegration capacity. To address this issue, rabbit bone marrow clot (MC) is used to modify 3DP Ti scaffolds by stem cell delivery and microenvironment decoration inside the pores of these scaffolds. Moreover, 3DP Ti scaffolds were built up using selective laser melting, and 3DP MC-Ti scaffolds were constructed through the enrichment of MC with Ti scaffolds in vitro. Results demonstrated that the obtained 3DP Ti scaffolds in current study has an average modulus of elasticity (ME) at 1294.48 MPa with average yield strength of 33.154 MPa. For MC-Ti scaffolds, MC enrichment obstructs the pores of 3DP scaffolds due to the large amount of fibrin and erythrocytes and leads to a decrease in ratio of live cells at 1-week culture. Cell proliferation and osteogenic differentiation performance of MC-Ti scaffolds were promoted with porous recanalization in the later 3 weeks. After 2 weeks in vitro culture, fivefold of cell number in MC-Ti scaffolds were observed than bone marrow-derived mesenchymal stem cell-seeded Ti scaffolds. Compared to Ti scaffolds, fourfold of deoxyribonucleic acid content, type I collagen-α1, osteocalcin, and alkaline phosphatase expression in MC-Ti scaffolds were observed after 4 weeks in vitro culture. Results suggested that the combination with MC is a highly efficient method that improves the biological performance of Ti scaffolds. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2245-2253, 2018.
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Affiliation(s)
- Qing-Qiang Yao
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China.,Clinical Orthopaedic Medical Center of Nanjing Metro, Nanjing First Hospital, Nanjing, China
| | - Jun Hu
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China
| | - Peng-Fei Zheng
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China
| | - Jia-Yi Li
- Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China.,Clinical Orthopaedic Medical Center of Nanjing Metro, Nanjing First Hospital, Nanjing, China
| | - Jin Zhou
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Shu-Chang Tian
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Bo Wei
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China
| | - Yan Xu
- Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China.,Clinical Orthopaedic Medical Center of Nanjing Metro, Nanjing First Hospital, Nanjing, China
| | - Li-Ming Wang
- Department of Orthopaedic surgery, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,Key Lab of Biomaterial and Additive Manufacturing Research, Institute of Digital Medicine, Nanjing Medical University, Nanjing, China.,Clinical Orthopaedic Medical Center of Nanjing Metro, Nanjing First Hospital, Nanjing, China
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Zheng SN, Yao QQ, Mao FY, Zheng PF, Tian SC, Li JY, Yu YF, Liu S, Zhou J, Hu J, Xu Y, Tang K, Lou Y, Wang LM. Application of 3D printing rapid prototyping-assisted percutaneous fixation in the treatment of intertrochanteric fracture. Exp Ther Med 2017; 14:3644-3650. [PMID: 29042960 PMCID: PMC5639369 DOI: 10.3892/etm.2017.4991] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 04/21/2017] [Indexed: 12/14/2022] Open
Abstract
The aim of the present study was to investigate the application of 3D printing (3DP) rapid prototyping (RP) technique-assisted percutaneous fixation in the treatment of femoral intertrochanteric fracture (ITF) using proximal femoral nail anti-rotation (PFNA). A total of 39 patients with unstable ITF were included in the current study. Patients were divided into two groups: 19 patients were examined using computed tomography scanning and underwent PFNA with SDP-RP whereas the other 20 patients underwent conventional PFNA treatment. Anatomical data were converted from the Digital Imaging and Communications in Medicine format to the stereolithography format using M3D software. The 3DP-RP model was established using the fused deposition modeling technique and the length and diameter of the main screw blade was measured during the simulation. The postoperative femoral neck-shaft angle (NSA), surgery duration, intraoperative and postoperative blood loss, and the duration of hospital stay were recorded and compared with the corresponding values in conventional surgery. No significant differences were observed in mean PFNA size between the implants used and the preoperative planning estimates. It was demonstrated that the 3DP-RP assisted procedure resulted in more effective reduction of the NSA. Furthermore, patients undergoing 3DP-RP experienced a significant reduction in duration of surgery (P<0.01), as well as reductions in intraoperative (P=0.02) and postoperative (P=0.03) blood loss, compared with conventional surgery. At 6 months post-surgery, no cases of hip varus/vague deformities or implant failure were observed in patients that underwent either the 3DP-RP-assisted or conventional procedure. The results of the present study suggest that the 3DP-RP technique is able to create an accurate model of the ITF, which facilitates surgical planning and fracture reduction, thus improving the efficiency of PFNA surgery for ITFs.
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Affiliation(s)
- Sheng-Nai Zheng
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Qing-Qiang Yao
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Feng-Yong Mao
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Peng-Fei Zheng
- Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Shu-Chang Tian
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Jia-Yi Li
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Yi-Fan Yu
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Shuai Liu
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Jin Zhou
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Jun Hu
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Yan Xu
- Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Kai Tang
- Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Yue Lou
- Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
| | - Li-Ming Wang
- Department of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Clinical Medical Center of Orthopedic Surgery, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China.,Digital Medicine Institute, Nanjing Medical University, Nanjing Hospital, Nanjing, Jiangsu 210006, P.R. China
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