A 3D-Printed Personalized, Combined, Modular Pedicle Subtraction Osteotomy Guide Plate System

Spine ◽  
2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Xin Xin ◽  
Fumin Wang ◽  
Xinxin Liu
Keyword(s):  
Pedicle Subtraction Osteotomy ◽  
Guide Plate ◽  
3D Printed ◽  
Plate System

scholarly journals 3D Printed Personalized Guide Plate in the Femoral Head Core Decompression

2020 ◽  
Vol 2020 ◽  
pp. 1-5
Author(s):  
Liangliang Cheng ◽  
Xing Qiu ◽  
Lei Yang ◽  
Chi Xiao ◽  
Baoyi Liu ◽  
...  
Keyword(s):  
Femoral Head ◽  
Three Dimensional ◽  
Core Decompression ◽  
Operation Time ◽  
Drill Hole ◽  
Needle Insertion ◽  
Pathological Examination ◽  
Anatomic Structure ◽  
Guide Plate ◽  
3D Printed

Objective. To investigate the feasibility of using 3D printed personalized guide plates in core decompression procedures for the treatment of osteonecrosis of the femoral head (ONFH). Methods. The clinical data of 8 patients undergoing femoral head core decompression from January to December 2019 were analyzed retrospectively. Three-dimensional (3D) images of the patients were reconstructed from the CT scan data taken preoperatively. From the data obtained, puncture position, drill hole, and depth were evaluated, and individualized 3D puncture guide plates were designed using Mimics 21.0 software. During the operation, the needle went through the hole of the guide plate, the depth of the drill was controlled, and the obtained bone tissues were sent for pathological evaluation. Intraoperative X-ray and postoperative pathological results were used to evaluate the success of the puncture. Results. The individualized guide plates used for core compression on the 8 patients were well fitted with the anatomic structure of the puncture site, and the direction and depth of the needle insertion were consistent with the preoperative design. The operation time was about 15-22 mins. The position of the decompression tunnel was the same as the designed plate. The postoperative pathology showed necrotic bone tissue. There were no postoperative complications such as infection, bleeding, and fracture. Conclusion. The 3D printed individualized guide plate can simplify core decompression and would make this procedure more accurate, safe, and quick, in addition to obtaining necrotic tissues for pathological examination.

scholarly journals A Novel 3D-Printed Device for Precise Percutaneous Placement of Cannulated Compression Screws in Human Femoral Neck Fractures

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Cheng Long ◽  
Jin-hai Liu ◽  
Xiang-ping Chai ◽  
Xiang-feng Liu ◽  
Zhi-xi Duan
Keyword(s):  
3D Printing ◽  
Femoral Neck ◽  
Proximal Femur ◽  
Computer Aided Design ◽  
Femoral Neck Fractures ◽  
X Ray ◽  
Guide Plate ◽  
Computer Aided ◽  
3D Printed ◽  
Aided Design

Background. The aim of this study was to investigate the application of computer-aided design and 3D printing technology for percutaneous fixation of femoral neck fractures using cannulated compression screws. Methods. Using computed tomography data, an individualized proximal femur model was created with a 3D printer. The reduction of the femoral neck fracture and the placement of the cannulated compression screws were simulated on a computer. A 3D printing guide plate was designed to match the proximal femur. After demonstrating the feasibility of the 3D model before the surgical procedure, the guide needles and cannulated compression screws were inserted with the aid of the 3D-printed guide plate. Results. During the procedure, the 3D-printed guide plate for each patient matched the bone markers of the proximal femur. With the aid of the 3D-printed guide plate, three cannulated compression screws were accurately inserted into the femoral neck to treat femoral neck fractures. After screw placement, intraoperative X-ray examination showed results that were consistent with the preoperative design. The time taken to complete the procedure in the guide plate group was 35.3 ± 2.1   min , the intraoperative blood loss was 6.3 ± 2.8   mL , and X-ray fluoroscopy was only performed 9.1 ± 3.5 times. Postoperative radiographs showed adequate reduction of the femoral neck fractures. The entry point, entry direction, and length of the three cannulated compression screws were consistent with the preoperative design, and the screws did not penetrate the bone cortex. Conclusion. Using computer-aided design and 3D printing technology, personalized and accurate placement of cannulated compression screws can be realized for the treatment of femoral neck fractures. This technique can shorten the time required for the procedure and reduce damage to the femoral neck cortex, intraoperative bleeding, and the exposure of patients and healthcare staff to radiation.

scholarly journals Attractive, Informative, and Communicative Robot System on Guide Plate as an Attendant with Awareness of User’s Gaze

2013 ◽  
Vol 4 (2) ◽  
Author(s):  
Tomoko Yonezawa ◽  
Hirotake Yamazoe ◽  
Akira Utsumi ◽  
Shinji Abe
Keyword(s):  
Joint Attention ◽  
Empirical Studies ◽  
Robot System ◽  
Gaze Tracking ◽  
Tracking Method ◽  
Communicative Behaviors ◽  
The Gaze ◽  
Interactive Display ◽  
Guide Plate ◽  
Plate System

AbstractIn this paper, we introduce an interactive guide plate system by adopting a gaze-communicative stuffed-toy robot and a gaze-interactive display board. An attached stuffed-toy robot on the system naturally show anthropomorphic guidance corresponding to the user’s gaze orientation. The guidance is presented through gaze-communicative behaviors of the stuffed-toy robot using joint attention and eye-contact reactions to virtually express its own mind in conjunction with b) vocal guidance and c) projection on the guide plate. We adopted our image-based remote gaze-tracking method to detect the user’s gazing orientation. The results from both empirical studies by subjective / objective evaluations and observations of our demonstration experiments in a semipublic space show i) the total operation of the system, ii) the elicitation of user’s interest by gaze behaviors of the robot, and iii) the effectiveness of the gaze-communicative guide adopting the anthropomorphic robot.

scholarly journals Application of 3D printed osteotomy guide plate-assisted total knee arthroplasty in treatment of valgus knee deformity

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Zhimin Shen ◽  
Hong Wang ◽  
Yiqiang Duan ◽  
Jian Wang ◽  
Fengyan Wang
Keyword(s):  
Total Knee Arthroplasty ◽  
Treatment Group ◽  
Knee Arthroplasty ◽  
Combined Treatment ◽  
Operation Time ◽  
Valgus Knee ◽  
Guide Plate ◽  
Knee Deformity ◽  
3D Printed ◽  
Total Knee

Abstract Introduction To analyze the application of 3D printed osteotomy guide plate-assisted total knee arthroplasty (TKA) for valgus knee deformity. Methods The clinical data of 20 patients with valgus knee deformity admitted to our hospital from April 2012 to April 2017 were collected and analyzed. According to the treatment method, these patients were divided into two groups: 3D printed osteotomy guide plate-assisted TKA (combined treatment group, n = 10) and TKA (treatment group, n = 10). The operation time, intraoperative bleeding volume, postoperative mean femorotibial angle (MFTA), and Knee Society Score (KSS) of the two groups were statistically analyzed. Results Compared with the treatment group, the operation time was significantly shorter (P < 0.05), the intraoperative blood loss and postoperative MFTA were significantly decreased (P < 0.05), and the clinical and functional scores were significantly increased (P < 0.05) in the combined treatment group. Conclusion 3D printed osteotomy guide plate-assisted TKA for valgus knee deformity is more effective than TKA alone.

3D-printed Recoverable Microdrive and Base Plate System for Rodent Electrophysiology

BIO-PROTOCOL ◽  
2021 ◽  
Vol 11 (16) ◽  
Author(s):  
Mihaly Voroslakos ◽  
Hiroyuki Miyawaki ◽  
Sebastien Royer ◽  
Kamran Diba ◽  
Euisik Yoon ◽  
...  
Keyword(s):  
Base Plate ◽  
3D Printed ◽  
Plate System

scholarly journals Complicated Postoperative Flat Back Deformity Correction With the Aid of Virtual and 3D Printed Anatomical Models: Case Report

2021 ◽  
Vol 8 ◽  
Author(s):  
Jennifer Fayad ◽  
Mate Turbucz ◽  
Benjamin Hajnal ◽  
Ferenc Bereczki ◽  
Marton Bartos ◽  
...  
Keyword(s):  
Case Report ◽  
Physical Model ◽  
Similarity Index ◽  
Deformity Correction ◽  
Vertical Axis ◽  
Pedicle Subtraction Osteotomy ◽  
Patient Specific ◽  
Sagittal Vertical Axis ◽  
Number Of Patients ◽  
3D Printed

Introduction: The number of patients with iatrogenic spinal deformities is increasing due to the increase in instrumented spinal surgeries globally. Correcting a deformity could be challenging due to the complex anatomical and geometrical irregularities caused by previous surgeries and spine degeneration. Virtual and 3D printed models have the potential to illuminate the unique and complex anatomical-geometrical problems found in these patients.Case Presentation: We present a case report with 6-months follow-up (FU) of a 71 year old female patient with severe sagittal and coronal malalignment due to repetitive discectomy, decompression, laminectomy, and stabilization surgeries over the last 39 years. The patient suffered from severe low back pain (VAS = 9, ODI = 80). Deformity correction by performing asymmetric 3-column pedicle subtraction osteotomy (PSO) and stabilization were decided as the required surgical treatment. To better understand the complex anatomical condition, a patient-specific virtual geometry was defined by segmentation based on the preoperative CT. The geometrical accuracy was tested using the Dice Similarity Index (DSI). A complex 3D virtual plan was created for the surgery from the segmented geometry in addition to a 3D printed model.Discussion: The segmentation process provided a highly accurate geometry (L1 to S2) with a DSI value of 0.92. The virtual model was shared in the internal clinical database in 3DPDF format. The printed physical model was used in the preoperative planning phase, patient education/communication and during the surgery. The surgery was performed successfully, and no complications were registered. The measured change in the sagittal vertical axis was 7 cm, in the coronal plane the distance between the C7 plumb line and the central sacral vertical line was reduced by 4 cm. A 30° correction was achieved for the lumbar lordosis due to the PSO at the L4 vertebra. The patient ODI was reduced to 20 points at the 6-months FU.Conclusions: The printed physical model was considered advantageous by the surgical team in the pre-surgical phase and during the surgery as well. The model was able to simplify the geometrical problems and potentially improve the outcome of the surgery by preventing complications and reducing surgical time.

3D Printed Models for Surgical Planning and Reconstructive Implant Design in Sphenoorbital Tumor Surgery

2016 ◽  
Vol 77 (S 02) ◽  
Author(s):  
Hassan Othman ◽  
Sam Evans ◽  
Daniel Morris ◽  
Saty Bhatia ◽  
Caroline Hayhurst
Keyword(s):  
Surgical Planning ◽  
Implant Design ◽  
Tumor Surgery ◽  
3D Printed
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