3D-Printed Cutting Guides for Resection of Long Bone Sarcoma and Intercalary Allograft Reconstruction

Orthopedics ◽  
2021 ◽  
pp. 1-7
Author(s):  
Matthew A. Gasparro ◽  
Charles A. Gusho ◽  
Obianuju A. Obioha ◽  
Matthew W. Colman ◽  
Steven Gitelis ◽  
...  
Keyword(s):  
Bone Sarcoma ◽  
Long Bone ◽  
Allograft Reconstruction ◽  
Cutting Guides ◽  
3D Printed

3D-Printed Custom Cutting Guides Facilitate Frontal Cranioplasty in Gender Affirmation Surgery

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Marc H Hohman ◽  
Meghan E Jastrzembski ◽  
Nicholas Choe ◽  
Michael J Nuara ◽  
Jeffrey C Teixeira ◽  
...  
Keyword(s):  
Gender Affirmation ◽  
Cutting Guides ◽  
3D Printed ◽  
Gender Affirmation Surgery

scholarly journals Form and functional repair of long bone using 3D-printed bioactive scaffolds

2018 ◽  
Vol 12 (9) ◽  
pp. 1986-1999 ◽  
Author(s):  
Nick Tovar ◽  
Lukasz Witek ◽  
Pablo Atria ◽  
Michael Sobieraj ◽  
Michelle Bowers ◽  
...  
Keyword(s):  
Long Bone ◽  
Bioactive Scaffolds ◽  
3D Printed

An Adaptable Ct-Derived 3D-Printed Alignment Fixture Minimizes Errors in Whole-Bone Biomechanical Testing

2021 ◽  
Author(s):  
Jordan V. Inacio ◽  
DanielleM Cristino ◽  
Michael W. Hast ◽  
Hannah Dailey
Keyword(s):  
Computational Models ◽  
Biomechanical Testing ◽  
Ct Scanning ◽  
Industrial Applications ◽  
Long Bone ◽  
Implant Design ◽  
Orthopaedic Implant ◽  
Test Frame ◽  
3D Printed ◽  
The Impact

Abstract Biomechanical testing of long bones can be subject to undesirable errors and uncertainty due to malalignment of specimens with respect to the mechanical axis of the test frame. To solve this problem, we designed a novel, customizable alignment and potting fixture for long bone testing. The fixture consisted of 3D-printed components modeled from specimen-specific CT scans to achieve a predetermined specimen alignment. We demonstrated the functionality of this fixture by comparing benchtop torsional test results to specimen-matched finite element models and found a strong and statistically significant correlation (R2 = 0.9536, p < 0.001). Additional computational models estimated the impact of malalignment on mechanical behavior in both torsion and axial compression. Results confirmed that torsion testing is relatively robust to alignment artifacts, with absolute percent errors less than 8% in all malalignment scenarios. In contrast, axial testing was highly sensitive to setup errors, experiencing absolute percent errors up to 40% with off-center malalignment and up to 130% with angular malalignment. This suggests that whenever appropriate, torsion tests should be used preferentially as a summary mechanical measure. When more challenging modes of loading are required, pre-test clinical-resolution CT scanning can be effectively used to create potting fixtures that allow for precise pre-planned specimen alignment. This may be particularly important for more sensitive biomechanical tests (e.g. axial compressive tests) that may be needed for industrial applications, such as orthopaedic implant design.

3D Printing Guide Plate for Accurate Hemicortical Bone Resection in Low-Grade Bone Sarcoma

2020 ◽  
Author(s):  
Hongwei Wu ◽  
Xian'an Li ◽  
Shuo Yang ◽  
Jie Bu ◽  
Xuezheng Xu ◽  
...  
Keyword(s):  
3D Printing ◽  
Bone Sarcoma ◽  
Long Bone ◽  
Low Grade ◽  
Joint Function ◽  
Bone Resection ◽  
Musculoskeletal Tumor ◽  
Musculoskeletal Tumor Society ◽  
Guide Plate ◽  
Post Operation

Abstract Background: Surgical resection and reconstruction for low grade bone sarcoma in the metaphysis of the long bone remains challenging. We hypothesize that 3D printing osteotomy guide plate could assist to accurately resect the tumor lesion and save the joint function without higher recurrence rate. Methods: From January 2017 to August 2019, ten patients with low-grade malignant bone tumor in metaphysis of the limbs were treated with hemicortical resection using 3D printing guide plate and biological reconstruction. Results: Four patients were paracorticular osteosarcoma, five cases had highly differentiated chondrosarcoma, and one case was a chondromyxoid fibroma. Two of the cases involved the proximal humerus, while eight cases involved the distal femur. There was neither post-operation infection, internal fixation loosening, nor fracture occurrence in any of the patients. The Musculoskeletal Tumor Society score averaged at 27.1, while the International Society of Limb Salvage imaging score examination averaged 87.8%. Conclusions: Here, we demonstrate that the 3D printing osteotomy guide plate assisted hemicortical bone resection is a beneficial strategy to effectively resect the primary low-grade malignant bone tumors in the metaphysis of long bone and restore excellent joint function.

scholarly journals Fibula Graft Cutting Devices: Are 3D-Printed Cutting Guides More Precise than a Universal, Reusable Osteotomy Jig?

2020 ◽  
Vol 9 (12) ◽  
pp. 4119
Author(s):  
Simon Meyer ◽  
Jan-Michaél Hirsch ◽  
Christoph S. Leiggener ◽  
Bilal Msallem ◽  
Guido R. Sigron ◽  
...  
Keyword(s):  
Relative Length ◽  
Point Of View ◽  
Subjective Perception ◽  
Economic Point ◽  
Fibula Graft ◽  
Angle Deviation ◽  
Cutting Guides ◽  
3D Printed ◽  
Cost Efficient ◽  
Jaw Defects

Individual cutting guides for the reconstruction of lower jaw defects with fibular grafts are often used. However, the application of these osteotomy tools is costly and time intensive. The aim of this study was to compare the precision of osteotomies using a 3D-printed guide with those using a universal, reusable, and more cost-efficient Multi-Use Cutting Jig (MUC-Jig). In this non-blinded experimental study, 10 cranio-maxillofacial surgeons performed four graft removals each in a randomized order using the same osteotomy angle, both proximally (sagittal cut) and distally (coronal cut), of a graft (45°, 30°, 15°, or 0°), first with the MUC-Jig then with the 3D-printed cutting guide. The 40 fibula transplants (Tx) of each method (n = 80) were then analyzed concerning their Tx length and osteotomy angles and compared to the original planning data. Furthermore, the surgeons’ subjective perception and the duration of the two procedures were analyzed. The mean relative length and mean relative angle deviation between the MUC-Jig (−0.08 ± 1.12 mm; −0.69° ± 3.15°) and the template (0.22 ± 0.90 mm; 0.36° ± 2.56°) group differed significantly (p = 0.002; p = < 0.001), but the absolute deviations did not (p = 0.206; p = 0.980). Consequently, clinically comparable osteotomy results can be achieved with both methods, but from an economic point of view the MUC-Jig is a more cost-efficient solution.

scholarly journals Allograft reconstruction for bone sarcoma of the tibia in the growing child

2006 ◽  
Vol 88-B (1) ◽  
pp. 95-99 ◽  
Author(s):  
L. E. Ramseier ◽  
T. I. Malinin ◽  
H. T. Temple ◽  
W. A. Mnaymneh ◽  
G. U. Exner
Keyword(s):  
Bone Sarcoma ◽  
Allograft Reconstruction

scholarly journals The Functional Outcomes and Complications of Different Reconstruction Methods for Giant Cell Tumor of the Distal Radius: Comparison of Osteoarticular Allograft and Three-Dimensional-Printed Prosthesis

2020 ◽  
Author(s):  
Yitian Wang ◽  
Li Min ◽  
Minxun Lu ◽  
Yong Zhou ◽  
Jie Wang ◽  
...  
Keyword(s):  
Grip Strength ◽  
Distal Radius ◽  
Functional Outcomes ◽  
Three Dimensional ◽  
Osteoarticular Allograft ◽  
Allograft Reconstruction ◽  
Mayo Score ◽  
3D Printed ◽  
Wrist Function

Abstract Background: En bloc excision has been increasingly used for the management of giant cell tumors(GCTs) in the distal radius. An osteoarticular allograft has been used extensively for decades, and custom-made prosthesis reconstruction has been more recently applied. We aimed to compare the clinical outcomes of the two procedures. Methods: We retrospectively analyzed 30 patients with Campanacci III or recurrent GCTs of the distal radius for follow-up at a mean of 33.2 months. In total, 15 underwent osteoarticular allograft reconstruction (allograft group) and 15 received cementless three-dimensional(3D)-printed prosthesis reconstruction (prosthesis group) between March 18, 2013, and May 20, 2018. All patients underwent by clinical and radiological examinations, including pre- and postoperative active range of motion (ROM) of the wrist, VAS score, grip strength, degenerative change of wrist, Mayo wrist score and Musculoskeletal Tumor Society (MSTS) score. Complications were evaluated using the Henderson classification. Results: Both groups showed significantly increased ROM, grip strength, Mayo score and MSTS score postoperatively. Furthermore, the extension, flexion, MSTS, and Mayo score were significantly higher in the prosthesis group. There was no significant difference in grip strength and VAS between the groups. In allograft group, one patient had a late infection one had resorption of allograft without allograft bone fracture. and four had wrist subluxation. All patients had degenerative changes (mean 9 months). In the prosthesis group, three patients developed wrist subluxation, three had separation of the distal radioulnar joint, and none of the patients developed wrist degeneration. Conclusions: Our study compared the objective functional outcomes and complications of two reconstructive methods for Campanacci III or recurrent GCT in the distal radius. 3D-printed prosthesis replacement can partially preserve wrist function better than allograft reconstruction in the short-term. During the design of 3D-printed prosthesis, preoperative morphological assessment of the affected proximal row carpal is helpful to control postoperative dislocation. After allograft reconstruction, wrist degeneration, which has been demonstrated in all patients, severely influence their wrist function. Therefore, compared to allograft reconstruction, 3D-printed prosthesis reconstruction has irreplaceable advantages at early-stage application, especially in wrist function, however, further studied with a larger number of cases and longer follow-up.

Limb Sparing in Dogs using Individualized 3D-Printed Endoprostheses and Cutting Guides for Distal Radial Osteosarcoma: A Pilot Study

2019 ◽  
Author(s):  
B. Seguin ◽  
C. Pinard ◽  
B. Lussier ◽  
L. Griffin ◽  
F.M. Duerr ◽  
...  
Keyword(s):  
Pilot Study ◽  
Cutting Guides ◽  
3D Printed

scholarly journals Repair of Critical‐Sized Long Bone Defects Using Dipyridamole‐Augmented 3D‐Printed Bioactive Ceramic Scaffolds

2019 ◽  
Vol 37 (12) ◽  
pp. 2499-2507 ◽  
Author(s):  
Lukasz Witek ◽  
Adham M. Alifarag ◽  
Nick Tovar ◽  
Christopher D. Lopez ◽  
Bruce N. Cronstein ◽  
...  
Keyword(s):  
Bone Defects ◽  
Long Bone ◽  
3D Printed ◽  
Bioactive Ceramic

scholarly journals 3D-printed moulds facilitate making an anatomically matched cement spacer for reconstruction long bone defection after resection of tumors of humerous

2018 ◽  
Vol 2 (1) ◽  
pp. 27-31
Author(s):  
Haltao Zhao ◽  
Arun Sigdel ◽  
Xizhi Hou ◽  
Ting Zhang ◽  
Guochuan Zhang ◽  
...  
Keyword(s):  
Proximal Humerus ◽  
Tumor Resection ◽  
Mirror Image ◽  
Long Bone ◽  
Wide Resection ◽  
Cement Spacer ◽  
3D Printed ◽  
Ct Data ◽  
Neo Adjuvant Chemotherapy ◽  
The Right

Background: A nail and cement spacer is one of the option for the reconstruction of the proximal humerus after tumor resection among prosthesis unaffordable patients. However, making the cement spacer anatomically match its replacement remains challenging. Presentation of case: A 12-year-old boy was diagnosed with osteosarcoma in the right proximal humerus by core needle biopsy. After preoperative neo-adjuvant chemotherapy, a wide resection was performed, and the defect was reconstructed with an anatomically matched cement spacer. The cement spacer was fabricated using 3D-printed moulds, which were made according to the mirror image of the left humerus based on CT data. The post-operative course was uneventful, and at the 12-month follow-up, the patient is able to move with only some restriction in abduction and upward lift. The MSTD score was 21. Conclusion: Fabrication of an anatomically matched cement spacer using 3D-printed moulds is a simple, inexpensive, and reproducible procedure for reconstruction complex bone defect.

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