scholarly journals Three-dimensional computer-assisted corrective osteotomy with a patient-specific surgical guide for an antebrachial limb deformity in two dogs

2019 ◽  
Vol 161 (7) ◽  
pp. 473-479 ◽  
Author(s):  
F Longo ◽  
A Penelas ◽  
A Gutbrod ◽  
A Pozzi
Keyword(s):  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Patient Specific ◽  
Computer Assisted ◽  
Limb Deformity ◽  
Surgical Guide

scholarly journals Computer-Assisted Planning and Three-Dimensional-Printed Patient-Specific Instrumental Guide for Corrective Osteotomy in Post-Traumatic Femur Deformity: A Case Report and Literature Review

2018 ◽  
Vol 24 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Lau Chi-Kay ◽  
Chui King-him ◽  
Lee Kin-bong ◽  
Li Wilson
Keyword(s):  
Lower Limb ◽  
New Technologies ◽  
Preoperative Planning ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Patient Specific ◽  
Computer Assisted ◽  
Limb Deformity ◽  
Satisfactory Outcome ◽  
Post Traumatic

Post-traumatic limb deformity is often multiplanar and thus is a difficult pathology to deal with surgically. Precise preoperative planning and accurate intraoperative execution are two main important steps that lead to satisfactory outcome. Computer-assisted planning and three-dimensional-printed patient-specific instrumental guides provide excellent aid to the two steps, respectively. We report a case of posttraumatic lower limb deformity in a patient who underwent closing wedge corrective osteotomy with the aid of the aforementioned new technologies.

scholarly journals Corrective Osteotomy of Upper Extremity Malunions Using Three-Dimensional Planning and Patient-Specific Surgical Guides: Recent Advances and Perspectives

2021 ◽  
Vol 8 ◽  
Author(s):  
Babak Saravi ◽  
Gernot Lang ◽  
Rebecca Steger ◽  
Andreas Vollmer ◽  
Jörn Zwingmann
Keyword(s):  
Range Of Motion ◽  
Upper Extremity ◽  
Therapeutic Approach ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Current Evidence ◽  
Patient Specific ◽  
Computer Assisted ◽  
Surgical Guides ◽  
Recent Advances

Malunions of the upper extremity can result in severe functional problems and increase the risk of osteoarthritis. The surgical reconstruction of complex malunions can be technically challenging. Recent advances in computer-assisted orthopedic surgery provide an innovative solution for complex three-dimensional (3-D) reconstructions. This study aims to evaluate the clinical applicability of 3-D computer-assisted planning and surgery for upper extremity malunions. Hence, we provide a summary of evidence on this topic and highlight recent advances in this field. Further, we provide a practical implementation of this therapeutic approach based on three cases of malunited forearm fractures treated with corrective osteotomy using preoperative three-dimensional simulation and patient-specific surgical guides. All three cases, one female (56 years old) and two males (18 and 26 years old), had painful restrictions in range of motion (ROM) due to forearm malunions and took part in clinical and radiologic assessments. Postoperative evaluation of patient outcomes showed a substantial increase in range of motion, reduction of preoperatively reported pain, and an overall improvement of patients' satisfaction. The therapeutic approach used in these cases resulted in an excellent anatomical and functional reconstruction and was assessed as precise, safe, and reliable. Based on current evidence and our results, the 3-D preoperative planning technique could be the new gold standard in the treatment of complex upper extremity malunions in the future.

Preoperative three-dimensional computer planning for reverse total shoulder arthroplasty and bone grafting for severe glenoid deformity

2020 ◽  
pp. 175857322090890
Author(s):  
Robert Z Tashjian ◽  
Lindsay Beck ◽  
Irene Stertz ◽  
Peter N Chalmers
Keyword(s):  
Shoulder Arthroplasty ◽  
Bone Grafting ◽  
Total Shoulder Arthroplasty ◽  
Three Dimensional ◽  
Reverse Total Shoulder Arthroplasty ◽  
Patient Specific ◽  
Computer Assisted ◽  
Patient Specific Instrumentation ◽  
Reverse Total Shoulder ◽  
Glenoid Erosion

Background Computer assisted planning without patient specific instrumentation may be utilized to guide reverse total shoulder arthroplasty baseplate placement. The purpose of this study was to determine the difference between planned and achieved inclination and retroversion correction with three-dimensional preoperative computer assisted planning in reverse total shoulder arthroplasty without patient specific instrumentation with bone grafting for severe glenoid erosion. Methods Preoperative three-dimensional computer assisted planning without patient specific instrumentation was performed on 15 patients undergoing primary reverse total shoulder arthroplasty with glenoid bone grafting for severe glenoid erosion. On preoperative and immediate postoperative computed tomography slices, two-dimensional retroversion and inclination were measured. Preoperative three-dimensional baseline retroversion and inclination and planned postoperative three-dimensional retroversion and inclination were measured. Planned and achieved version and inclination changes were compared. Results The planned and achieved retroversion corrections were 18° and 12°, respectively (p < 0.001). The planned and achieved inclination corrections were 11° and 11°, respectively (p = 0.803). Conclusions Three-dimensional computer assisted planning without patient specific instrumentation in the setting of reverse total shoulder arthroplasty with severe glenoid erosion requiring bone grafting can accurately guide baseplate placement. All cases in which failure to correct retroversion or inclination within 10° of planning occurred in patients with severe erosion (B3 or E3 glenoids), therefore patient specific guides may be warranted in these cases to improve accuracy of implantation. Level of evidence Level IV, retrospective case series.

Corrective osteotomy for malunion of proximal humerus using a custom-made surgical guide based on three-dimensional computer planning: case report

2017 ◽  
Vol 26 (11) ◽  
pp. e357-e363 ◽  
Author(s):  
Maximiliano Ranalletta ◽  
Agustin Bertona ◽  
Juan M. Rios ◽  
Luciano A. Rossi ◽  
Ignacio Tanoira ◽  
...  
Keyword(s):  
Case Report ◽  
Proximal Humerus ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Surgical Guide ◽  
Custom Made ◽  
Computer Planning

scholarly journals Comparison of Changes in the Condylar Volume and Morphology in Skeletal Class III Deformities Undergoing Orthognathic Surgery Using a Customized versus Conventional Miniplate: A Retrospective Analysis

2020 ◽  
Vol 9 (9) ◽  
pp. 2794
Author(s):  
You Na Lim ◽  
In-Young Park ◽  
Jong-Cheol Kim ◽  
Soo-Hwan Byun ◽  
Byoung-Eun Yang
Keyword(s):  
Conventional Method ◽  
Three Dimensional ◽  
Patient Specific ◽  
Computer Assisted ◽  
Class Iii ◽  
Specific System ◽  
Sagittal Split Ramus Osteotomy ◽  
Skeletal Class ◽  
Surgical Technology ◽  
Significant Difference

With the great leap in the development of three-dimensional computer-assisted surgical technology, surgeons can use a variety of assistive methods to achieve better results and evaluate surgical outcomes in detail. This retrospective study aimed to evaluate the postoperative stability after bilateral sagittal split ramus osteotomy by volume rendering methods and to evaluate how postoperative stability differs depending on the type of surgical plate. Of the patients who underwent BSSRO, ten patients in each group (non-customized miniplate and customized miniplate) who met the inclusion criteria were selected. Preoperative and postoperative cone-beam computed tomography data were collected, and condylar morphological and landmark measurements were obtained using Checkpoint and OnDemand software, respectively. The postoperative condylar morphological dataset revealed no significant difference (p > 0.05) between the two groups. No significant difference (p > 0.05) was observed between the two groups in horizontal, vertical, or angular landmark measurements used to quantify operational stability. These results indicate that there is no difference in the surgical outcome between the patient-specific system and the conventional method, which will allow clinicians to take advantage of the patient-specific system for this surgical procedure, with favorable results, as with the conventional method.

Computer-Assisted Three-Dimensional Corrective Osteotomy for Malunited Fractures of the Distal Radius Using Prefabricated Bone Graft Substitute

2018 ◽  
Vol 23 (04) ◽  
pp. 479-486 ◽  
Author(s):  
Kosuke Shintani ◽  
Kenichi Kazuki ◽  
Masahiro Yoneda ◽  
Takuya Uemura ◽  
Mitsuhiro Okada ◽  
...  
Keyword(s):  
Bone Graft ◽  
Distal Radius ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Bone Graft Substitute ◽  
Computer Assisted ◽  
Mayo Wrist Score ◽  
Sound Side ◽  
Ct Data

Background: Three-dimensional computed tomography (3D-CT) imaging has enabled more accurate preoperative planning. The purpose of this study was to investigate the results of a novel, computer-assisted, 3D corrective osteotomy using prefabricated bone graft substitute to treat malunited fractures of the distal radius. Methods: We investigated 19 patients who underwent the computer-assisted 3D corrective osteotomy for a malunited fracture of the distal radius after the operation was stimulated with CT data. A prefabricated bone graft substitute corresponding to the patient’s bone defect was implanted and internal fixation was performed using a plate and screws. We compared postoperative radiographic parameters of the patient’s operated side with their sound side and analyzed clinical outcomes using Mayo wrist score. Results: All patients achieved bone union on X-ray imaging at final follow-up. The mean differences of palmar tilt, radial inclination and ulnar variance between the operation side and the sound side were 4.3°, 2.3° and 1.2 mm, respectively. The Mayo wrist score was fair in 4 patients and poor in 15 patients before surgery. At the final follow-up after surgery, the scores improved to excellent in 3 patients, good in 11 patients and fair in 5 patients. There were two patients with correction loss at the final follow-up, but no patient complained of hand joint pain. Conclusions: We believe that computer-assisted 3D corrective osteotomy using prefabricated bone graft substitute achieved good results because it worked as a guide to the accurate angle.

scholarly journals Comparison between Novice and Experienced Surgeons Performing Corrective Osteotomy with Patient-Specific Guides in Dogs Based on Resulting Position Accuracy

2021 ◽  
Vol 8 (3) ◽  
pp. 40
Author(s):  
Yoon Ho Rho ◽  
Cheong Woon Cho ◽  
Chang Hun Ryu ◽  
Je Hun Lee ◽  
Seong Mok Jeong ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Corrective Osteotomy ◽  
Three Dimensional ◽  
Patient Specific ◽  
Bone Modeling ◽  
Accuracy Evaluation ◽  
3D Registration ◽  
Rotational Angle ◽  
Significant Difference ◽  
Angular Deformities

Corrective osteotomy has been applied to realign and stabilize the bones of dogs with lameness. However, corrective osteotomy for angular deformities requires substantial surgical experience for planning and performing accurate osteotomy. Three-dimensional printed patient-specific guides (3D-PSGs) were developed to overcome perioperative difficulties. In addition, novices can easily use these guides for performing accurate corrective osteotomy. We compared the postoperative results of corrective osteotomy accuracy when using 3D-PSGs in dogs between novice and experienced surgeons. We included eight dogs who underwent corrective osteotomy: three angular deformities of the radius and ulna, three distal femoral osteotomies, one center of rotational angle-based leveling osteotomy, and one corrective osteotomy with stifle arthrodesis. All processes, including 3D bone modeling, production of PSGs, and rehearsal surgery were carried out with computer-aided design software and a 3D-printed bone model. Pre- and postoperative positions following 3D reconstruction were evaluated by radiographs using the 2D/3D registration technique. All patients showed clinical improvement with satisfactory alignment and position. Postoperative accuracy evaluation revealed no significant difference between novice and experienced surgeons. PSGs are thought to be useful for novice surgeons to accurately perform corrective osteotomy in dogs without complications.

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