scholarly journals Corrective osteotomy in symptomatic clavicular malunion using computer-assisted 3-D planning and patient-specific surgical guides

2018 ◽  
Vol 15 (2) ◽  
pp. 438-441 ◽  
Author(s):  
Simran Grewal ◽  
Johannes G.G. Dobbe ◽  
Peter Kloen
Keyword(s):  
Corrective Osteotomy ◽  
Patient Specific ◽  
Computer Assisted ◽  
Surgical Guides

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.

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.

Computer-assisted extra-articular distal radius osteotomies using patient-specific surgical guides

10.29007/svbd ◽  
2018 ◽  
Author(s):  
Vasilii Shishkin ◽  
Valeriy Golubev
Keyword(s):  
Distal Radius ◽  
Patient Specific ◽  
Control Group ◽  
Computer Assisted ◽  
X Ray ◽  
Surgical Guides ◽  
Planning Approach ◽  
3D Printed ◽  
Planning Group

Malunions of the distal radius are often treated with correction osteotomies, which can be challenging to perform.In this report, 23 patients with symptomatic distal radius malunions were treated using 3D printed patient-specific surgical guides to facilitate surgery. Patients were compared with a control group of 23 patients that underwent similar surgery with a conventional x-ray planning approach.Postoperatively all patients in the computer-assisted group showed recovery of ROM, with no anatomical abnormalities on x-ray examination. 6 patients in the conventional planning group had reduced ROM with a residual volar tilt on x-ray images.Computer-assisted planning with the use of 3D printed patient-specific surgical guides enhances results of corrective osteotomies of distal radius malunions.

scholarly journals Mandibular Reconstruction Using ProPlan CMF: A Review

2017 ◽  
Vol 1 (1) ◽  
pp. s-0037-1606835 ◽  
Author(s):  
Ryo Sasaki ◽  
Michael Rasse
Keyword(s):  
Computer Assisted Surgery ◽  
Mandibular Reconstruction ◽  
Patient Specific ◽  
Computer Assisted ◽  
Planning Service ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Surgical Guides ◽  
Computer Aided

ProPlan CMF (Depuy Synthes, Solothurn, Switzerland, and Materialise, Leuven, Belgium) is a computer-aided surgical virtual planning service using an online meeting with professional medical engineers and transfers patient-specific surgical guide to the virtual plan. Moreover, prebent reconstruction plates or patient-specific computer-aided manufacturing-fabricated reconstruction can also be used. This service started in 2011. Currently, it is widely used in Europe. Current status of mandibular reconstruction with ProPlan CMF vertical planning service with the surgical guide was reviewed. The accuracy was excellent in terms of contact of the osteotomized parts and the contact to the remaining skeleton. The authors found that currently, a small number of reports regarding the mandibular reconstruction with virtual planning service and surgical guides are available. These reports also have a small number of cases and short-term follow-up results. In this situation, this review revealed that (1) mainly the resection guides, cutting guides, and patient-specific mandible reconstruction plates were adequately well fitted to the surgical site intraoperatively, (2) the ischemic time might be more reduced than that of the conventional surgery (3) the accuracy of computer-assisted surgery in the mandibular reconstruction was clinically acceptable, and (4) condyle positions after the computer-assisted surgery was mainly normal. The higher additional cost than that of the conventional technique is presently an issue. Large-scale clinical studies and long-term follow-up studies are demanded.

Corrective Osteotomy for Malunited Diaphyseal Forearm Fractures Using Preoperative 3-Dimensional Planning and Patient-Specific Surgical Guides and Implants

2017 ◽  
Vol 42 (10) ◽  
pp. 836.e1-836.e12 ◽  
Author(s):  
Ann-Maria Byrne ◽  
Bianca Impelmans ◽  
Veronique Bertrand ◽  
Annemieke Van Haver ◽  
Frederik Verstreken
Keyword(s):  
Corrective Osteotomy ◽  
Patient Specific ◽  
Forearm Fractures ◽  
3 Dimensional ◽  
Surgical Guides

scholarly journals Outcomes of 3-D corrective osteotomies for paediatric malunited both-bone forearm fractures

2021 ◽  
pp. 175319342110295
Author(s):  
Kasper C. Roth ◽  
Eline M. van Es ◽  
Gerald A. Kraan ◽  
Jan A. N. Verhaar ◽  
Filip Stockmans ◽  
...  
Keyword(s):  
Linear Regression Analysis ◽  
Corrective Osteotomy ◽  
Primary Outcome Measure ◽  
Patient Specific ◽  
Multivariate Linear Regression Analysis ◽  
Forearm Fractures ◽  
Level Of Evidence ◽  
Surgical Guides ◽  
Closed Treatment

Closed treatment of paediatric diaphyseal forearm fractures carries the risk of re-displacement, which can lead to symptomatic malunions. This is because growth will not correct angulation deformity as it does in metaphyseal fractures. The purpose of this prospective cohort study was to evaluate the outcomes after 3-D-planned corrective osteotomy with patient-specific surgical guides for paediatric malunited forearm fractures causing impaired pro-supination. Our primary outcome measure was the gain in pro-supination at 12 months follow-up. Fifteen patients with a mean age at trauma of 9.6 years and time until osteotomy of 5.9 years were included. Preoperatively, patients displayed a mean pro-supination of 67° corresponding to 44% of the contralateral forearm. At final follow-up, this improved to 128°, achieving 85% of the contralateral side. Multivariate linear regression analysis revealed that predictors of greater functional gain after 3-D corrective osteotomy are severe preoperative impairment in pro-supination, shorter interval until 3-D corrective osteotomy and greater angulation of the radius. Level of evidence: III

Computer-Assisted Virtual Planning for Surgical Guide Manufacturing and Internal Distractor Adaptation in the Management of Midface Hypoplasia in Cleft Patients

2017 ◽  
Vol 54 (4) ◽  
pp. 457-464 ◽  
Author(s):  
Paolo Scolozzi ◽  
Georges Herzog
Keyword(s):  
Computer Aided Design ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Patient Specific ◽  
Computer Assisted ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Patient Specific Implants ◽  
Surgical Guides ◽  
Computer Aided

We are reporting the treatment of severe maxillary hypoplasia in two patients with unilateral cleft lip and palate by using a specific approach combining the Le Fort I distraction osteogenesis technique coupled with computer-aided design/computer-aided manufacturing customized surgical guides and internal distractors based on virtual computational planning. This technology allows for the transfer of the virtual planned reconstruction to the operating room by using custom patient-specific implants, surgical splints, surgical cutting guides, and surgical guides to plate or distractor adaptation.

Computer Assisted Guided Placement of IMF Screws in Craniomaxillofacial Trauma: An Evolving Technique

FACE ◽  
2021 ◽  
pp. 273250162110086
Author(s):  
Joseph Kamal Muhammad
Keyword(s):  
Maxillofacial Surgery ◽  
Operation Time ◽  
Technical Note ◽  
Patient Specific ◽  
Computer Assisted ◽  
Intermaxillary Fixation ◽  
Surgical Guides ◽  
Craniomaxillofacial Trauma ◽  
Potential Benefits ◽  
Maxilla And Mandible

Intermaxillary fixation (IMF) screws have been introduced into maxillofacial trauma practice to reduce operation time and the complications associated with the placement of wire ligatures around teeth. Wires continue to be used to secure arch bars to teeth, form eyelets and long ligatures prior to putting a patient into maxillomandibular fixation (MMF). The application of wires to dental arches may result in sharp injuries to the operator, whereas injury to roots and nerves may arise from incorrect positioning of IMF screws in the jaws. The purpose of this technical note is to demonstrate how 3D patient specific (PS) surgical guides can be planned and fabricated to assist in the safe placement of IMF screws in the maxilla and mandible. It is proposed that PS IMF screw guides can be further developed to incorporate removable spoons and semi-circular access ports that not only facilitate safe screw placement but allow the guide to remain in position until all screw are secured. The potential benefits of PS IMF surgical guides include diminished risk of injury to facial structures and reduced operation time. The technique also lends itself to the placement of IMF screws via a robotic arm contributing to a safer operating environment for the maxillofacial surgery team.

scholarly journals A 3D printed cast for minimally invasive transfer of distal radius osteotomy: a cadaver study

2021 ◽  
Author(s):  
G. Caiti ◽  
J. G. G. Dobbe ◽  
S. D. Strackee ◽  
M. H. M. van Doesburg ◽  
G. J. Strijkers ◽  
...  
Keyword(s):  
Distal Radius ◽  
Corrective Osteotomy ◽  
Cadaver Study ◽  
Normal Weight ◽  
Patient Specific ◽  
Navigation Systems ◽  
Surgical Guides ◽  
Osteosynthesis Material ◽  
3D Printed ◽  
Guiding System

Abstract Purpose In corrective osteotomy of the distal radius, patient-specific 3D printed surgical guides or optical navigation systems are often used to navigate the surgical saw. The purpose of this cadaver study is to present and evaluate a novel cast-based guiding system to transfer the virtually planned corrective osteotomy of the distal radius. Methods We developed a cast-based guiding system composed of a cast featuring two drilling slots as well as an external cutting guide that was used to orient the surgical saw for osteotomy in the preoperatively planned position. The device was tested on five cadaver specimens with different body fat percentages. A repositioning experiment was performed to assess the precision of replacing an arm in the cast. Accuracy and precision of drilling and cutting using the proposed cast-based guiding system were evaluated using the same five cadaver arms. CT imaging was used to quantify the positioning errors in 3D. Results For normal-weight cadavers, the resulting total translation and rotation repositioning errors were ± 2 mm and ± 2°. Across the five performed surgeries, the median accuracy and Inter Quartile Ranges (IQR) of pre-operatively planned drilling trajectories were 4.3° (IQR = 2.4°) and 3.1 mm (IQR = 4.9 mm). Median rotational and translational errors in transferring the pre-operatively planned osteotomy plane were and 3.9° (IQR = 4.5°) and 2.6 mm (IQR = 4.2 mm), respectively. Conclusion For normal weight arm specimens, navigation of corrective osteotomy via a cast-based guide resulted in transfer errors comparable to those using invasive surgical guides. The promising positioning capabilities justify further investigating whether the method could ultimately be used in a clinical setting, which could especially be of interest when used with less invasive osteosynthesis material.

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