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.

scholarly journals Patient-specific template and electromagnetic navigation assisted bilateral periacetabular osteotomy for staged correction of bilateral injury-induced hip dysplasia: a case report

2021 ◽  
Author(s):  
Peter Brumat ◽  
Rene Mihalič ◽  
Črt Benulič ◽  
Anže Kristan ◽  
Rihard Trebše
Keyword(s):  
Case Report ◽  
Hip Dysplasia ◽  
Periacetabular Osteotomy ◽  
Patient Specific ◽  
Computer Assisted ◽  
Electromagnetic Navigation ◽  
Assisted Navigation ◽  
High Surgical Risk ◽  
Unique Method ◽  
Post Traumatic

ABSTRACT Periacetabular osteotomy (PAO) for pelvic fracture sequelae presents a challenge in hip preservation surgery due to a combination of complex conditions involving post-traumatic altered anatomy and technically demanding procedure, with high surgical risk involved. To address these challenging conditions and evade potential devastating complications, a combination of patient-specific template (PST) and electromagnetic navigation (EMN) guidance can be used to increase the safety of the procedure and the accuracy of the acetabular reorientation. Herein we report our experience utilizing a combined PST- and EMN-assisted bilateral PAO for staged correction of bilateral severe, injury-induced hip dysplasia. The presented case report describes a unique method of successful surgical treatment of severe, bilateral injury-induced hip dysplasia with combined 3-D printing technology (PST) and intra-operative electromagnetic computer-assisted navigation (EMN) aided technically demanding surgical procedure (PAO), which emphasizes the benefits of PST and EMN use in hip preservation surgery in patients with complex pathoanatomic circumstances.

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.

scholarly journals Study on the strategy of three-dimensional anatomy of the duodenum and its surrounding organs

2021 ◽  
Vol 245 ◽  
pp. 03058
Author(s):  
Chengan Feng ◽  
Yan Fan
Keyword(s):  
Bile Ducts ◽  
Medical Technology ◽  
New Technologies ◽  
Preoperative Planning ◽  
Three Dimensional ◽  
Current Medical ◽  
Anatomical Structure ◽  
Multiple Organs ◽  
Solid Foundation ◽  
Visualization Technology

With the development of science and technology, there are constantly new technologies used in medicine, and related medical technologies have also been greatly improved. Anatomy is one of them. This technology has been widely used in clinical practice, but traditional anatomy is evaluated before surgery. There shortcomings, and it is impossible to have a more accurate understanding of the disease. Therefore, improper operation may still cause some problems during the operation, such as bile duct and blood vessel damage, organ failure and other adverse consequences. Duodenum and its surrounding organs are a complex surgical method. Based on the characteristics of the site, it involves multiple organs such as the pancreas, duodenum, and bile ducts. The anatomical structure of the organism is destroyed, and the destroyed structure is artificially constructed to create a highly difficult surgical technique for new physiological channels. With the development of medicine, the application of three-dimensional visualization technology in this operation can accurately measure the pathology of the duodenum and its surrounding organs, and make preoperative planning and planning for the excision of the duodenum and its surrounding organs. The success of the operation plays an important role. This article mainly analyzes the current situation of the anatomy of the duodenum and its surrounding organs under the background of current medical technology, and proposes an idea on how to optimize and enhance the anatomy of the duodenum and its surrounding organs. Series recommendations. And try to find a new way out for the anatomy of the duodenum and its surrounding organs in the current era based on the results of these studies. Experimental research shows that the use of three-dimensional technology can greatly improve the anatomy of the duodenum and its surrounding organs. The use of this technology, combined with the doctor's solid foundation, can greatly improve the success rate of the operation.

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