Screw Length Optimization of a Volar Locking Plate Using Three Dimensional Preoperative Planning in Distal Radius Fractures

Totoki, Yasukazu; Yoshii, Yukie; Kusakabe, Takuya; Akita, Kenichi; Ishii, Tomoo

doi:10.1142/s2424835518500522

Cited by 12 publications

(21 citation statements)

References 23 publications

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“…We compared the main parameters in preoperative planning with those in postoperative CT and found there was a high consistency of the 8 main parameters (p>0.05), which demonstrated that the effectiveness and reliability of the CAPP process and its intraoperative application. In fact, the accuracy and reliability of the similar process of CAPP from the preoperative planning to the real-time operation has been proved in other research [41][42][43][44]. The mean (SD) errors of the most commonly observed parameters between preoperative planning and postoperative CT were small and acceptable in these studies.…”

Section: Discussionmentioning

confidence: 66%

Computer-Based 3D Simulations to Formulate Preoperative Planning of Bridge Crane Technique for Thoracic Ossification of the Ligamentum Flavum

Chen

Jia

et al. 2019

Med Sci Monit

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BackgroundThe bridge crane technique is a novel surgical technique for the treatment of thoracic ossification of the ligamentum flavum (TOLF), but its preoperative planning has not been studied well, which limits the safety and efficacy of surgery to some extent. The purpose of this study was to investigate the method of application and effect of computer-aided preoperative planning (CAPP) on the bridge crane technique for TOLF.Material/MethodsThis retrospective multi-center included 40 patients with TOLF who underwent the bridge crane technique from 2016 to 2018. According to the utilization of CAPP, patients were divided into Group A (with CAPP, n=21) and Group B (without CAPP, n=19). Comparisons of clinical and radiological outcomes were carried out between the 2 groups.ResultsThe patients in Group A had higher post-mJOA scores and IR of neurological function than those in Group B (p<0.05). Group A had shorter surgery time, fewer fluoroscopic images, and lower incidence of complications than Group B. In Group A, there was a high consistency of all the anatomical parameters between preoperative simulation and postoperative CT (p>0.05). In Group B, there were significant differences in 3 anatomical parameters between postoperative simulation and postoperative CT (p<0.05). In Group B, the patients with no complications had higher post-SVOR and lower SVRR and height of posterior suspension of LOC in postoperative CT than those in postoperative simulation (p<0.05).ConclusionsCAPP can enable surgeons to control the decompression effect accurately and reduce the risk of related complications, which improves the safety and efficacy of surgery.

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Section: Discussionmentioning

confidence: 66%

Computer-Based 3D Simulations to Formulate Preoperative Planning of Bridge Crane Technique for Thoracic Ossification of the Ligamentum Flavum

Chen

Jia

et al. 2019

Med Sci Monit

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“…This study protocol was approved by Institutional Review Board (ethical committee of Tokyo Medical University Ibaraki Medical Center, No. [14][15][16][17][18][19][20][21]. This study was registered as NCT04349319 at ClinicalTrials.gov (registered 15 April, 2020retrospectively registered).…”

Section: Abbreviationsmentioning

confidence: 99%

“…In the field of orthopedic surgery, it is becoming more common to introduce computer-aided technology [11][12][13][14][15][16][17]. Regarding 3D preoperative planning for fracture management, there have been some attempts to prepare a preoperative plan for osteosynthesis by creating 3D models or 3D images of fracture parts [16][17][18][19][20][21]. In complicated fracture patterns, such as pelvic fractures, 3D models were useful for determining surgical approaches and reduction techniques and appropriate internal fixation [16].…”

Section: Introductionmentioning

confidence: 99%

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Development of three-dimensional preoperative planning system for the osteosynthesis of distal humerus fractures

et al. 2020

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Background: To reproduce anatomical reduction and appropriate implant placement/choices during osteosynthesis for elbow fractures, we developed a 3D preoperative planning system. To assess the utility of 3D digital preoperative planning for the osteosynthesis of distal humerus fractures, we evaluated the reproducibility of implant reduction shapes and placements in patients with distal humerus fractures. Methods: Twelve patients with distal humerus fractures who underwent osteosynthesis using 3D preoperative planning were evaluated. Reduction shapes were evaluated by the angle between the diaphysis axis and a line connecting the vertices of the medial epicondyle and the lateral epicondyle (epicondyle angle), and the angle between the diaphysis axis and the articular surface (joint angle) in the coronal plane, and the distance between the anterior diaphysis and the anterior articular surface in the sagittal plane (anterior distance) based on 3D images of the distal humerus. In addition, the implant positions were evaluated by the positions of the proximal and posterior edge of the plate, and the angle of the plate to the epicondyle line. The reproducibility was evaluated by intra-class correlation coefficients of the parameters between pre-and postoperative images. Results: The intra-class correlation coefficients were 0.545, 0.802, and 0.372 for the epicondyle angle, joint angle, and anterior distance, respectively. The differences in the measurements between the preoperative plan and postoperative reduction were 2.1 ± 2.1 degrees, 2.3 ± 1.8 degrees, and 2.8 ± 2.0 mm, for the epicondyle angle, joint angle, and anterior distance, respectively. The intra-class correlation coefficients were 0.983, 0.661, and 0.653 for the proximal and posterior plate positions, and the angle to the epicondyle, respectively. The differences in the measurements between the preoperative plan and postoperative reduction were 3.3 ± 2.1 mm, 2.7 ± 1.7 mm and 9.7 ± 9.8 degrees, for the plate positions of proximal and posterior edge, and the angle of the plate to the epicondyle line, respectively. There were significant correlations for the epicondyle angle, joint angle, and plate positions. Conclusions: 3D preoperative planning for osteosynthesis of distal humerus fracture was reproducible for the reduction shape of the coronal view and the plate positions.

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“…Preoperative computerised surgical planning can improve diagnostic quality and treatment outcome 1 . For the treatment of forearm bone injuries and pathologies such as instability 2,3 , fractures 4 and tumours 5 , the need for computerised planning has been widely reported [6][7][8][9][10][11][12][13][14] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of CT‐MR image registration methodologies for 3D preoperative planning of forearm surgeries

Gerber

Carrillo

Abegg

et al. 2020

Journal Orthopaedic Research

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Computerised surgical planning for forearm procedures that considers both soft and bony tissue, requires alignment of preoperatively acquired computed tomography (CT) and magnetic resonance (MR) images by image registration. Normalised mutual information (NMI) registration techniques have been researched to improve efficiency and to eliminate the user dependency associated with manual alignment. While successfully applied in various medical fields, application of NMI registration to images of the forearm, for which the relative pose of the radius and ulna likely differs between CT and MR acquisitions, is yet to be described. To enable the alignment of CT and MR forearm data, we propose an NMI-based registration pipeline, which allows manual steering of the registration algorithm to the desired image subregion and is, thus, applicable to the forearm. Successive automated registration is proposed to enable planning incorporating multiple target anatomical structures such as the radius and ulna. With respect to gold-standard manual registration, the proposed registration methodology achieved mean accuracies of 0.08 ± 0.09 mm (0.01 -0.41 mm range) in comparison to 0.28 ± 0.23 mm (0.03 -0.99 mm range) associated with a landmark-based registration when tested on 40 patient datasets. Application of the proposed registration pipeline required less than 10 minutes on average compared to 20 minutes required by the landmark-based registration. The clinical feasibility and relevance of the method were tested on two different clinical applications, a forearm tumour resection and radioulnar joint instability analysis, obtaining accurate and robust CT-MR image alignment for both cases.

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Screw Length Optimization of a Volar Locking Plate Using Three Dimensional Preoperative Planning in Distal Radius Fractures

Cited by 12 publications

References 23 publications

Computer-Based 3D Simulations to Formulate Preoperative Planning of Bridge Crane Technique for Thoracic Ossification of the Ligamentum Flavum

Computer-Based 3D Simulations to Formulate Preoperative Planning of Bridge Crane Technique for Thoracic Ossification of the Ligamentum Flavum

Development of three-dimensional preoperative planning system for the osteosynthesis of distal humerus fractures

Evaluation of CT‐MR image registration methodologies for 3D preoperative planning of forearm surgeries

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