Computer-assisted surgery planning for lower extremity deformity correction by the Ilizarov method

Author(s):  
Hong Lin ◽  
John G. Birch ◽  
Mikhail L. Samchukov ◽  
Richard B. Ashman
1995 ◽  
Vol 1 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Hong Lin ◽  
John G. Birch ◽  
Mikhail L. Samchukov ◽  
Richard B. Ashman

2013 ◽  
Vol 787 ◽  
pp. 947-953
Author(s):  
Huan Wen Ding ◽  
Qiang Tu ◽  
Hong Wang ◽  
Hui Liang Liu ◽  
Jian Jian Shen ◽  
...  

Background: To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Methods: Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an osteotomy method was selected. Computer-assisted design (CAD) was used to produce an individualized auxiliary osteotomy template for guiding the osteotomy and an auxiliary correction template for guiding correction surgery. Finally, we accurately performed surgery according to the preoperative design. Results: All surgeries were performed successfully and postoperative x-ray films showed satisfactory deformity correction. Conclusions: Computer-aided lower-extremity joint correction surgery is more accurate and convenient than conventional surgery.


2016 ◽  
Vol 51 (11) ◽  
pp. 1801-1806 ◽  
Author(s):  
Steven W. Warmann ◽  
Andrea Schenk ◽  
Juergen F. Schaefer ◽  
Martin Ebinger ◽  
Gunnar Blumenstock ◽  
...  

2021 ◽  
Vol 55 (3) ◽  
Author(s):  
Juanito S. Javier ◽  
Ruel A. Dela Cruz ◽  
Daniel V. Dungca

Background and Objective. Limb deformity in terms of length discrepancy, angular and rotational deformities are amenable to correction using the Ilizarov method. The corrections can be achieved using the Ortho SUV Frame (OSF), a computer assisted six axes external fixator. Previous studies have reported easier and more accurate deformity correction. In this study, we report on our initial experience and treatment outcomes in using this system. Materials and Methods. This study is a case series of patients where the Ilizarov circular frame was applied and which the deformity correction was carried out using the OSF. Success and accuracy in correction, length of time to correct, number of revisions needed and complications were gathered from a review of medical records. Results. Thirty limbs in twenty nine cases were included in this report. Seventy seven percent (23/30) of the deformities were due to previous trauma. The rest were due to Blounts, infection and tumor. Correction in eighty seven percent (26/30) were achieved using the turning schedule provided by the Ortho SUV application software. Three cases required surgical removal of soft tissue interposition before further correction using the software was achieved. One case with posterior translation underwent closed manipulation. In the end all planned deformity corrections were achieved. Complications included pin tract swelling and erythema in 13% and all resolved either with oral antibiotics alone or combined with surgical release of pin sites under local anesthesia. Conclusion. The Ortho SUV is an effective tool to carry out deformity corrections using the Ilizarov method.


2013 ◽  
Vol 804 ◽  
pp. 174-179
Author(s):  
Huan Wen Ding ◽  
Guang Wen Yu ◽  
Qiang Tu ◽  
Jun Feng Jia ◽  
Jian Jian Shen ◽  
...  

To overcome disadvantages of the older surgical model, we invented a new three-dimensional (3D) correction surgery design after studying computer-aided 3D model analysis. Three-dimensional reconstruction was carried out for computed tomographic (CT) scans of patients with normal bilateral lower extremities; an anatomical model was established; and the normal values of 3D anatomic parameters of the lower-extremity joints were measured with computer assistance. An osteotomy procedure was simulated using a computer, appropriate osteotomy site, and osteotomy angle, and an osteotomy method was selected. Computer-assisted design (CAD) was used to produce an individualized auxiliary osteotomy template for guiding the osteotomy and an auxiliary correction template for guiding correction surgery. Finally, we accurately performed surgery according to the preoperative design. All surgeries were performed successfully and postoperative x-ray films showed satisfactory deformity correction. Computer-aided lower-extremity joint correction surgery is more accurate and convenient than conventional surgery.


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