Computer-aided Preoperative Planning Of Lower Extremity Deformity Correction By The Ilizarov Method

1992 ◽  
Author(s):  
Hong Lin ◽  
Birch ◽  
Samchukov ◽  
Ashman
Keyword(s):  
Lower Extremity ◽  
Preoperative Planning ◽  
Deformity Correction ◽  
Ilizarov Method ◽  
Computer Aided

3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery

2013 ◽  
Vol 787 ◽  
pp. 947-953
Author(s):  
Huan Wen Ding ◽  
Qiang Tu ◽  
Hong Wang ◽  
Hui Liang Liu ◽  
Jian Jian Shen ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Three Dimensional ◽  
Deformity Correction ◽  
Digital Design ◽  
Osteotomy Site ◽  
Computer Assisted ◽  
Computed Tomographic ◽  
Computer Aided ◽  
Dimensional Reconstruction ◽  
Correction Surgery

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.

3D Measurement of Anatomic Parameters and Development of a Digital Design to Improve the Outcome of Lower-Extremity Surgery

2013 ◽  
Vol 804 ◽  
pp. 174-179
Author(s):  
Huan Wen Ding ◽  
Guang Wen Yu ◽  
Qiang Tu ◽  
Jun Feng Jia ◽  
Jian Jian Shen ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Three Dimensional ◽  
Deformity Correction ◽  
Digital Design ◽  
Osteotomy Site ◽  
Computer Assisted ◽  
Computed Tomographic ◽  
Computer Aided ◽  
Dimensional Reconstruction ◽  
Correction Surgery

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.

Computer-Assisted Surgery Planning for Lower Extremity Deformity Correction by the Ilizarov Method

1995 ◽  
Vol 1 (2) ◽  
pp. 103-108 ◽  
Author(s):  
Hong Lin ◽  
John G. Birch ◽  
Mikhail L. Samchukov ◽  
Richard B. Ashman
Keyword(s):  
Lower Extremity ◽  
Deformity Correction ◽  
Computer Assisted Surgery ◽  
Ilizarov Method ◽  
Computer Assisted ◽  
Surgery Planning

scholarly journals The Use of Patient-Specific 3D Printed Titanium Implants for Complex Foot and Ankle Limb Salvage, Deformity Correction, and Arthrodesis Procedures

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0000
Author(s):  
Samuel Adams ◽  
Travis Dekker ◽  
John Steele ◽  
Kamran Hamid
Keyword(s):  
Lower Extremity ◽  
Deformity Correction ◽  
Titanium Implants ◽  
Patient Specific ◽  
Allograft Bone ◽  
Foot And Ankle ◽  
Sf 36 ◽  
3D Printed ◽  
The Mean

Category: Ankle,Ankle Arthritis,Basic Sciences/Biologics,Trauma Introduction/Purpose: Large lower extremity bony defects, complex foot and ankle deformities, and high-risk arthrodesis situations can be difficult to treat. These challenging pathologies, often require a critical-sizes and/or shaped structural bone void filler which may not be available with allograft bone. The advancement of 3D printing technology has allowed for the use of custom designed implants for foot and ankle surgery. This study reports on the radiographic and functional outcomes of a case series of patients treated with patient-specific 3D printed titanium implants. Methods: Seven consecutive patients who were treated with custom designed 3D printed implant cages for severe bone loss, deformity correction, and arthrodesis procedures were included in this study. A minimum of 1-year follow-up was required. No patients were lost to follow-up. Patients completed preoperative and most recent follow-up VAS for pain, FAAM, and SF-36 outcomes questionnaires. All patients had post-operative radiographs and CT scans to assess bony incorporation. Results: The mean age of these patients was 54.6 (35-73 years of age). The mean follow-up of these seven patients was 17.1 months (range 12 to 31). Radiographic fusion with cage ingrowth and integration occurred in all seven patients verified by CT scan. There was statistically significant improvement in all functional outcome score measures (VAS for pain, FAAM, and SF-36). All patients returned were satisfied with surgery. There were no failures. Case examples are demonstrated in Figure 1. Conclusion: This cohort of patients demonstrated the successful use of custom 3D printed implants to treat complex large bony defects, deformities and arthrodesis procedures of the lower extremity. These implants offer the surgeon a patient specific approach to treat both pain and deformity that is not necessarily available with allograft bone.

scholarly journals Growth rate after limb deformity correction by the Ilizarov method with or without knee joint distraction

2009 ◽  
Vol 80 (3) ◽  
pp. 338-343 ◽  
Author(s):  
Hubert J Oostenbroek ◽  
Ronald Brand ◽  
Peter M van Roermund
Keyword(s):  
Growth Rate ◽  
Knee Joint ◽  
Deformity Correction ◽  
Ilizarov Method ◽  
Limb Deformity ◽  
Joint Distraction

scholarly journals A NEW METHOD FOR QUANTIFICATION OF REGENERATED BONE TISSUE ON X-RAY IMAGES OF ELONGATED BONES

2011 ◽  
Vol 22 (3) ◽  
pp. 183 ◽  
Author(s):  
Aneta Gądek ◽  
Leszek Wojnar ◽  
Maciej Tęsiorowski ◽  
Barbara Jasiewicz
Keyword(s):  
External Fixator ◽  
Theoretical Background ◽  
New Method ◽  
Ilizarov Method ◽  
Bone Lengthening ◽  
X Ray ◽  
Internal Part ◽  
Computer Aided Analysis ◽  
Computer Aided ◽  
The Moment

A new method for quantification of bone regenerate on the basis of computer-aided analysis of digitized Xray images is presented and its applicability in bone lengthening using Ilizarov method is demonstrated. In contrary to classical methods the internal part of the bone image is taken into consideration instead of the bone edges. Theoretical background of this concept is presented and experimentally verified. Experimental results show that the method proposed allows us for assessment of the bone regenerate, precise choice of the moment of external fixator removal as well as prediction of abnormalities in the osteogenesis process (excluding overall decalcification). However, the rules of interpretation of the results are not discussed in details.

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