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- Crescent Fracture-dislocation of Sacroiliac Joint: Affecting Factors of Operative Results
- Hee Soo Kim, Chang Wug Oh, Poong Taek Kim, Young Soo Byun, Joo Woo Kim, Byung Chul Park, Woo Kie Min, Hyun Joo Lee
- J Korean Fract Soc 2009;22(2):71-78. Published online April 30, 2009
- DOI: https://doi.org/10.12671/jkfs.2009.22.2.71
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Abstract
PDF - PURPOSE
To assess the affecting factors of results after the operation of Crescent fracture-dislocation in sacro-iliac joint.
MATERIALS AND METHODS
In 19 patients (mean age, 47.4 year-old) of open reduction and internal fixation for Crescent fracture-dislocation, there were seven type I, 9 type II, and 3 type III fractures according to Day's classification. We assessed affecting factors of radiological and functional results, such as patients' ages, surgical approaches, the fixation extent of pelvic ring, and fracture patterns.
RESULTS
Seventeen of 19 cases united at 14.5 weeks in average, and 2 non-unions occurred with the fixation failure of posterior ring. Satisfactory results were 14 and 15 in radiological and functional evaluation, respectively. In complications, three cases of leg length discrepancy were from an imperfect reduction and two fixation failures. Surgical approach did not show any difference of results, but all cases of unsatisfactory reduction occurred from posterior ring fixation through the anterior approach. Fixation of both rings seemed to have satisfactory results, comparing to posterior ring only. Older patients over 60 year-old had more complications and a tendency to show an unsatisfactory result.
CONCLUSION
In operative treatment of Crescent fracture-dislocation of sacro-iliac joint, it is better to fix both anterior and posterior rings. But, caution is needed to prevent complications in old-aged patients. -
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- Development and Accuracy Test of a Robot-arm Type Image-guided Surgery System for Percutaneous Screw Fixation of the Sacro-iliac Joint
- Jin Sup Yeom, Won Sik Choy, Hayong Kim, Jong Won Kang, Kwang Won Lee, Whoan Jeang Kim, Jae Hoon Ahn, Seong Kyu Park, Jong Hwa Won, Hyungmin Kim, Namkug Kim
- J Korean Fract Soc 2005;18(2):191-197. Published online April 30, 2005
- DOI: https://doi.org/10.12671/jkfs.2005.18.2.191
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Abstract
PDF
- PURPOSE
To develop a robot-arm type image-guided surgery system for percuatneous screw fixation of the sacro-iliac joint and to evaluate its accuracy.
MATERIALS AND METHODS
We have developed an image-guided surgery system using a three-dimensional digitizer (Microscribe 3-D G2, Immersion, USA) and a personal computer. The registration error and target localization error at fiducial registration were measured 30 times for each using a phantom made with plastic pelvic bone model (Sawbones, USA). Sixteen 6.5 mm cannulated screws were inserted into four plastic bone models, and the accuracy was evaluated.
RESULTS
The target localization error was 1.46+/-0.47 mm while the registration error was 0.73+/-0.23 mm. All of the 16 screws were inserted well across the sacro-iliac joint, and there was neither cortical breach nor collision between screws or washers.
CONCLUSION
The accuracy of the developed system was similar to that of optical tracker-based navigation systems, and its helpfulness and usefulness was proven with simulation surgery using plastic bone models.
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- Development of a Computer-assisted Surgery System for Screw Fixation of the Sacro-iliac Joint
- Jin Sup Yeom, Won Sik Choy, Ha Yong Kim, Whoan Jeang Kim, Jong Won Kang, Yeongho Kim, Hyungmin Kim, Donghyun Seo, Seok Lee, Jae Bum Lee, Namkug Kim, Cheol Young Kim
- J Korean Soc Fract 2003;16(1):1-7. Published online January 31, 2003
- DOI: https://doi.org/10.12671/jksf.2003.16.1.1
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Abstract
PDF
- PURPOSE
The purposes of this study were to develop a computer-assisted surgery system for percutaneous screw fixation of the sacro-iliac joint and to evaluate its accuracy.
MATERIALS AND METHODS
We have developed a navigation system composed of an optical tracking device (Polaris, Northern Digital, Canada) and a personal computer. The registration error and target localization error at hybrid registration were measured using a phantom. The errors were measured 30 times for each. Sixteen 6.5 mm cannulated screws were inserted into four plastic bone models (Sawbones, USA), and the accuracy was evaluated.
RESULTS
The registration error was 0.76 +/-0.33 mm, and the target localization error was 1.43 +/-0.42 mm. All of the 16 screws were inserted well across the sacro-iliac joint, and there was neither penetration of the cortical bones nor collision between screws or washers.
CONCLUSION
The accuracy of the developed system was similar to existing ones, and its usefulness and helpfulness was proven with screw insertion into plastic bone models.
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