• Clinics in Shoulder and Elbow
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• v.11 no.2
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• pp.158-164
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• 2008

Purpose: We compared the results of arthroscopic Bankart repair using metal and biodegradable anchor fixation. Materials & Methods: We reviewed 26 patients with anterior shoulder instability treated by arthroscopic Bankart repair from October, 2006, to March, 2007, 15 patients with metal anchors and 11 patients with biodegradable anchors. The average age was 27.4 years old (range: 17~55) and mean follow-up was 14 months (range: 12~17 months). Functional outcome was evaluated using the Korean Shoulder Score for Instability (KSSI), Rowe's Bankart Grading scale (RBGS), ASES score, and UCLA scores. Results: In the metal-anchor group, the improvements of mean KSSI, ASES, UCLA score, and RBGS were 20.6, 24.0, 4.0, and 45.5, respectively. In the biodegradable anchor group, improvements of mean KSSI, ASES, UCLA score, and RBGS were 21.0, 23.6, 4.6, and 48.9. The improvements in final outcomes were not significantly different (p>.05). One metal problem and one traumatic redislocation occurred in the metal group. Conclusion: Both techniques produced satisfactory outcomes in the treatment of traumatic anterior instability. The biodegradable anchor group could also avoid problems with metal anchors.

• Proceedings of the Korea Concrete Institute Conference
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• 2004.05a
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• pp.172-175
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• 2004

This study is to investigate the tensile properties of glass fiber reinforced polymer(GFRP) reinforcing bars with various kinds of anchor systems experimentally. Three types of anchor systems were examined: resin sleeve anchor adopted by CSA Standard, metal overlay anchor by ASTM Standards and wedge anchor normally used in prestressing tendons. Also, three different types of GFRP bars with different surface deformations were tested in this study. All test procedures including specimens preparation, test apparatus and measuring devices were made according to the recommendations of CSA Standard S806-02. From the test results, it was found that the highest tensile strength of GFRP bar was developed by resin sleeve anchor, and tensile strength of GFRP bar with CSA anchor system is $10\%$ higher than that with ASTM anchor system in the case of sand-coated GFRP bar.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2008.03a
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• pp.94-94
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• 2008

• Journal of Korean Orthopaedic Sports Medicine
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• v.7 no.2
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• pp.135-141
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• 2008

Purpose: To study the clinical and radiologic results with arthroscopic Bankart repair using knotless metal suture anchor. Materials and Methods: From February 2001 to January 2005, 68 patients, who underwent arthroscopic Bankart repair using knotless suture anchor and were followed up more than 12 months, were evaluated. A mean follow-up period was 34 months. All shoulders were evaluated by Rowe scoring system, range of motion of the shoulder, pain degree of VAS, and This was compared by radiologic findings after surgery. Results: The Rowe scoring system was 43.30 preoperatively, which improved to 95.55 postoperatively. At last follow-up, there was no significance difference between operated shoulder and non-operated shoulder in range of motion. The degree of VAS was measured from 3.3 preoperatively to 0.5 postoperatively. The radiolucent line was shown around suture anchor in 15 shoulders. 2 shoulders of 15 shoulders were reoperated due to redislocation and anchor arthropathy. In Odds ratio, this group (15 patients) had more 2.6 times the subjective instability than other group (53 patients). Conclusion: Arthroscopic Bankart repair using knotless anchor suture is very effective operative technique. But we have to be careful because the radiolucent line around anchor showed up during a follow -up period may indicate poor prognosis.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.4
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• pp.513-519
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• 2021

Metallic suture anchors are very useful and common fixation devices that are inserted into the target bone to sustain the tendon of a patient with musculus supraspinatus tendon ruptures. On the other hand, the presence of a metallic material prosthesis, such as a metal suture anchor, causes severe MR imaging artifacts, including field distortion, signal loss, and failure of fat suppression. The difference in magnetic susceptibility between metal and other organic materials causes magnetic field distortion surrounding the prosthesis. The resulting magnetic field inhomogeneity makes the images with a lower signal-to-noise ratio and distortion. For a patient with a suture anchor implanted, MR imaging is the golden standard for determining the postoperative prognosis, and a fat-saturation sequence is one of the imaging methods most affected by metal-induced artifacts. In this study, three fat-saturation sequences were compared. Artifact quantification and contrast comparison between the supraspinatus tendon and the surrounding muscle were presented. The images obtained using the STIR pulse sequence showed fewer susceptibility artifacts and better visibility in the supraspinatus tendon and the tissue area. Therefore, the STIR sequence is the most appropriate fat-saturation imaging method for patients with a metallic prosthesis.

• The Academic Congress of Korean Shoulder and Elbow Society
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• 2007.03a
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• pp.22-22
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• 2007

• Journal of the Korean Orthopaedic Association
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• v.55 no.6
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• pp.545-549
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• 2020

Although rare, the treatment options for a medial collateral avulsion fracture during total knee arthroplasty (TKA) range from conservative management using a cast and orthosis to internal fixation using metal screws. Bioabsorbable suture anchors have been used to replace metal fixators with distinct advantages, such as biocompatibility, radiolucency, and unnecessary second removal surgery, but complications, such as osteolysis, have been reported. This paper reports a potential risk of an extensive osteolysis-related suture anchor fixation of a medial collateral ligament (MCL) avulsion fracture during TKA in conjunction with a literature review.

• Bulletin of the Korean Chemical Society
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• v.30 no.10
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• pp.2269-2279
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• 2009

Six metal-free organic dyes having thiophene (1), benzene-thiophene (2), thiophene-benzene (3), thiophene-pyridine (4), thiophene-thiophene (5), and pyridine (6) linkers between 9,9-dimethylfluorenyl terminal group and $\alpha$-cyanoacrylic acid anchor were synthesized. Among them, organic dye 5 showed the longest ${\lambda}_{max}$ value (424 nm) in UV-Vis absorption spectrum, better incident monochromatic photon-to-current conversion efficiency (IPCE), highest short circuit photocurrent density ($J_{SC},\;9.33\;mA^2/cm^2$), and highest overall conversion efficiency ($\eta$, 3.91%).

• Proceedings of the Korean Vacuum Society Conference
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• 2010.02a
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• pp.316-316
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• 2010

Six metal-free organic dyes having thiophene (1), benzene-thiophene (2), thiophene-benzene (3), thiophene-pyridine(4), thiophene-thiophene (5), and pyridine (6) linkers between 9,9-dimethylfluorenyl terminal group and $\alpha$-cyanoacrylic acid anchor were synthesized. Among them, organic dye 5 showed the longest ${\lambda}}max$ value (424 nm) in UV-Vis absorption spectrum, better incident monochromatic photon-to-current conversion efficiency (IPCE), highest short circuit photocurrent density (JSC, 9.33 mA2/cm2), and highest overall conversion efficiency ($\eta$, 3.91%).

• Progress in Superconductivity and Cryogenics
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• v.19 no.2
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• pp.38-43
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• 2017

The role of current lead in high-temperature superconducting synchronous machine (HTSSM) is to function as a power supply by connecting the power supply unit at room temperature with the HTS field coils at cryogenic temperature. Such physical and electrical connection causes conduction and Joule-heating losses, which are major thermal losses of HTSSM rotors. To ensure definite stability and economic feasibility of HTS field coils, quickly and smoothly cooling down the current lead is a key design technology. Therefore, in this paper, we introduce a novel concept of a cooling anchor to enhance the cooling performance of a metal current lead. The technical concept of this technology is the simultaneously chilling and supporting the current lead. First, the structure of the current lead and cooling anchor were conceptually designed for field coils for a 1.5 MW-class HTSSM. Then, the effect of this installation on the thermal characteristics of HTS coils was investigated by 3D finite element analysis.