• Clinics in Shoulder and Elbow
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• v.10 no.1
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• pp.131-135
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• 2007

We report an isolated anterior dislocation of the radial head in a 23-year-old man after a fall on the outstretched arm. At the time of the injury, the patient's elbow was in a position of mild flexion and pronation which was suddenly further pronated as he fell down. The radial head was incarcerated by the lateral portion of brachialis muscle, and annular ligament was interposed between capitellum and radial head. Open reduction was performed. During 12 months follow-up, reduction of radial head was well maintained without a limitation of range of motion.

• Clinics in Shoulder and Elbow
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• v.13 no.2
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• pp.230-236
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• 2010

Purpose: We wanted to evaluate the result of percutaneous, mini-open reduction for the treatment of Mason II or III radial head and neck fractures. Materials and Methods: 13 patients (8 male, 5 female) with Mason II or III radial head and neck fractures were treated by 1 cm percutaneous mini-open reduction under fluoroscopy. The average age of our subjects was 29 years. Follow up duration was 18 months. Results: Union was noted in all cases. Mean radial neck angulation was decreased from 33.2 degrees to 7.8 degrees. The mean change in angulation between the immediate post-operative and last follow-up was 0.7 degrees. The mean range of motion at the elbow joint was at last follow up, 133.1 degrees in flexion, 7.3 degrees in extension, 80 degrees in pronation and 84.3 degrees in supination. Postoperatively, mean Mayo Elbow Performance Index, American Shoulder and Elbow Surgeons elbow score, and Disabilities of the Arm, Shoulder and Hand score were 96.2, 97 and 1.2. Temporary posterior interosseous nerve palsy (1 case) and minimal cubitus valgus deformity (1 case) were noted. Conclusion: Selected Mason II or III radial head and neck fractures can be treated satisfactorily with percutaneous mini-open reduction.

• Journal of Veterinary Clinics
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• v.28 no.3
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• pp.328-331
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• 2011

Two dogs presented to the Dueckso Animal Hospital with a history of intermittent lameness of the left forelimb. On physical examination, a visible antebrachial deformity that resulted in gross external rotation of approximately $90^{\circ}$ was observed in two dogs. Medial-lateral radiographic views revealed distal ulnar subluxation, cranial bowing of the radius, radial and ulnar shortening, and external rotation of the paw. A distal ulnar ostectomy and distal radial closing wedge osteotomy were performed in two dogs. A proximal ulnar osteotomy was performed, adjacent to the elbow joint in case 1. Then, the osteotomized site was supported with an intramedullary pin. A T-plate and cortical screws were applied to the proximal and distal radial segments after derotating the distal segment internally. Postoperative radiographic view verified the correction of the angular deformity in two dogs. The follow-up was completed by physical examination 6 and 10 months after surgery respectively. There was no evidence of lameness of the left forelimb in two dogs. Gross observation of the limb revealed an apparent appropriate correction of the rotational and angular deformity in two dogs.

• Journal of the Korean Orthopaedic Association
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• v.56 no.5
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• pp.427-432
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• 2021

Delayed treatment of volar dislocation of the distal radioulnar joint can result in wrist pain, limited rotation of the forearm, and degenerative arthritis that could be managed only by salvage procedures. A 24-year-old male patient presented with wrist pain and a loss of forearm rotation after surgery for a radial shaft fracture. The shaft of the radius was fixed with a plate and screws with a volar angulation of 7°. The ulnar head was dislocated volar to the distal radius, and the bone defect in the ulnar head was impacted into the volar rim of the sigmoid notch of the radius, preventing the head from being reduced in the joint. Corrective osteotomy of the malunited radial shaft and sliding osteotomy of the proximal ulnar head were performed to fill the distal bone defect. Pain and range of the forearm rotation were improved at postoperative 19 months.

• Journal of Chest Surgery
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• v.37 no.11
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• pp.897-902
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• 2004

Background: Although great concerns have been raised regarding the suitability of the use of the radial artery as a bypass conduit after transradial catheterization, there has been no studies that examined this issue in Korea. The purpose of this study was to compare clinical and angiographic results of radial artery grafting between patients with and without previous transradial catheterization. Material and Method: From January 2000 to February 2004, a total of 93 patients underwent coronary artery bypass grafting using the radial artery: 49 patients received preoperative transradial catheterization for coronary angiography (group I) and 44 patients did not (group II). These patients were retrospectively reviewed. Result: There was no significant difference in sex ratio, age, clinical diagnosis, risk factors, ejection fraction and early clinical outcomes between two groups. The graft patency rates in groups I and II were both 100% in the internal thoracic artery and in the radial artery, and 85% and 86% in the saphenous vein. respectively. The stenosis-free graft patency in groups I and II were 93% and 81% in the radial artery respectively but no statistical significance was shown. Conclusion: There was no significant difference in graft patency at postoperative coronary angiography between two groups. Radial artery graft after transradial catherization seems to be suitable for bypass conduit in short-term analysis.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.227-230
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• 2018

본 논문에서는 ART2를 적용하여 X-Ray 영상에서 손목 골절을 추출하는 방법을 제안한다. 제안된 방법에서는 X-ray 영상에서 손목에서의 요골을 추출하기 위해서 요골 및 척골 부위를 ROI 영역으로 설정한다. 설정된 ROI 영역에서 명암 대비를 강조하기 위해 사다리꼴 형태의 Fuzzy Stretching 기법을 적용한다. 사다리꼴 형태의 Fuzzy Stretching 기법이 적용된 ROI 영역에 ART2 기법을 적용하여 요골 및 척골 영역에서 골절이 존재하지 않은 영역을 제거한다. 골절이 존재하지 않은 영역이 제거된 ROI 영역에 다시 ART2 기법을 적용하여 골절의 후보 영역을 추출한다. 추출된 후보 골절 영역을 라벨링한 후, 뼈의 가장자리에 존재하는 골절 후보 영역을 제거한다. 그리고 남아 있는 골절 후보 영역 중에서 가장 큰 두 개의 영역을 골절 부위 영역으로 판단하여 최종적으로 골절 부위 영역를 추출한다.

• Journal of the Korean Orthopaedic Association
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• v.56 no.3
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• pp.215-223
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• 2021

Purpose: Distal radius fractures in youth are treated conservatively in most cases, but there are some cases of redisplacement in the follow-up period after cast immobilization, even after complete reduction. This study examined the risk factors of redisplacement in reduced unstable distal radius fractures. Materials and Methods: From February 2011 to June 2018, 44 unstable distal radius fractures were managed with a closed reduction and cast immobilization. The patients were aged between 6 and 14 years. The cases of redisplacement were analyzed with the fracture characteristics (fracture obliquity, fracture level ratio, ulnar fracture combined), cast qualities (gap index, cast index, 3 point index, and radius-2nd metacarpal angle) and host factors (age, sex). Results: The mean angulation in the union was 9.2° (0°-32.8°). In the categorical grouping 29 cases were within 10° angulation, and 15 cases were more than 10°. No significant differences in the factors of the cast indices or host factors were noted. The meaningful factor was the fracture level calculated by the relative width of the fracture site divided by the sum of width of diaphysis and epiphysis (p=0.001) and combined ulnar fracture (p=0.019). Conclusion: Unstable distal radius fractures should be treated with more stubborn guidelines lest the fracture loses its anatomical alignment. In particular, in patients with less remodeling power, operative treatment would secure a better result if the fracture occurs in a more proximal location.

• Journal of the Korean Society for Nondestructive Testing
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• v.32 no.5
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• pp.494-501
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• 2012

In the present paper, the ultrasound blood images were measured at both the human radial artery(RA) and common carotid artery(CCA), depending on the age, and the pulsatility index of blood echogenicity(PIBE) was analyzed. In addition, the ultrasound blood images were measured at both RA and CCA of both the stroke patients and the control group, and PIBE was compared. PIBE of RA for the young group was similar with that for the old group ($0.13{\pm}0.11$ and $0.16{\pm}0.03$). PIBE of CCA for the young group, however, was larger than that for the old group ($0.70{\pm}0.21$ and $0.32{\pm}0.01$), and was more variable depending on the subject. Similarly, the fibrinogen concentrations of the patients ($336{\pm}61$ and $340{\pm}126mg/dl$) were more than that of the control group ($264{\pm}38$ and $257{\pm}43mg/dl$), for both RA and CCA. The results indicate the possibility of the ultrasonic test on the correlation between erythrocyte aggregation and stroke, and it is expected that the in-vivo EA measurement would be clinically useful.

• Journal of Chest Surgery
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• v.39 no.2 s.259
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• pp.91-98
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• 2006

Background: There are many different opinions regarding the proximal anastomotic sites of radial artery in coronary artery bypass surgery. Therefore, we compared the clinical and angiographic findings according to anastomosis of radial artery to develop a guideline. Material and Method: From January 2003 to December 2004, 48 patients who underwent coronary artery bypass surgery using radial artery in Kangdong Sacred Heart Hospital were studied for clinical and coronary angiographic findings and were divided into group I for radial artery that anastomsed to aorta independently and group II that anastomosed to left internal mammary artery. Result: Patients in group I were 33 (men 26, women 7; mean age 61.93$\pm$6.56) and group II were 15 (men 13, women 2; mean age 59.53$\pm$6.02) and there was no difference in preoperative characteristics. Patients in group I had longer cardiopulmonary bypass time (169.36$\pm$40.28 versus 139.40$\pm$20.45, p=0.026) and patients in group II had more sequential grafts with RA per patients (5/33 versus 11/15, p < 0.05). Patients in group I used more vein graft for distal anatstomosis (47/117 ($40\%$) versus 9/48 ($18\%$), p=0.011) and there was no difference in perioperative outcome and overall survival. Mean follow-up time was 15.87$\pm$7.33 (1 to 28) months in patients of the group I and 21.40$\pm$2.85 (17 to 25) months in group II. Postoperative coronary angiography was performed 17/33 ($51.5\%$) in group I and 14/15 ($93.3\%$) in group II. Early perfect patency rate was not statistically different in left anterior descending artery (15/17 ($88.2\%$) versus 2/14 ($85.7\%$), p=1.00) and radial artery (17/20 ($85\%$) versus 30/30 ($100\%$), p=0.058). Late mortality was 1/33 ($3.0\%$) in group I and 1/15 ($6.7\%$) in group II. Conclusion: There was no difference in terms of clinical and postoperative angiographic findings except in cardiopulmonary bypass time, the number of sequential grafts with the RA per patients and the number of the used vein graft.

• Journal of Chest Surgery
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• v.39 no.1 s.258
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• pp.35-41
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• 2006

Background: The radial arteries are being used more often for coronary artery bypass grafting, We tried to the endoscopic radial artery harvest to reduce the cosmetic problems and neurologic complications of the conventional open harvesting and report the techniques and early results. Material and Method: The 86 patients underwent coronary artery bypass grafting between May 2003 and April 2005 had their nondominant radial artery endoscopically removed through a 2 cm incision at the wrist. The radial pedicle was dissected and was divided at antecubial area through a 5 mm counterincision. Result: The 23 patients complained of neuralgias on territory of superficial raidal none but no one complained of neuralgias on territory of lateral antebrachial cutaneous none. There was no functional impairment of the hand. There was no wound complication except a localized hematoma. All patients were contacted by telephone after postoperative 7.9$\pm$3.6 months. The 4 patients still complained of neuralgia. All the patients were satisfied with the aesthetics of the wounds. The multidetectional tomography was done on the 66 patients for the estimation of early patency of radial artery. There were 2 cases of stenosis and a case of occlusion. Conclusion: Endoscopic radial artery harvest had no functional impairment of the hand, lesser rate of neurologic complications and outstanding aesthetics. The results of early patency of the radial artery was similar to conventional methods. Therefore, we think that endoscopic radial artery harvest is the optimal procedure.