1.Risk factors of chronic subscapularis tendon tear
Hyung Bin PARK ; Ji Yong GWARK ; Jae-Boem NA
Clinics in Shoulder and Elbow 2022;25(4):257-264
		                        		
		                        			 Background:
		                        			Chronic subscapularis tendon tear (SBT) is a degenerative disease and a common pathologic cause of shoulder pain. Several potential risk factors for chronic SBT have been reported. Although metabolic abnormalities are common risk factors for degenerative disease, their potential etiological roles in chronic SBT remains unclear. The purpose of this study was to investigate potential risk factors for chronic SBT, with particular attention to metabolic factors. 
		                        		
		                        			Methods:
		                        			This study evaluated single shoulders of 939 rural residents. Each subject undertook a questionnaire, physical examinations, blood tests, and simple radiographs and magnetic resonance imaging (MRI) evaluations of bilateral shoulders. Subscapularis tendon integrity was determined by MRI findings based on the thickness of the involved tendons. The association strengths of demographic, physical, social, and radiologic factors, comorbidities, severity of rotator cuff tear (RCT), and serologic parameters for SBT were evaluated using logistic regression analyses. The significance of those analyses was set at p<0.05. 
		                        		
		                        			Results:
		                        			The prevalence of SBT was 32.2% (302/939). The prevalence of partial- and full-thickness tears was 23.5% (221/939) and 8.6% (81/939), respectively. The prevalence of isolated SBT was 20.2% (190/939), SBT combined with supraspinatus or infraspinatus tendon tear was 11.9% (112/939). In multivariable logistic regression analysis, dominant side involvement (p<0.001), manual labor (p=0.002), diabetes (p<0.001), metabolic syndrome (p<0.001), retraction degree of Patte tendon (p<0.001), posterosuperior RCT (p=0.010), and biceps tendon injury (p<0.001) were significantly associated with SBT. 
		                        		
		                        			Conclusions
		                        			Metabolic syndrome is a potential risk factor for SBT, as are these factors: overuse activity, diabetes, posterosuperior RCT, increased retraction of posterosuperior rotator cuff tendon, and biceps tendon injury. 
		                        		
		                        		
		                        		
		                        	
2.Successful Transcatheter Arterial Embolization following Diverticular Bleeding in the Third Portion of the Duodenum:A Case Report
Seok Jin HONG ; Sang Min LEE ; Ho Cheol CHOI ; Jung Ho WON ; Jae Boem NA ; Ji Eun KIM ; Hye Young CHOI
Journal of the Korean Radiological Society 2021;82(1):237-243
		                        		
		                        			
		                        			 This is a rare case of a 73-year-old male patient who presented with hematochezia and was treated using transcatheter arterial embolization following upper gastrointestinal bleeding in the third portion of the duodenum. The cause of the bleeding was not found on gastrointestinal endoscopy and CT. On the third day of hospitalization, the hemoglobin level continued to decrease. A technetium-99m-labeled red blood cell scan revealed suspicious bleeding in the diverticulum of the third portion of the duodenum. Superior mesenteric artery angiography showed active bleeding from the posteroinferior pancreaticoduodenal artery, which was embolized with N-butyl cyanoacrylate. The patient was discharged on the seventh day after embolization without re-bleeding or complication. We report a rare case of a patient with active bleeding from a duodenal diverticulum that was difficult to diagnose using routine modalities. Herein, we report a rare case of a patient with active bleeding from a duodenal diverticulum that was difficult to diagnose using routine modalities. We also conducted a relavant literature review. 
		                        		
		                        		
		                        		
		                        	
3.Prevalence of Upper Extremity Musculoskeletal Diseases and Disability among Fruit Tree Farmers in Korea: Cross-Sectional Study
Minju KIM ; Jun Il YOO ; Mi Ji KIM ; Jae Boem NA ; Sang Il LEE ; Ki Soo PARK
Yonsei Medical Journal 2019;60(9):870-875
		                        		
		                        			
		                        			PURPOSE: The aim of this study was to examine the prevalence of upper extremity musculoskeletal (MSK) diseases and to identify factors influencing disability among fruit tree farmers in Korea. MATERIALS AND METHODS: Of the 1150 subjects of the Namgaram study, 460 fruit tree farmers completed a questionnaire and underwent clinical evaluations, including physical assessments, laboratory tests, simple radiographic examinations, and magnetic resonance imaging studies of the upper extremities. Disability was assessed using the Disabilities of the Arm, Shoulder, and Hand outcome measure. Data were analyzed with descriptive statistics and regression analyses using SPSS Win 24.0. RESULTS: The prevalences of upper extremity MSK diseases were 60.4% for rotator cuff tear, 20.9% for golf elbow, 40.9% for tennis elbow, and 58.0% for hand osteoarthritis. Disability in fruit farmers was associated with female sex (B=−4.47, p<0.001), smoking (B=−4.00, p=0.026), depression (B=2.83, p<0.001), working hours (B=0.96, p=0.001), injuries of the arms (B=10.78, p<0.001) and shoulders (B=6.75, p<0.001), and numbers of upper extremity MSK diseases (B=2.02, p=0.001), with 26.5% of the variance explained (R2=0.265, Durbin-Watson test=1.81, p<0.001). CONCLUSION: Fruit tree farmers remain at risk for MSK diseases of the upper extremities. Disability tended to worsen with more MSK diseases. It is necessary to not only educate farmers about prevention strategies, but also to develop an effective management system for agricultural work-related MSK diseases and a surveillance system at the government level for the health problems of farmers.
		                        		
		                        		
		                        		
		                        			Arm
		                        			;
		                        		
		                        			Cross-Sectional Studies
		                        			;
		                        		
		                        			Depression
		                        			;
		                        		
		                        			Elbow
		                        			;
		                        		
		                        			Farmers
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fruit
		                        			;
		                        		
		                        			Golf
		                        			;
		                        		
		                        			Hand
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Musculoskeletal Diseases
		                        			;
		                        		
		                        			Osteoarthritis
		                        			;
		                        		
		                        			Outcome Assessment (Health Care)
		                        			;
		                        		
		                        			Prevalence
		                        			;
		                        		
		                        			Rotator Cuff
		                        			;
		                        		
		                        			Shoulder
		                        			;
		                        		
		                        			Smoke
		                        			;
		                        		
		                        			Smoking
		                        			;
		                        		
		                        			Tears
		                        			;
		                        		
		                        			Tennis Elbow
		                        			;
		                        		
		                        			Trees
		                        			;
		                        		
		                        			Upper Extremity
		                        			
		                        		
		                        	
4.A Comprehensive Review of Percutaneous Nephrostomy and Suprapubic Cystostomy
Sa Hong JO ; Sang Min LEE ; Jong Joon SHIM ; Ho Cheol CHOI ; Jae Boem NA ; Hwa Seon SHIN ; Mi Jung PARK ; Soo Buem CHO ; Sung Eun PARK ; Jung Ho JANG
Journal of the Korean Radiological Society 2019;80(4):613-630
		                        		
		                        			
		                        			 Percutaneous nephrostomy is widely used for the diagnosis and treatment of various urinary tract diseases, such as ureteral fistula, stenosis, and percutaneous nephrolithotomy, and the relief of urinary obstruction. Suprapubic cystostomy is also known as a good method for bladder drainage in patients with lower urinary tract obstruction or injury and neurogenic bladder. Despite the frequent use of these procedures, reports in the literature are insufficient for an interventional radiologist to understand the procedures easily and thoroughly. In this article, the indication, anatomy, placement, and postoperative management of percutaneous nephrostomy and suprapubic cystostomy have been described, explaining that the procedures are safe and effective. 
		                        		
		                        		
		                        		
		                        	
5.Common Upper Extremity Disorders and Function Affect Upper Extremity-Related Quality of Life: A Community-Based Sample from Rural Areas.
Dong Kyu MOON ; Young Jin PARK ; Sang Youn SONG ; Mi Ji KIM ; Jin Sung PARK ; Dae Cheol NAM ; Dong Hee KIM ; Jae Boem NA ; Sang Il LEE ; Sun Chul HWANG ; Ki Soo PARK
Yonsei Medical Journal 2018;59(5):669-676
		                        		
		                        			
		                        			PURPOSE: Upper extremity musculoskeletal disorders (UEMDs), such as rotator cuff tear, epicondylitis, and hand osteoarthritis, have a negative impact on quality of life (QOL). In this study, we evaluated the prevalence of rotator cuff tear, lateral and medial epicondylitis, and hand osteoarthritis in the dominant side and the impact of these UEMDs on the disabilities of the arm, shoulder, and hand (DASH) outcome measure, which assesses upper extremity-related QOL. MATERIALS AND METHODS: In 2013–2015, 987 participants from rural areas completed a questionnaire and underwent physical examinations, laboratory tests, simple radiographic evaluations of bilateral upper extremities, and magnetic resonance imaging studies of bilateral shoulders. Based on data from these participants, researchers evaluated DASH and performed a functional assessment of each region of the dominant side and related UEMDs. RESULTS: The prevalences of epicondylitis, rotator cuff tear, and hand osteoarthritis were 33.7%, 53.4%, and 44.6%, respectively. Univariate regression analysis results revealed that epicondylitis, epicondylitis+rotator cuff tear, epicondylitis+hand osteoarthritis, and epicondylitis+rotator cuff tear+hand osteoarthritis were significantly associated with DASH score. Multiple regression analysis, including DASH, UEMD, and regional functional assessments, showed that only epicondylitis and epicondylitis+rotator cuff tear were associated with DASH score. CONCLUSION: Epicondylitis significantly affected QOL, while other UEMDs, such as hand osteoarthritis and rotator cuff tear, had no significant impact. When a patient's QOL is affected by a UEMD, there is an increased possibility of the simultaneous presence of other UEMDs.
		                        		
		                        		
		                        		
		                        			Arm
		                        			;
		                        		
		                        			Hand
		                        			;
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Osteoarthritis
		                        			;
		                        		
		                        			Outcome Assessment (Health Care)
		                        			;
		                        		
		                        			Physical Examination
		                        			;
		                        		
		                        			Prevalence
		                        			;
		                        		
		                        			Quality of Life*
		                        			;
		                        		
		                        			Rotator Cuff
		                        			;
		                        		
		                        			Shoulder
		                        			;
		                        		
		                        			Tears
		                        			;
		                        		
		                        			Upper Extremity*
		                        			
		                        		
		                        	
6.A Study of Changes of Inversion Time Effect on Brain Volume of Normal Volunteers.
Ju Ho KIM ; Seong Hu KIM ; Hwa Seon SHIN ; Ji Eun KIM ; Jae Boem NA ; Kisoo PARK ; Dae Seob CHOI
Journal of the Korean Society of Magnetic Resonance in Medicine 2013;17(4):286-293
		                        		
		                        			
		                        			PURPOSE: The objective of this study was to analyze the brain volume according to the brain image of healthy adults in the 20s taken with different inversion time (TI). MATERIALS AND METHODS: Brain images of healthy adults in the 20 s were acquired using magnetization prepared rapid acquisition gradient echo (MPRAGE) pulse sequence with 1.5 mm thickness of pieces and four inversion times (1100 ms, 1000 ms, 900 ms, 800 ms). The acquired brain images were analyzed to measure the volume of white matter (WM), gray matter (GM), intracranial volume (ICV). The statistical difference according to brain volume and gender was analyzed for each TI. RESULTS: The brain volume calculated using Freesurfer was WM=486.52+/-48.64 cm3 and GM=646.86+/-57.12 cm3 in mean when adjusted by mean ICV=1278.94+/-154.92 cm3. Men's brain volume(WM, GM, ICV) was larger than women's brain volume. In the intrarater reliability test, all of the intraclass correlation coefficients were high (0.992 for WM, 0.988 for GM, and 0.997 for ICV). In the repeated measures analysis of variance, GM and ICV did not show a significant difference at each TI (GM p=0.143, ICV p=0.052), but WM showed a significant (p=0.001). In the linear structure relation analysis, all of the Pearson correlation coefficients were high. CONCLUSION: WM, GM, and ICV indicated high reliability and solid linear structure relations, but WM showed significant differences at each TI. The brain volume of healthy adults in the 20s could be used in comparison with that of patients for reference purposes and to predict the structural change of brain. It would be needed to conduct additional studies to examine the contract, SNR, and lesion detection ability according to variable TI.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Brain*
		                        			;
		                        		
		                        			Healthy Volunteers*
		                        			;
		                        		
		                        			Humans
		                        			
		                        		
		                        	
7.Traumatic Lumbosacral Spinal Subdural Hematoma Mimicking Subdural Lipoma: Value of Computed Tomography.
Sun Chul HWANG ; Hyung Kan KIM ; Seong Hee CHO ; Dae Chul NAM ; Heon Keun LEE ; Kyeong Eon PARK ; Jae Boem NA ; Dong Hee KIM
The Journal of the Korean Orthopaedic Association 2013;48(5):397-401
		                        		
		                        			
		                        			Traumatic lumbosacral spinal subdural hematoma due to anatomical and pathological causes is rare, compared to epidural hematoma. If the time of trauma cannot be determined, intracranial and intraspinal signal intensity according to lapse of time are not coincident, resulting in confusion in terms of differentiation. Fat suppression magnetic resonance image (MRI) and computed tomography (CT) are utilized for differentiation. The intention of this study is to report on a case where spinal subdural hematoma of unknown time of occurrence is differentiated from subdural lipoma by taking advantage of fat suppression MRI and CT in order to perform an early surgical decompression with auxiliary review of literature demonstrating good prognosis of the procedure.
		                        		
		                        		
		                        		
		                        			Decompression, Surgical
		                        			;
		                        		
		                        			Hematoma
		                        			;
		                        		
		                        			Hematoma, Subdural, Spinal*
		                        			;
		                        		
		                        			Intention
		                        			;
		                        		
		                        			Lipoma*
		                        			;
		                        		
		                        			Magnetics
		                        			;
		                        		
		                        			Magnets
		                        			;
		                        		
		                        			Prognosis
		                        			
		                        		
		                        	
8.Nodular Fasciitis with Cortical Erosion of the Hand.
Jin Sung PARK ; Hyung Bin PARK ; Jong Sil LEE ; Jae Boem NA
Clinics in Orthopedic Surgery 2012;4(1):98-101
		                        		
		                        			
		                        			Nodular fasciitis is a benign, reactive myofibroblastic tumor that is often mistaken for a sarcoma because of its histological appearance and rapid growth. Involvement of a finger is extremely rare. We report a case of nodular fasciitis of the thumb, accompanied by bone erosion. Magnetic resonance findings suggested the possibility of a malignancy, which could have led to misdiagnosis as a malignant soft tissue sarcoma. Instead, the lesion was treated by excisional biopsy, which confirmed nodular fasciitis. There has been no evidence of local recurrence at recent follow-up, 1 year after surgery. This case illustrates that, to avoid unnecessarily aggressive surgery, nodular fasciitis must be included in the differential diagnosis for any finger lesion that resembles a sarcoma, even if bone erosion is present.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Biopsy
		                        			;
		                        		
		                        			Diagnosis, Differential
		                        			;
		                        		
		                        			Fasciitis/*diagnosis/surgery
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Finger Phalanges/pathology/*radiography
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Sarcoma/*diagnosis
		                        			;
		                        		
		                        			Soft Tissue Neoplasms/*diagnosis
		                        			;
		                        		
		                        			Thumb/*pathology/surgery
		                        			
		                        		
		                        	
9.Nodular Fasciitis with Cortical Erosion of the Hand.
Jin Sung PARK ; Hyung Bin PARK ; Jong Sil LEE ; Jae Boem NA
Clinics in Orthopedic Surgery 2012;4(1):98-101
		                        		
		                        			
		                        			Nodular fasciitis is a benign, reactive myofibroblastic tumor that is often mistaken for a sarcoma because of its histological appearance and rapid growth. Involvement of a finger is extremely rare. We report a case of nodular fasciitis of the thumb, accompanied by bone erosion. Magnetic resonance findings suggested the possibility of a malignancy, which could have led to misdiagnosis as a malignant soft tissue sarcoma. Instead, the lesion was treated by excisional biopsy, which confirmed nodular fasciitis. There has been no evidence of local recurrence at recent follow-up, 1 year after surgery. This case illustrates that, to avoid unnecessarily aggressive surgery, nodular fasciitis must be included in the differential diagnosis for any finger lesion that resembles a sarcoma, even if bone erosion is present.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Biopsy
		                        			;
		                        		
		                        			Diagnosis, Differential
		                        			;
		                        		
		                        			Fasciitis/*diagnosis/surgery
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Finger Phalanges/pathology/*radiography
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Magnetic Resonance Imaging
		                        			;
		                        		
		                        			Sarcoma/*diagnosis
		                        			;
		                        		
		                        			Soft Tissue Neoplasms/*diagnosis
		                        			;
		                        		
		                        			Thumb/*pathology/surgery
		                        			
		                        		
		                        	
10.Ossifying Lipoma in the Groin.
Sun Chul HWANG ; Dong Hee KIM ; Sang Hyuk LEE ; Dae Cheol NAM ; Gyung Hyuk KO ; Jae Boem NA ; Soon Taek JEONG
The Journal of the Korean Orthopaedic Association 2012;47(6):463-467
		                        		
		                        			
		                        			It is extremely rare to observe ossifying lipoma that developes separately from bone tissues in the groin. A patient with an adult fist-sized, firm, non-movable and painless mass in the left groin area, had been treated with marginal excision, which turned out to be ossifying lipoma. Although many different variants of lipoma with bone tissue have been reported, a case like this has never previously been reported. It is important to distinguish ossifying lipoma, from tumors with calcific lesions. We report its uniqueness in radiologic and pathologic ways, with specific findings of ossifying lipoma.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Bone and Bones
		                        			;
		                        		
		                        			Groin
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lipoma
		                        			
		                        		
		                        	
            
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