1.Ganglion Cyst in Acetabular Fossa of the Hip Joint: Case Report.
Ui Seoung YOON ; Hak Jin MIN ; Jin Soo KIM ; Hyun Seok OH ; In Hwa CHUNG ; Ki Hong PARK ; Jae Sung SEO
Journal of the Korean Hip Society 2011;23(3):225-228
		                        		
		                        			
		                        			Ganglions commonly occur on the hand, wrist, knee, ankle and foot, with occasional development around the hip joint. Ganglion in the acetabular fossa is rare. We present a case of a ganglion in the acetabular fossa of the hip with treatment.
		                        		
		                        		
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Ankle
		                        			;
		                        		
		                        			Foot
		                        			;
		                        		
		                        			Ganglion Cysts
		                        			;
		                        		
		                        			Hand
		                        			;
		                        		
		                        			Hip
		                        			;
		                        		
		                        			Hip Joint
		                        			;
		                        		
		                        			Knee
		                        			;
		                        		
		                        			Wrist
		                        			
		                        		
		                        	
2.Primary Cementless Total Hip Arthroplasty with a Sandwich Type in Ceramic-Ceramic Articulation (Minimum 10-Year Follow up Results).
Ui Seoung YOON ; Hak Jin MIN ; Jae Sung SEO ; Jin Soo KIM ; Byung Ho LIM ; Joon Yub KIM ; Hyun Seok OH ; Ju Pil SEOK ; Seung Yub BAEK
Journal of the Korean Hip Society 2011;23(3):206-212
		                        		
		                        			
		                        			PURPOSE: To evaluate the minimum 10-year follow up results of primary total hip arthroplasty (THA) performed using a sandwich-type (alumina-polyethylene-titanium) ceramic bearing. MATERIALS AND METHODS: Thirty four patients (40 hips) who underwent a THA with sandwich typed liners from November 1998 to December 2000 were analyzed. Among the 34 patients, 25 were men and nine were women. Mean follow-up was 134 months (range, 120~145 months) and mean patient age at the time of THA was 47.1 years (range, 24~65 years). The clinical results were evaluated using the Harris hip score and level of thigh pain with a limping gait. The radiographic evaluation was done in terms of the endosteal new bone formation, radiolucent line, subsidence of the stem, migration of the acetabular cup, and proof of loosening. RESULTS: The mean preoperative Harris hip score of 50.2 points (range, 31~87 points) was improved to 90.9 points (range, 75~99 points) at the final follow-up and thigh pain with limping gait in one case. All cases had fixation by bony ingrowth. No radiographically detectable loosening was observed in any hip. Fracture of ceramic liner in one case required change of the polyethylene liner. CONCLUSION: At the minimum 10-year follow up, survival rate as the end-point was favorable. However, fracture of the ceramic is still a major problem. Satisfactory results can be obtained by more precise surgical technique for acerabular inclincation and anteversion, and by improving the quality of the ceramic.
		                        		
		                        		
		                        		
		                        			Arthroplasty
		                        			;
		                        		
		                        			Ceramics
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Gait
		                        			;
		                        		
		                        			Hip
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Osteogenesis
		                        			;
		                        		
		                        			Polyethylene
		                        			;
		                        		
		                        			Survival Rate
		                        			;
		                        		
		                        			Tacrine
		                        			;
		                        		
		                        			Thigh
		                        			
		                        		
		                        	
3.Internal Fixation for Femoral Neck Fracture in Patients between the Ages of Twenty and Forty Years.
Ui Seoung YOON ; Jin Soo KIM ; Hak Jin MIN ; Jae Seong SEO ; Jong Pil YOON ; Joo Young CHUNG
Journal of the Korean Fracture Society 2010;23(1):1-5
		                        		
		                        			
		                        			PURPOSE: To retrospectively analysis of results of operatively treatment for femoral neck fracture occurred in twenties to thirties. MATERIALS AND METHODS: 20 patients were selected whom we were able to follow up at least 2 years after internal fixation for femoral neck fracture in twenties to thirties from 1998 to 2005. Mean age was 32.2 (21~39) and average follow up period was 26.3 (24~45) months. According to preoperative X-ray, there were 6 cases for Garden classification stage I, 10 for stage II and 4 for stage III, and 7 cases for subcapital fracture, 9 for transcervical fracture, 4 for basicervical fracture. In all cases, operations were performed within 12 hours after the injury. The operations were done after satisfying reduction with the Garden alignment index, with three cannulated screws for internal fixation. Postoperative results were analyzed by clinical symptoms and radiological examinations during follow up periods. RESULTS: In immediately postoperative radiological examination, satisfying anatomical reduction with Garden alignment index was obtained in all cases, and unions were obtained within 4.5 months after the operation (3~6 month). Avascular necrosis of femoral head occurred in 7 cases of all patients (35.0%). The average time of occurrence of avascular necrosis of femoral head after operation was 10.7 months (9~15 months). Avascular necrosis was occutted 5 (31.3%) in fracture without displacement (Garden stage I, II), 2 (50.0%) in fracture with displacement (Garden stage III) and 4 in subcapital fracture, 3 in transcervical fracture. CONCLUSION: The incidence of avascular necrosis of femoral head after the operation for displaced and nondisplaced femoral neck fracture between twenties and forty years was no significant difference.
		                        		
		                        		
		                        		
		                        			Displacement (Psychology)
		                        			;
		                        		
		                        			Femoral Neck Fractures
		                        			;
		                        		
		                        			Femur Neck
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Head
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Necrosis
		                        			;
		                        		
		                        			Retrospective Studies
		                        			
		                        		
		                        	
4.Enchondroma of the Calcaneus: A Case Report.
Hak Jin MIN ; Ui Seoung YOON ; Jae Sung SEO ; Jin Soo KIM ; Seung Yub BAEK
The Journal of the Korean Bone and Joint Tumor Society 2010;16(2):87-90
		                        		
		                        			
		                        			Enchondroma is a benign tumor mainly developed in the hand and uncommon in the foot. Even if it is in the foot, most are in the phalanges and distal metatarsals of the foot. Enchondroma in the calcaneus is very rare. A 44-year-old male suffered from left heel pain for several months, authors treated it with curettage and bone graft, it was histologically confirmed as an enchondroma in the calcaneus. The authors presented a rare case presentation of an enchondroma in the calcaneus with pain.
		                        		
		                        		
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Calcaneus
		                        			;
		                        		
		                        			Chondroma
		                        			;
		                        		
		                        			Curettage
		                        			;
		                        		
		                        			Foot
		                        			;
		                        		
		                        			Hand
		                        			;
		                        		
		                        			Heel
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Metatarsal Bones
		                        			;
		                        		
		                        			Transplants
		                        			
		                        		
		                        	
5.Analysis of the Causes for Failed Compression Hip Screws in Femoral Intertrochanteric Fracture and Hip Reconstruction Operation.
Ui Seoung YOON ; Jin Soo KIM ; Jae Sung SEO ; Jong Pil YOON ; Seung Yub BAEK
Journal of the Korean Fracture Society 2010;23(3):270-275
		                        		
		                        			
		                        			PURPOSE: To analyze the causes of fixation failure of compression hip screw and evaluate outcomes of hip arthroplasty for reconstruction. MATERIALS AND METHODS: We reviewed 108 femoral intertrochanteric fractures that underwent compression hip screw between January 1997 and December 2007. Failure group (group I) contained 28 cases who had hip arthroplasty for failed compression hip screw and the control group (group II) contained 80 cases who had successive compression hip screw. We analyzed the causes of failure of compression hip screw and evaluated the results of hip arthroplasty for reconstruction. RESULTS: In group I, 21 cases (75%) were unstable fractures. Group II, 14 cases (17%) were unstable fractures. Tip-apex distance was 26.5 (18~35) mm in group I and 18.6 (8~22) mm in group II. Lateral wall fracture of greater trochanteric area was combined in 24 cases (85.7%) in group I and 9 cases (11.3%) in group II. Harris Hip Score improved from 33.5 (22~43) points to 84.2 (75~93) points after salvage hip arthroplasty. CONCLUSION: We considered the causes of failed compression hip screw to be fracture instability, increased tip-apex distance and presence of lateral wall fracture of greater trochanter. Hip arthroplasty was found to be a useful method for failed compression hip screw.
		                        		
		                        		
		                        		
		                        			Arthroplasty
		                        			;
		                        		
		                        			Femur
		                        			;
		                        		
		                        			Hip
		                        			;
		                        		
		                        			Hip Fractures
		                        			
		                        		
		                        	
6.Multiple Extradural Arachnoid Cyst : A Case Report.
Hak Jin MIN ; Jin Soo KIM ; Ui Seoung YOON ; Ki Hyun JO ; Jae Seong SEO ; Joo Young CHUNG
Journal of Korean Society of Spine Surgery 2009;16(2):122-126
		                        		
		                        			
		                        			Multiple extradural arachnoid cysts of the spine are extremely uncommon in children with only a few cases reported. The authors report a case of multiple extradural spinal arachnoid cysts in children with a review of the relevant literature.
		                        		
		                        		
		                        		
		                        			Arachnoid
		                        			;
		                        		
		                        			Arachnoid Cysts
		                        			;
		                        		
		                        			Child
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Spine
		                        			
		                        		
		                        	
7.Kimura's Disease of the Distal Arm: A Case Report.
Jong Pil YOON ; Ki Hyun JO ; Hak Jin MIN ; Ui Seoung YOON ; Jae Seong SEO ; Jin Soo KIM ; Cheol Hee BAAK
Journal of the Korean Shoulder and Elbow Society 2008;11(2):196-200
		                        		
		                        			
		                        			Kimura's Disease is a very rare, chronic inflammatory disorder with an unknown etiology, and this illness is primarily seen in young Asian males. The typical clinical features consist of painless subcutaneous masses in the head or neck region, and especially in the salivary gland and submandibular region. It is often accompanied with a regional lymphadenopathy, peripheral blood eosinophilia and elevated serum IgE levels. Histologically, it is characterized by prominent germinal centers in the involved lymph nodes, together with eosinophilic infiltration in these lymph nodes. The treatment modalities for this disease are steroid therapy, radiation therapy and surgical excision. Its clinical course is of a benign nature. We report here on a case of a 28 year old man who had a soft tissue mass in his left arm. We excised this mass and the microscopy confirmed that he suffered from Kimura's disease on microscopic examination in his left distal arm.
		                        		
		                        		
		                        		
		                        			Arm
		                        			;
		                        		
		                        			Asian Continental Ancestry Group
		                        			;
		                        		
		                        			Eosinophilia
		                        			;
		                        		
		                        			Eosinophils
		                        			;
		                        		
		                        			Germinal Center
		                        			;
		                        		
		                        			Head
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Immunoglobulin E
		                        			;
		                        		
		                        			Lymph Nodes
		                        			;
		                        		
		                        			Lymphatic Diseases
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Microscopy
		                        			;
		                        		
		                        			Neck
		                        			;
		                        		
		                        			Salivary Glands
		                        			
		                        		
		                        	
8.The Effects of Tourniquet Pressure on the Postoperative Thigh Pain and Blood Loss in Total Knee Arthroplasty.
Jae Seong SEO ; Hak Jin MIN ; Ui Seoung YOON ; Jin Soo KIM ; Ki Hyun JO ; Yong Hoon KIM ; Cheol Hee BAAK
Journal of the Korean Knee Society 2008;20(2):117-122
		                        		
		                        			
		                        			PURPOSE: We wanted to analyze the effects of tourniquet pressure on the postoperative thigh pain and blood loss of patients who undergo total knee arthroplasty. MATERIALS AND METHODS: This prospective randomized study focused on one-hundred sixty-one unilateral total knee arthroplasties that were done with using a tourniquet. The tourniquet pressures were 300 mmHg in group I (seventy-four cases) and 100 mmHg higher than the systolic blood pressure in group II (eighty-seven cases). We analyzed the postoperative thigh pain with using a visual analog scale (VAS), and we assessed the hemoglobin levels and the hematocrits. RESULTS: The incidence of postoperative thigh pain in group II was statistically lower than that of group I. The intensity of the postoperative thigh pain of group II was lower than that of group I at both 6 hours and 72 hours after surgery. There were no statistical differences in blood loss between the two groups. CONCLUSION: Using a tourniquet pressure of 100 mmHg above the systolic blood pressure during total knee arthroplasty can reduce the postoperative thigh pain. When comparing the above technique with a TKA using 300 mmHg of tourniquet pressure, there was no statistically significant difference of the postoperative blood loss.
		                        		
		                        		
		                        		
		                        			Arthroplasty
		                        			;
		                        		
		                        			Blood Pressure
		                        			;
		                        		
		                        			Hemoglobins
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Knee
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Thigh
		                        			;
		                        		
		                        			Tourniquets
		                        			
		                        		
		                        	
9.Breakage of Metal Shell in Total Hip Replacement using CLS Expansion Press-Fit Cup: A Case Report.
Ui Seoung YOON ; Hak Jin MIN ; Jae Sung SEO ; Jin Soo KIM ; Seung Min SUN
Journal of the Korean Hip Society 2007;19(4):504-507
		                        		
		                        			
		                        			Acetabular metal shell breakage is very rare after a total hip replacement. We encountered one case of metal shell breakage at approximately 8 years after the total hip replacement arthroplasty using a CLS expansion cup without a trauma history. Breakage of the metal shell was confirmed during revision surgery. We report this rare case with a review of the relevant literature.
		                        		
		                        		
		                        		
		                        			Acetabulum
		                        			;
		                        		
		                        			Arthroplasty
		                        			;
		                        		
		                        			Arthroplasty, Replacement, Hip*
		                        			
		                        		
		                        	
10.Efficacy of the Preventive Abduction Brace in Dementia Patients After Bipolar hemiarthroplasty of the Hip.
Ui Seoung YOON ; Hak Jin MIN ; Jae Sung SEO ; Yoon Jong KIM ; Jong Hwa WON ; Seung Min SUN
Journal of the Korean Hip Society 2006;18(4):189-193
		                        		
		                        			
		                        			Purpose: To evaluate the efficacy of the preventive abduction brace in dementia patients after bipolar hemiarthroplasty of the hip. Materials and Method: A review of 30 patients who had dementia prior to bipolar hemiarthroplasty of the hip. 20 females and 10 males were evaluated and their mean age was 80.4 years old (range, 68 to -92 years old). The average MMSE-K in dementia patients was 14.2 (range, 8 to 20). The reasons for the bipolar hemiarthroplasties were femoral neck fractures in all the cases. We analyzed the dislocation rates of those who had preventive abduction braces applied prospectively. Results: The average follow-up period after hemiarthroplasty was 2.2 years. All 30 patients had preventive abduction braces and no dislocations occurred after the bipolar hemiarthroplasties. Conclusion: Hip dislocations were not detected in those patients who preventive abduction braces applied. The present findings suggest that having a preventive abduction brace will definitely reduce the dislocation rate in dementia patients who have difficulties with rehabilitation after their operations.
		                        		
		                        		
		                        		
		                        			Braces*
		                        			;
		                        		
		                        			Dementia*
		                        			;
		                        		
		                        			Dislocations
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Femoral Neck Fractures
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Hemiarthroplasty*
		                        			;
		                        		
		                        			Hip Dislocation
		                        			;
		                        		
		                        			Hip*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Rehabilitation
		                        			
		                        		
		                        	
            
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