1.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
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Calcaneus
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Chondroma
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Curettage
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Foot
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Hand
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Heel
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Humans
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Male
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Metatarsal Bones
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Transplants
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
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Ceramics
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Female
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Follow-Up Studies
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Gait
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Hip
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Humans
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Male
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Osteogenesis
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Polyethylene
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Survival Rate
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Tacrine
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Thigh
3.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
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Femur
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Hip
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Hip Fractures
4.Null Association between BRAF V600E Mutation and Tumor Recurrence in Patients with Papillary Thyroid Microcarcinoma in South Korea
Ji Yoon KIM ; Kyoung Jin KIM ; Jae Hyun BAE ; Joo Hyung KIM ; Nam Hoon KIM ; Hee Young KIM ; Hoon Yub KIM ; Seung-Kuk BAEK ; Sin Gon KIM ; Kwang Yoon JUNG ; Kyeong Jin KIM
International Journal of Thyroidology 2021;14(2):135-142
Background and Objectives:
The clinical implications of the BRAF V600E mutation in papillary thyroid microcarcinoma (PTMC), defined as ≤1.0 cm of tumor size, remain controversial. We investigated the association between the BRAFV600E mutation and PTMC recurrence in a retrospective cohort of patients with thyroid cancer.
Materials and Methods:
This study included 2319 patients with PTMC (median age, 50 years [interquartile range (IQR), 41-57 years]) who underwent thyroid surgery from 2010 to 2019 at a single tertiary medical center. The median follow-up time was 75 months (IQR, 30-98 months). Tumor recurrence was confirmed by histological, cytological, radiographic, and biochemical criteria, combined with persistent and recurrent disease.
Results:
A total of 60.2% (1395/2319) patients with PTMC had the BRAF V600E mutation. The tumor recurrence rate was 2.1% (19/924) in BRAF mutation-negative patients and 2.9% (41/1395) in BRAF mutation-positive patients, with a hazard ratio (HR) of 1.05 (95% confidence interval [CI], 0.61-1.84) after adjusting for clinicopathological risk factors. Similar results were found in patients with high-risk PTMC (adjusted HR, 1.09; 95% CI, 0.56-2.11) who had lymph node metastasis (LNM), extrathyroidal extension (ETE), or distant metastasis (DM) at diagnosis and in patients with low-risk PTMC (adjusted HR, 1.00; 95% CI, 0.35-2.83) who had no LNM, ETE, or DM.
Conclusion
The finding that the BRAF V600E mutation was not associated with tumor recurrence in our cohort of Korean patients with PTMC, especially in patients with low-risk PTMC, suggests that its value in the prediction of disease progression is limited.