8 research outputs found
Comparison of the Pollard Method and the MRI Dimensions for Meniscal Sizing in Koreans
Get PDFPURPOSE: The purpose of this study was to investigate the accuracy of the Pollard method for meniscal sizing of the meniscal allograft by comparison with the MRI dimensions. MATERIALS AND METHODS: The width and length of 50 medial and lateral menisci were measured and compared using the Pollard method and MRI. The meniscal thickness was measured using MRI and we evaluated the individual differences. RESULTS: The measurements of the width of the medial meniscus and the length of the lateral meniscus using the Pollard method and MRI were similar (p=0.459, p=0.108, respectively). However, the measurements of the length of the medial meniscus and the width of the lateral meniscus using MRI were significantly higher that those measured using the Pollard method (p=0.000 and p=0.001, respectively). The medial and lateral meniscal thicknesses were 6.26+/-0.86 mm and 6.47+/-0.84 mm, respectively, and there was no significant individual difference. CONCLUSION: The measurements of the length of the medial meniscus and the width of the lateral meniscus, using the Pollard method and on MRI had significant differences. The Pollard method must be modified for meniscal sizing.ope
Effects of Mutant Cartilage Oligomeric Matrix Protein on the Synthesis of Extracellular Matrix in the Swarm Rat Chondrosarcoma Cell Line
Get PDFPurpose: To investigate the effects of mutated cartilage oligomeric matrix protein (COMP) on the synthesis of cartilage-specific major matrix proteins of Swarm rat chondrosarcoma chondrocytes.
Materials and Methods: The Swarm rat chondrosarcoma chondrocytes transfected with chimeric construct consisting of a mutant gene of human COMP and an amino acid FLAG tag sequence were cultured in agarose gel. Formation of extracellular proteoglycan and type-Ⅱ collagen of the cells were evaluated by immunohistochemical staining and measuring 35S-sulfate incorporation.
Results: No difference was observed in type-ll collagen detection among the cell line expressing mutant COMP and control cell lines. Histochemical staining of sulfated proteoglycans with safranin-0 showed lower amounts of proteoglycans were incorporated into the extracellular matrix of chondrocytes transfected with mutant gene. 35S-sulfate incorporation into the cell/matrix fractions demonstrates marked lower radiolabel incorporation compared to control cells.
Conclusion: Mutation of COMP impacts the processing of proteoglycans rather than type-Ⅱ collagen in three-dimensional culture of Swarm rat chondrosarcoma chondrocytes.ope
Operative Treatment of Thumb Ulnar Collateral Ligament Injury
Get PDFPurpose: We reviewed 12 operative cases with ulnar collateral ligament injury of the thumb, and evaluated about gender, age, etiology, injury mechanism, surgical method, prognosis. Materials and Methods: We had operated when there was avulsion fracture over 2mm and when abduction arc was over 30 degrees in the stress view. In the 12 cases, there were 5 men and 7 women. Average age was 26.5 years (from 10 to 57 years). There were 9 cases with avulsion fracture as injury pattern. In the avulsion fracture cases, epiphyseal injury were 3 cases. Results: Surgical methods were needle fixation 7 cases, pull out wire technique 1 case, Statak anchor 3 cases, loose body excision and primary closure 1 case. Average follow up period was 14 months. The clinical results were excellent in 8 cases, and good in 4 cases. In the good prognosis group, there was no joint instability, but there were pain, tightness, and slightly limitation of motion. Conclusion: If complete rupture of the ulnar collateral ligament of the metacarpophalangeal joint of the thumb is left uncorrected, this lesion prevents proper healing and leads to chronic instability and subsequent arthrosis. We achieved satisfactory results after operative treatment in avulsed fractures and over 30 degrees instability in the stress view.ope
Bone response of three different surface implants : histomorphometric and resonance frequency analysis in dogs
No full textThesis (master`s)--서울대학교 대학원 :치의학과 치과보철학전공,2004.Maste
Treatment of the Snapping Discoid Lateral Meniscus without Tear in Pediatrics - Contouring Surgery and Posterolateral Repair -
No full textope
