No abstract available.
Korea* ; Social Class*

No abstract available.
Korea* ; Social Class*

Hallux valgus is a complex deformity consisting of more than a 20° valgus angle of the first metatarsophalangeal joint. And more than 9° between the first and second metatarsals as well as bursal hypertrophy over the medial eminance of the first metatarsal head(bunion). Many surgical procedures have been available for treating the hallux valgus complex. Johnson and Coreless have acquired sufficiently good results in modifying the Mitchell osteotomy into the chevron osteotomy. They recommend the chevron osteotomy for the hallux valgus complex with the following patient profile : younger than 50 years old, hallux valgus angle less than 40°, the first-second intermetatarsal angle less than 20°. This procedure consists of 1) medial eminance removal, 2) V-shaped intracapsular osteotomy through the first metatarsal head, 3) lateral displacement of the capsular fragment, 4) removal of the resulting projection of the first metatarsal, and 5) medial capsulorrhaphy. Our results of eleven cases of the hallux valgus deformity which were treated by the chevron osteotomy during the period form July 1985 to Februsary 1988, in the Orthopedic Department of Keimyung University Dongsan Medical Center were as follows. 1. The average age at surgery was 43 years. 2. The average valgus angle was 38° and the first-second intermetatarsal angle was 15° preoperatively. They were correted to 19° and 10° respectively. 3. All cases had complained of severe metatarsalgia preoperatively. 4. The metatarsalgia subsided in all cases, and no avascular necrosis or nonunion was found.
Clinical Study ; Congenital Abnormalities ; Hallux Valgus ; Hallux ; Head ; Humans ; Hypertrophy ; Metatarsal Bones ; Metatarsalgia ; Metatarsophalangeal Joint ; Necrosis ; Orthopedics ; Osteotomy

No abstract available.
Humans

Sensation is the key element that allows the fingertip to participate effectively in virtually all hand functions. Therefore, it is very important to restore sensation as well as well padded, durable skin coverage following severe fingertip injuries. Many ingenious operations have been described to provide the fingertip with sensate coverage. Among them, the innervated cross-finger flap, reported by Cohen et al. in 1983, is very effective and successful in reconstruction of severe fingertip injuries, We report five cases of severe fingertip injuries treated with innervated cross-finger flap. The results are as follows : 1. The level of sensory return and the functional result is excellent in those fingertips reconstructed with the innervated cross-finger flap. 2. Mean time for flap detachment is 16 days post operative and local anesthesis at outpatient department is sufficient. 3. Four of five treated patients achieved excellent sensibility with measurable two-point discrimination(mean 5.0 mm) and ability to recongnize textures and objects.
Fingers ; Hand ; Humans ; Outpatients ; Sensation ; Skin

Vascular leak syndrome(VLS) is characterized by endothelial damage, which causes extravasation of plasma proteins and fluid from capillaries into the extravascular space. It has been suggested that the increased vascular permeability is the result of an IL-2-induced suppression of endothelin-1 secretion by endothelial cells, an IL-2-induced activation of the complement cascade or TNF-alpha release from IL-2-activated T-cells. A 13-year-old male patient visited our hospital with abdominal pain. He was diagnosed with acute lymphoblastic leukemia(T cell type) by bone marrow study on his 2 nd day in hospital. On the 3 rd day of induction chemotherapy(prednisone, L-asparaginase, vincristine, intrathecal methotrexate), pulmonary edema and pleural effusion, ascites and generalized edema developed and lasted for 53 days without responding to supportive care. The laboratoy finding was that TNF-alpha was increased without evidence of infection and hypoalbuminemia was noted. It was suggested that the patient's clinical feature was induced by VLS.
Abdominal Pain ; Adolescent ; Ascites ; Blood Proteins ; Bone Marrow ; Capillaries ; Capillary Permeability ; Complement System Proteins ; Edema ; Endothelial Cells ; Endothelin-1 ; Humans ; Hypoalbuminemia ; Induction Chemotherapy* ; Male ; Pleural Effusion ; Precursor Cell Lymphoblastic Leukemia-Lymphoma* ; Pulmonary Edema ; T-Lymphocytes ; Tumor Necrosis Factor-alpha ; Vincristine

Dental restorative materials must have the physical properties to withstand wear and corrosion. Base metal alloys possess better mechanical properties and lower price than the gold alloys. For these reason such alloys have largely replaced the precious metal alloys. One aspect to consider is the release of metal substances to oral environment. The release of elements from dental alloys is a continuing concern because the elements may have the potentially harmful biological effects on local tissue. The purpose of this study was to minimize metal release on the nonprecious metal surfaces by ion bea assisted deposition(IBAD) of titanium nitride (TiN). Ni-Cr-Be alloys with and without TiN coatings were secured in an wear test machine opposing ruby ball to determine their relative resistance to wear with 100m, 200m, 300m and 400m sliding distance. And the corrosion behavior of the Ni-Cr-Be alloys with and without TiN coating and 3 dental noble alloys have been studied. Potentiodynamic curves were used to analyse the corrosion characteristics of the alloys. The measurement of the released Ni and Ci ions was conducted by analysis of the electrolyte solution with atomic absorption spectroscopy. The results were as follows : 1. The critical sliding distance that wore down TiN coating of 2.5micrometer thickness in this study condition was 300m. 2. Ion beam assisted deposition of TiN showed a good surface modification with respect to the properties of wear and corrosion resistance. 3. X-ray diffraction showed that the strongest peak of TiN(111) in the coatings. 4. The release of Ni and Cr ions from alloys measured by means of atomic absorption spectroscopy was reduced by ion beam assisted deposition of TiN.
Absorption ; Alloys* ; Corrosion ; Dental Alloys ; Gold Alloys ; Ions ; Spectrum Analysis ; Tin* ; Titanium ; X-Ray Diffraction

No abstract available.
Humans ; Primary Health Care*

Met protein is a transmembrane 190 kD heterodimer with tyrosine kinase activity, encoded by c-Met oncogene. It serves as a high affinity receptor for hepatocyte growth factor (HGF)/scatter factor (SF), a cytokine which stimulates cell proliferation, motility, and invasion. In this study, we immunohistochemically evaluated the expression of Met/hepatocyte growth factor receptor in colorectal cancers. Met protein was expressed in 31 of 72 patients (43.1%). The staining pattern was cytoplasmic in nature, present throughout the tumor, and showed variable intensity from case to case. The relationship between the expression rate and intensity, and age and sex of patients, tumor size (p=0.645), tumor site (p=0.902) and tumor differentiation (p=0.844) was not statistically significant. The expression rate and intensity were significantly correlated with lymphovascular invasion (p=0.001), lymph node metastasis (p=0.010), depth of invasion (0.019), and stage (p=0.023). Cytoplasmic accumulation of Met protein was not associated with enhanced PCNA index of tumor cells (p=0.052). These results suggest that Met protein may play an important role in the invasion and metastasis of colorectal cancer cells.
Cell Proliferation ; Colorectal Neoplasms* ; Cytoplasm ; Hepatocyte Growth Factor ; Humans ; Lymph Nodes ; Neoplasm Metastasis ; Oncogenes ; Proliferating Cell Nuclear Antigen ; Protein-Tyrosine Kinases

It is well established that mast cell proliferation and maturation are regulated by two principle cytokines, IL-3 and the c-kit ligand stem cell factor (SCF). Previous reports have demonstrated that bone marrow-derived IL-3-dependent mast cells exhibit the characteristic apoptosis on removal of IL-3. To know how the number of mast cells is controlled, we observed the effects of nitric oxide (NO) on the murine bone marrow-derived cultured mast cells (BMCMC). Apoptosis was measured by the analysis of flow cytometric data and electrophoretic evidence of DNA fragmentation. Our data showed that sodiurn nitroprusside (SNP)-a NO releasing substance- induced apoptosis in BMCMC. Cell cycle analysis showed that the number of the G,/G, and S phase decreased markedly, while the percentage of cell in G,/M phase was increased. Also, SNP alone induced cell death, whereas SNP in combination with SCF markedly decreased cell death of BMCMC. SNP-induced apoptosis was partially inhibited by the treatment of BMCMC with SCF. Our results suggest that NO might have sorne role in the regulation of the number of mast cells.
Apoptosis ; Bone Marrow* ; Cell Cycle ; Cell Death ; Cytokines ; DNA Fragmentation ; Interleukin-3 ; Mast Cells* ; Nitric Oxide* ; Nitroprusside ; S Phase ; Stem Cell Factor