To compare the merit and shortcoming of treatment and securities with absorbable implants and metallic fixation for fractures of the ankle,45 patients with ankle fractures were enrolled from the the Fifth Hospital of Dalian between February 2000 and May 2004 and treated with absorbable implants(n =21)and metallic fixation(n =24),respectively.All patients were available for an average duration of follow-up of 10-18 months.The results were evaluated by radiographic representations and joint function and showed that all the patients were healed in ankle fractures.The total rate of good and excellent results was 92%(19/21)in absorbable implants group and 92%(22/24)in metallic group.There were no statistic differences between these two methods.Absorbable implants is believed to be a good method for the treatment of ankle fracture instead of metallic implants.

No abstract available.

PURPOSE: To describe the magnetic resonance (MR) findings of pigmented villonodular synovitis(PVNS) of the knee, and to evaluate the clinical value of MR in the diagnosis of PVNS. MATERIALS AND METHODS:MR imagings of seven patients with PVNS were studied. The type of lesion, presence of bony erosion, the signal intensity, and the relationship between contrast enhancement and signal intensity on T2-weighted images were analyzed, retrospectively. RESULTS: The lesion was mainly villous in three patients and nodular in four, and bony erosion was seen in one patient. On T2-weighted image, the signal intensity of the villous form was mixed iso- and hypointense in two, hypointense in one, and that of the nodular form was heterogeneous with hypo-, iso-, and hyperintensities. The hypointense portion on T2-weighted image showed poor contrast enhancement, which may suggest hemosiderin deposition or advanced fibrosis. The iso- or hyperintense portion on T2-weighted image showed strong enhancement, which suggest active cellular proliferation. CONCLUSION:MR imaging could be a very useful modality in the diagnosis as well as prediction of histological findings of the PVNS.
Cell Proliferation ; Diagnosis ; Fibrosis ; Hemosiderin ; Humans ; Knee* ; Magnetic Resonance Imaging* ; Retrospective Studies ; Synovitis, Pigmented Villonodular*

No abstract available.
Dementia* ; Epidemiologic Studies*

No abstract available.
Captopril* ; Hypertension, Renovascular* ; Radionuclide Imaging*

Bone is a heterogenous and anisotrophic material exhibiting elastic, viscoelastis and plasticproperties. A considerable amount of information is now available regarding biomechanical properties and mechanisms of fractures of mature long bones, but less is known about the properties of the growing bones. In order to assess the biomechanical properties under tension, rabbits growing bones were loaded with Instron Modal 1,000 until fracture occurred. Two hundred tibiae of 100 New Zealand white immature rabbits were divided into 6 experimental groups according to maturity and size. Group I-R(40 right tibiae of 1-month old rabbits), Group I-L (40 left tibiae of 1-month old rabbits), Group II-R(20 right tibiae of 3-month old rabbits), Group II-L (20 left tibiae of 3-month old rabbits), Group III-R(40 rigth tibiae of 5-month old rabbits), and Group III-L(40 left tibiae of 5-month old rabbits). The following results were obtained. 1. Fracture type was transverse.or nearly transverse in 170 out of the total 200 tibiae(85%).
Absorption ; Elastic Modulus ; New Zealand ; Rabbits ; Tensile Strength ; Tibia

No abstract available.
Chondroblastoma*

Psoriasis vulgaris is one of the most common skin diseases in the world, which is recognized as an autoimmune disease that is caused by genetic and environmental factors. Plaque, guttate, pustular form, and psoriatic erythroderma are known as classical feature of psoriasis with tendency as generalized or sporadic appearance. There are some cases of uncommon forms in the shape and distribution, as nevoid and linear psoriasis. Linear psoriasis is a rare entity and thought as a variant of psoriasis, but its existence is still in debate. Herein, we report an interesting case of 19-year old Korean man with psoriasis, occurring on the right arm, following the line of Blaschko in a linear form.
Arm ; Autoimmune Diseases ; Dermatitis, Exfoliative ; Psoriasis ; Skin Diseases

No abstract available.
Child* ; Humans ; Nevus, Spindle Cell*

STATEMENT OF PROBLEM: When an implant is fixed, a fixture comes into contact with a tissue fluid. Adhesion of a tissue fluid to a surface of implant is various case by case. PURPOSE: The ultimate goal of this work is to analyze a correlation between a surface roughness and wettability of implant specimens. A measurement for wettability is performed considering 4 types of specimen implant with surface treatments different from each other to investigate the change of wettability with the elapse of time. MATERIAL AND METHODS: Firstly, 20 specimens of titanium were prepared. The specimen were made of a commercial Titanium Grade IV with the diameter of 10 mm and the thickness of 1 mm. According to the method of surface treatment, the specimens were classified into 4 groups of 5 specimens per group. Group A: Machined Surface Group B: Anodized surface Group C: RBM (HA blasting) surface Group D: CMP (calcium methaphosphate) coating surface. Surface roughness of specimen was measured using SV-3000S4 (Mituyoto, Japan). The measurement was based on the standard of JIS1994. Sessile drop method was used to measure the wettability, which measures contact angle between implant disc and saline with the time interval of 5, 10, and 15 seconds. SPSS 11.0 was used to analyze the collected data. In order to analyze the difference of wettability and surface roughness according to implant surface treatment method. The statistical significance was tested with the confidence level of 95 percent. Pearson's correlation coefficient was used to evaluate the correlation of surface roughness and wettability. RESULTS: The difference of surface roughness was statistically significant in the order of Group C (1.69 +/- 0.26), Group D (1.58 +/- 0.16), Group B (0.78 +/- 0.14) Group A (0.18 +/- 0.05). The wettability has also a statistically significant difference, which was in the order of group B (17.70 +/- 2.66), Group C (27.86 +/- 4.52), Group D (66.28 +/- 3.70) Group A (70.52 +/- 8.00). There was no difference in wettability with the passage of time. CONCLUSIONS: 1. The surface roughness was high in the order of RBM, CMP, Anodized, Machined group (P < .05). 2. The wettability was high in the order of Anodized, RBM, CMP, Machined group (P < .05). 3. There was no statistical significance in the correlation of surface roughness and wettability.
Surface Properties ; Titanium ; Wettability