No abstract available.
Angiomyoma ; Ear

PURPOSE: To evaluate the findings and the role of contrast enhanced magnetic resonance imaging in avascular necrosis of femoral head. MATERIALS AND METHODS: Sixteen patients with avascular necrosis of femoral head were examined with MRI. Tl-weighted and T2-weighted images and contrast-enhanced Tl-weighted images were obtained. Enhancing characteristics of the necrotic area and synovium were determined. Also a change of the disease extent after enhancement was assessed. RESULTS: Twenty seven avascular necrosis of the femoral head including 11 cases of bilateral lesion were detected. Fifteen cases revealed collapse of the femoral head. The portions of the lesion with low signal intensity on Tl-weighted images and high signal intensity on T2-weighted images showed contrast enhancement in 15 cases. However, the portions with low signal intensities both on T1 and T2-weighted images showed enhancement in one case. There was no significant change of the disease extent after enhancement. Synovium showed enhancement in 18 cases, and joint effusion was detected in 23 cases. CONCLUSION: Contrast enhanced MR images may be helpful in predicting histopathologic findings of avascular necrosis of the femoral head, but not useful for evaluating the extent of disease.
Head* ; Humans ; Joints ; Magnetic Resonance Imaging* ; Necrosis* ; Synovial Membrane

Authors have anthropologically measured the human skeleton from a Dugmoe Tomb of the technopolis of Kwang-ju city. The results obtained were as follows : 1. The human skeleton was thought to be constructed at the beginning of the period of the Chosun, judging from the Dugmoe Tomb. 2. It is female and its stature is estimated as about 163-165cm. The age of the skeleton is estimated to be late 50. 3. The cranial index is 77.09mm and the type is mesocephaly. 4. The cranial length-height index and the cranial breadth-height index were hypsicrane and acrocephaly. 5. The orbital index 95.0mm and the type is hypsiconch. 6. The humerus is comparatively long, slender and has more rounded diaphysis. 7. The femur is similar that of present day, and the type is platyer. 8. The abrasion of the occlusal surface of the teeth was 2.5 point.
Craniosynostoses ; Diaphyses ; Female ; Femur ; Gwangju* ; Humans* ; Humerus ; Orbit ; Skeleton* ; Tooth

No abstract available.
Bone Density*

PURPOSE: Algorithms to get cross-sectional bone density pattern(transverse histogram) to predict the loosening of hip prosthesis using DXA(Dual X-ray Absorptiometry) have been developed. We performed this study to analyze the correlation between radiologic findings and densitometric pattern of the THRA(Total Hip Replacement Arthroplasty) patients. MATERIALS AND METHODS: Thirty-six hips of 32 THRA patients were evaluated. The duration between THRA and DXA was from 1 year 7 months to 15 years. On transverse histogram, the periprosthetic bone density patterns were classified as 3 types;type I, rigid fixation in 17, type II, definite loosening in 8, and type III, partial loosening in 11 cases. Surgical findings, plain X-ray findnings and transverse histogram using DXA were correlated. RESULTS: Among 14 cases performing revision for acetabular prosthesis loosening, 5 cases revealed loosening of fernoral stems while 9 cases revealed rigid fixation of femoral stems. Sensitivity was 100% for either plain X-ray or DXA. Specificity was 88%, 77% for plain X-ray and DXA respectively. CONCLUSION: This preliminary study reveals that periprosthetic bone density pattern on transverse histogram on DXA may be useful in the evaluation of the loosening. However, further study will be needed for clinical application.
Acetabulum ; Arthroplasty, Replacement, Hip* ; Bone Density ; Hip ; Hip Prosthesis ; Humans ; Prosthesis Failure ; Sensitivity and Specificity

There have been several reports that nasal bone fractures are inadequately managed. They are probably due to poor understanding of the pathophysiology of nasal bone fracture and absence of the accurate diagnostic method. And there has been little adequate comprehensive classification of nasal bone fracture and nasal septal fracture. We examed 132 patients sustaining nasal bone fracture using computerized tomography. Fracture line, deviation, depression, associated skeletal deformities and the nasal septum were clearly identified. We compared our results with Murray & Maran's classification of nasal bone fracture. We found that they revealed almost same results and computerized tomography was good method for diagnosis of nasal septal fracture. The computerized tomography will be helpful for accurate diagnosis and preperative planning of the correction of nasal bone and septal fracture.
Classification ; Congenital Abnormalities ; Depression ; Diagnosis ; Humans ; Nasal Bone* ; Nasal Septum

The presence of epicanthal folds in Asian eyelids is one of their unique features, in combination with the lack of supratarsal folds. Western culture has influenced many people to prefer to eliminate the prominent epicanthal fold. A number of surgical techniques have been suggested for their correction. However, difficulty with design, excessive and prominent scarring of medial canthal and nasal area, recurrence, and rigidity of application are potential problems associated with many procedures. This paper describes a epicanthoplasty with three-dimensional Z-plasty. Through epicanthal fold incision, the medial canthal tecdon is medially advanced and sutured to the periosteum of nasal bone. After the transposition of the flaps, trimming of the flap is usually required. Three-dimensional Z-plasty crates the attactive eyes. From March, 1995 to March, 1997, the technique was applied to 37 patients with epicanthal fold and was performed with or without double-fold operation. There were 34 females and 3 males with ages ranging from 17 to 30 years. Through 2 years follow-up, this techniques has delivered esthetically good results with minimal postoperative scar and could made the reduction of ICD from 40 +/- 2.13mm to 34 +/- 1.98mm. The advantages of epicanthoplasty procedure using three-dimensional Z-plasty(Yoon's method) are as follows; 1) simple in design 2) minimal postoperative scar in the medial canthal area 3) versatile in its application 4) no recurrence 5) no hypertrophic scar 6) preserving ethnic identity.
Asian Continental Ancestry Group ; Cicatrix ; Cicatrix, Hypertrophic ; Eyelids ; Female ; Follow-Up Studies ; Humans ; Male ; Nasal Bone ; Periosteum ; Recurrence

In the case of crush injury, the failure rate of replantation of free tissue transfer is high. Recently, the freezing of intact and repaired microarteries has been known to relieve spasm without inducing thrombosis in vivo. Therefore, the author thought that the vascular freezing of crushed vein showing only unrecognized endothelial damage after adequate debridement of a damaged vessel can also relieve spasm without inducing thrombosis and improve the patency rate of microvascular anastomosis. In this study, the process of vascular freezing was investigated in veins with acutely damaged endothelium using ethly chloride in a rat model. Two experiments were performed in 30 Sprague-Dawley rats, weighing about 250 gm. In the first experiment, a new crush model was established on the femoral vein of the rats. The degree of vessel injury was evaluated as crush energy. The proper crush energy was determined only by the endothelial damage without inducing thrombosis(0.037 J). In the second experiment, femoral veins were crushed with the energy of 0.037 J on the left side and then frozen after inflicted crush injury with the same energy on the right side. The gross and pathologic findings and patency rates were observed at postoperative day 2, 10 and 30. Patency in both the crushed and crush-freezing group was 100%. Pathlolgic findings in the crush-freezing group were more severe loss of the intima and most parts of the media, as well as cellular depopulation of the media when compared to the crushed group. Microthrombi adherent to the wall were demonstrated in several crush-freezing specimens, but the crush-freezing group showed relief of crush-induced vasopasm and endothelial regeneration. In conclusion, the freezing of microveins with acute endothelial damage relieves spasm without inducing thrombosis. Therefore, this study presents the posslbility of clinical application of vascular freezing in a case of crush injury requiring microvascualr anastomosis.
Animals ; Debridement ; Endothelium* ; Femoral Vein* ; Freezing* ; Models, Animal ; Rats* ; Rats, Sprague-Dawley ; Regeneration ; Replantation ; Spasm ; Thrombosis ; Veins

Tongue-tie is recognized to have adverse influences in sucking and swallowing(infant feeding), growth of jaw, speech, and mechanical movement due to restrictions of tongue mobility. We used CO2-laser(RYJ-II) in frenulotomy of tongue-tie patients with expectations in reducing intraoperative bleeding, postoperative pain and edema. We operated 32cases of the patient group utilizing CO2-laser(RYJ-II) in frenulotomy, 20 cases of the patient group using classic frenulotomy method with scalpel. We compared following variables in two groups: intraoperative bleeding, operation time and postoperative pain and edema. Frenulotomy using CO2-laser(RYJ-II) resulted in reduction in bleeding, postoperative pain and postoperative edema, while reduction in operation time and wound healing time were not confirmed in this study. Authors suggest the ideal suitability of CO2-laser(RYJ-II) in frenulotomy of tongue-tie patients with a brief review of literature.
Edema ; Hemorrhage ; Humans ; Jaw ; Pain, Postoperative ; Tongue ; Wound Healing

The purpose of this study was to evaluate the histologic difference that occured after trichloroacetic acid(TCA) chemical peel in an animal model that was pretreated with Tretinoin alone or Tretinoin-based combined pretreatment kit. Eight Hartley white guinea pigs were used in our study. The dorsal skin of the guinea pigs was divided into six equal squares(2x2 cm). Upper two areas of these six were not pretreated, middle two areas were pretreated for 4 weeks with Tretinoin alone and lower two areas were pretreated for 4 weeks with Tretinoin-based combined kit. Each guinea pig underwent chemical peel with 50% TCA. The wounded areas were biopsied at post-peeling 3 weeks and 6 weeks. The histology revealed that those animals pretreated with combined kit healed quicker than the animals pretreated with Tretinoin alone. This study implies that if patients are treated with Tretinoin-based-combined pretreatment kit before undergoing chemical peel, the pretreatment time will be shortened.
Animals ; Guinea Pigs* ; Guinea* ; Humans ; Models, Animal ; Skin ; Tretinoin* ; Wounds and Injuries