STUDY DESIGN: The operative treatment methods of twenty-one patients with Denis type B burst fractures were evaluated according to the level of pedicle screw fixation. OBJECTIVE: To compare the results of short segment pedicle screw fixation with long segment pedicle screw fixation in Denis type B burst fractures treated anteriorly with short bone graft. SUMMARY OF BACK GROUND DATA: Relatively good results(Short fusion time, good union rate, less loss of lordosis postoperatively etc.) were obtained in long segment fixation group during follow-up period. METHODS: Twenty-one patients with Denis B type burst fractures of thoracolumbar and lumbar spine were divided into two groups depend on the level of pedicle screw fixation in operative treatment methods, one group consisted of 10 cases which were treated by posterior short segment pedicle screw fixation and anterior interbody fusion with short bone graft(Group I : one level above and below posteior pedicle screw fixation of the fracture site and upper end plate of fracture site was fused with autogenous iliac bone or rib to adjacent vertebral body anteriorly through involved disc space) and the other groups consisted of 11 cases which were treated by posterior long segment pedicle screw fixation and anterior interbody fusion with short bone graft (Group II : more than two level above and below posterior pedicle screw fixation of the fracture site and additionally, anterior interbody fusion with short bone graft performed same as Group I). Bony union rate, union period, changes of height of bone and disc, kyphotic angle loss, interscrew angle and complications were measured using pre-, post-operative and follow-up radiographs and chart review. RESULTS: Comparing the two groups, there were no significant postoperative and follow-up results in both groups, especially, change of body & disc height, change of kyphotic angle and change of interscrew angle. However, relatively short fusion time, good union rate, less kyphotic angle loss, and low complication rates were obtainecl and maintained during follow-up period in long segment fixation lion group(Group II). CONCLUSIONS: Long segment pedicle screw fixation and anterior interbody fusion with short bone graft group could effectiyely treat Denis B type burst fractures of thoracolumbar & lumbar spine and maintain their postoperative results during follow up peroid.
Animals ; Follow-Up Studies ; Humans ; Lions ; Lordosis ; Ribs ; Spine ; Transplants*

No abstract available.

BACKGROUND: Recentliy copper vapor laser(CVL) has been applied with encouraging results in the treatment of port wine stain. The CVL emits yellow light(578nm) in a sequence of about 10,000 to 15,000 pulses/second(10-15kHz) with a pulse duration of 15-50 cases. One of the basic methods of evaluationg the effects of laser lights is to study histologic changes after laser irradiation. OBJECTIVE: The effects of power output and energy density on the histologic change of guinea pig skin following CVL irradiation was evaluted to suggest a way of deciding parameters of CVL to achieve the best clinical results. METHODS: After setting the power output for one of 0.8W, 1.6W and 2.4W, the laser was irradiated with an energy density of 10, 12, 14, 16, 18, 20J/cm. A biopsy was done 15 minutes after irradiation and the biopsy specimens was stained with H&E and NBTC histocberr ical method. RESULTS: 1. At the power of 0.8W, specimens irradiated with an energy density above 14J/cm showed diffuse nonspecific coagulation necrosis of the epidermis and upper dermis. 2. At the power of 1.6W, specimens irradiated with energy density of 14, 16J/cm showed coagulation necrosis of dermal vessel and perivascular collagen. With energe density of 18, 20J/cm, diffuse nonspecific coagulat,ion necrosis of epidermis and upper dermis were observed. 3. At the power of 2.4W, specimens irradiated with an anergy density of 12, 14, 16, 18J/cm showed coagulation necrosis of the dermal vessel and perivascular collagen. With an energy density of 20J/cm, diffuse nonspecific coagulation necrosis of the epidermis and upper dermis was observed. CONCLUSIONS : With the above results it was found that t,he higher power output of CVL enlarged the range of energy density confining thermal damage to the dermal v-ssels and perivascular collagen. Additionally the higher power raised the upper limit of energy density with which t,he epidermis was viable.
Animals ; Biopsy ; Collagen ; Copper* ; Dermis ; Epidermis ; Guinea Pigs* ; Guinea* ; Herpes Zoster ; Humans ; Inpatients ; Lasers, Gas* ; Necrosis ; Port-Wine Stain ; Skin*

BACKGROUND: Recentliy copper vapor laser(CVL) has been applied with encouraging results in the treatment of port wine stain. The CVL emits yellow light(578nm) in a sequence of about 10,000 to 15,000 pulses/second(10-15kHz) with a pulse duration of 15-50 cases. One of the basic methods of evaluationg the effects of laser lights is to study histologic changes after laser irradiation. OBJECTIVE: The effects of power output and energy density on the histologic change of guinea pig skin following CVL irradiation was evaluted to suggest a way of deciding parameters of CVL to achieve the best clinical results. METHODS: After setting the power output for one of 0.8W, 1.6W and 2.4W, the laser was irradiated with an energy density of 10, 12, 14, 16, 18, 20J/cm. A biopsy was done 15 minutes after irradiation and the biopsy specimens was stained with H&E and NBTC histocberr ical method. RESULTS: 1. At the power of 0.8W, specimens irradiated with an energy density above 14J/cm showed diffuse nonspecific coagulation necrosis of the epidermis and upper dermis. 2. At the power of 1.6W, specimens irradiated with energy density of 14, 16J/cm showed coagulation necrosis of dermal vessel and perivascular collagen. With energe density of 18, 20J/cm, diffuse nonspecific coagulat,ion necrosis of epidermis and upper dermis were observed. 3. At the power of 2.4W, specimens irradiated with an anergy density of 12, 14, 16, 18J/cm showed coagulation necrosis of the dermal vessel and perivascular collagen. With an energy density of 20J/cm, diffuse nonspecific coagulation necrosis of the epidermis and upper dermis was observed. CONCLUSIONS : With the above results it was found that t,he higher power output of CVL enlarged the range of energy density confining thermal damage to the dermal v-ssels and perivascular collagen. Additionally the higher power raised the upper limit of energy density with which t,he epidermis was viable.
Animals ; Biopsy ; Collagen ; Copper* ; Dermis ; Epidermis ; Guinea Pigs* ; Guinea* ; Herpes Zoster ; Humans ; Inpatients ; Lasers, Gas* ; Necrosis ; Port-Wine Stain ; Skin*

Diabetic and nondiabetic vascular diseases cause significant foot problems and it frequently progress to osteomyelitis and amputation. Advances in vascular surgical techniques, including distal arterial bypass via synthetic grafts or autogenous vein grafting have opened the way for higher rate of limb salvage. We have experienced patients with ischemic vascular foot disease and combined skin ulceration and varing degree of soft tissue defect. In three patient with major vessel obstruction, we could preserve limb and avoid major amputation using greater saphenous vein graft with or without microvascular free tissue transfer.
Amputation ; Extremities ; Foot Diseases ; Foot* ; Humans ; Limb Salvage ; Osteomyelitis ; Saphenous Vein ; Skin Ulcer ; Transplants ; Vascular Diseases ; Veins

BACKGROUND: The erythemal response and delayed tanning of the skin to UV radiations which are used as diagnostic phototest and guideline of phototherapy are different according to the races and light sources. OBJECTIVE: The MED and MMD induced by UVB radiation were measured in 130 normal young adult Koreans. METHODS: In this study, a high pressure mercury are lamp(Burdick UV-800) and a sunlight fluorescent lamp(Waldmann UV 800) were used as UVB light sources. Multiple sites of the lower baek or buttock skin were irradiated with an increasing dose by a constant, anount. The minimal doses of erythema response and delayed tanning of the skin were assessed visaually at 24 hours and 7 days after irradiation, respectively. RESULTS: MED and MMD of Burdick UV-800 are 18.0+/-9.8mJ/cm2 (mean+/-S.D.), 29.7+/-12.5mJ/cm2, respectively. MED and MMD of Waldmann UV 800 are 70.8+/-28.5mJ/cm2 and 91.2+/-33.1mJ/cm2, respecively. The most frequent MED by Burdick UV-800 is 10mJ/cm2 and those by Waldmann UV 800 are 50m J/cm2 and 60m J/cm2. CONCLUSION: In this study MED and MMD of young adult Koreans by two kinds of UVB light sources were assessed. The RESULTS: how that MED is less than MMD and the levels of MED under which the photosensitivity is suggested are 5.6mJ/cm2 by Burdick UV-800 anr 32.4mJ/cm2 by Waldmann UV 800.
Buttocks ; Continental Population Groups ; Erythema* ; Humans ; Phototherapy ; Skin ; Sunlight ; Tanning ; Triacetoneamine-N-Oxyl ; Young Adult*

The Dandy-Walker syndrome is a developmental disorders of the brain characterized by cystic deformity of the 4th ventricle and agensis of the cerebellar vermis. Other systemic anomalies and chromosomal abnormalities are associated with this syndrome. We are experienced a case in a 9 months old male infant who presented initially with frequent vomiting, low birth weight, On the physical examination, a prominent occiput, palpable mass below the right upper quadrant, pulmonary valve stenosis, congenital dislocation of the hips, ventral flexion of fingers, clubfoots and the rocker-bottom deformities of feet were present. On the chromosomal study, there were chromosomal polymorphisms in a thickened C-band of chromosome No. 1 by C-banding method. The brain CT revealed a large, thin-walled, low density mass of CSF without enhancement in the posterior fossa, showing upward displacement of cerebellar hemisphere with absent inferior vermis(or associated with dysplastic cerebellar hemisphere). A brief review of the related literatures were included in this report.
Brain ; Chromosome Aberrations* ; Clubfoot ; Congenital Abnormalities ; Dandy-Walker Syndrome* ; Dislocations ; Fingers ; Foot ; Hip ; Humans ; Infant ; Infant, Low Birth Weight ; Infant, Newborn ; Male ; Physical Examination ; Pulmonary Valve Stenosis ; Vomiting

No abstract available.
Baculoviridae* ; Bombyx* ; Coinfection*

STUDY DESIGN: We have analyzed vertebral fractures caused by osteoporosis to find the clinical correlations with fracture types, level of lesion sites, numbers of involved vertebrae, age of patients, and the degree of osteoporosis. OBJECTIVES: To analyze osteoporotic vertebral fractures clinically and it help us to increase our understandings of osteoporotic vertebral fractures and treat the patients more effectively. SUMMARY OF BACKGROUND DATA: There are increasing number of patients with osteoporotic vertebral fractures. However, there are few articles analyzing patients according to their correlating factors. MATERIALS AND METHODS: We evaluated sixty-three patients who were diagnosed and treated conservatively with osteoporotic compression fractures from January 1995 to June 1997. Plain radiographs and DEXA were taken to compare wedge compression ratio, biconcavity ratio, crush ratio according to fracture pattern, level of injury, number of injured vertebral body, and bone mineral density(BMD). All datas were statistically analyzed. RESULTS: There were no significant differences among fracture pattern, level of injury and BMD. However, BMD was more sig-nificantly decreased in patients who was fractured their back at thoracic spine. BMD was lowered at multiply(3 or more vertebral bodies)injured, continuously involved(2 level or more) vertebral bodies. CONCLUSION: We have concluded that careful observation and the efforts to differentiate osteoporotic compression fractures according to fracture pattern, injury level, BMD, and any objective clinical datas would be needed to manage these osteoporotic patients effectively.
Follow-Up Studies* ; Fractures, Compression ; Humans ; Osteoporosis ; Spine

STUDY DESIGN: A case report is presented of a symptomatic sacral perineural cyst with lumbar disc herniation that has reported a few case in the literature. We report the case of symptomatic perineural cyst with lumbar disc herniation. SUMMARY OF LITERATURE REVIEW: Symptomatic sacral perineural cyst is rare and some cases of sacral perineural cyst associated with disc herniation were reported. But it is not well known that the correlation between clinical symptoms caused by mass itself and concomittant lumbar disc herniation. METHODS: A 34-year-old male presented with low back pain, both leg dysesthesia and bilateral radiating pain. Clincal sign and symptom, physical examination, diagnostic imaging studies including MRI, myelography and pathologic findings of surgical specimens were evaluated. RESULTS: After the decompressive partial laminectomy and discectomy, the patient who had diapnosed with herniated nucleus pulposus of L4-5 and L5-S1 complained residual both leg paesthesia and hypoesthesia. Patient's clinical symptom was correlated with sacral perineural cyst. So we removed the cyst. Postoperatively neurologic symptoms and signs were completely relieved. Pathologically, Sacral perineural cyst composed of meningoepithelial cell and neural tissue within cystic wall were confirmed. CONCLUSION: We could find that sacral perineural cyst sufficiently evoked a clinical symptom. So, careful observation was needed in that case of sacral perineural cyst associated with disc herniation.
Adult ; Diagnostic Imaging ; Diskectomy ; Humans ; Hypesthesia ; Laminectomy ; Leg ; Low Back Pain ; Magnetic Resonance Imaging ; Male ; Myelography ; Neurologic Manifestations ; Paresthesia ; Physical Examination ; Tarlov Cysts*