PURPOSE: With advances in various treatment modalities, limb salvage surgery has been commonly used in osteosarcoma of extremities. An alternative method for skeletal reconstruction is reimplantation of the tumor bearing bone following extracorporeal irradiation (ECI). We report the long-term results of ECI autograft in aspect of the oncological and functional outcomes, and complications. MATERIALS AND METHODS: We retrospectively reviewed 31 osteosarcoma patients who underwent reconstruction with ECI between July 1995 and January 2006. There were 24 males and 7 females with a mean age of 24 (7-74 years) and a mean follow-up of 117 months (17-177 months). Twenty-five cases were reconstructed with ECI autograft, 6 cases with ECI autograft-prosthesis composite. The pathologic subtypes were conventional in 29 cases, periosteal in 1 case, and parosteal in 1 case. The most common location of tumor was distal femur (15 cases) followed by humerus (3), proximal fibula (3) and proximal tibia (3). Musculoskeletal Tumor Society (MSTS) score was used for functional evaluation. The overall survival rate, local recurrence, complications were analyzed. RESULTS: The overall survival rate was 80.6% and the disease-free survival rate was 64.5%. Five patients died of distant metastasis. One patient required above-knee amputation due to local recurrence. All of them, twenty-three complications occurred, which included nonunion in 7 cases, deep infection in 5 cases, joint instability in 4 cases, metal failure in 2 cases, Limb-length discrepancy (LLD) in 2 cases, periprosthetic fracture in 1 case, epiphyseal collapse in 1, local recurrence in 1 case. The mean MSTS functional score was 62.5%. CONCLUSION: Extracorporeal irradiated autograft can be achieved relatively good result in aspect of oncological and functional aspect, but is needed to be additional research about occurring many complications. The reconstruction with ECI after intercalary or fragmentary resection is effective reconstruction in aspect of oncological and functional result, complications.
Amputation ; Disease-Free Survival ; Extremities ; Female ; Femur ; Fibula ; Follow-Up Studies ; Humans ; Humerus ; Joint Instability ; Limb Salvage ; Male ; Neoplasm Metastasis ; Osteosarcoma ; Periprosthetic Fractures ; Recurrence ; Replantation ; Retrospective Studies ; Survival Rate ; Tibia ; Ursidae

No abstract available in English.

No abstract available.
Neural Conduction*

The oropharyngeal swallow of 26 patients with dysphagia was studied quantitatively and qualitatively using videofluoroscope. Videofluoroscopic examination was done with head in neutral position, and with three different c onsistency of test meals; thin liquid, thick liquid, and solid, When aspiration or laryngeal penetration was noted in neutral position, the study was repeated with different head positions, We compared them with each other and with 25 normal subject(previously presented). 11/26(42%) patients revealed laryngeal penetration or aspiration at least with one consistency of test meal. Aspiration occurred more frequently in thin liquid than thick liquid or solid, Head position change successfully eliminated aspiration in 10/10 patients(100%). Other one patient could not change his head position. 9 numerical parameters were derived and calculated for quantitative examination, Liquid meal oral discharge time, pharyngeal delay time, and pharyngeal transit time were significantly increased in patients with aspiration than in patients without aspiration. Also significantly increased than those of normal controls. Because different test meal consistency gave different values, direct comparison of values regardless of meal consistency was fruitless. And because all the process of swallowing cannot be expressed as numerical parameters qualitative examination of videofluoroscopic result was essential. In conclusion, liquid meal oral discharge time, pharyngeal delay time, and pharyngeal transit time were useful parameters in differentiating and quantifying dysphagia. Aspiration can be reduced when appropriate position assumed. Calculated values were different a according to the consistency of the test meal. Quantitative analysis was helpful, but qualitative examination of videofluoroscopy was essential.
Deglutition Disorders* ; Deglutition* ; Head ; Humans ; Meals ; Posture* ; Viscosity*

Histiocytosis X(Langerhans cell histiocytosis) is a rare prolifertive disorder of Langerhans cells that includes Lettere-Siwe disease, Hand-Shiiller-Christian his ase and eosinophilic granuloma. Since many authors have reported in anintermediate and poarl classified form histiocytosis X has a namenclatural had nosologic problem. We report a case benign cutaneous variant of histiocytisis X. A four-month-old boy had shown multiple skin-colour papules on the trunk, head and nik for one month. Extensive in- vestigations failed to detcct any systemic involvement. The clixron microscopic findings of the skin biopsy specimen were Qefinitely diagnostic for histiocytosi. X Since he did not sbow evidence of internal organ involvernent and any further progression of he skin lesion, no therapy was given. Over the next two months the disease underwent spontane us and complete remission.
Biopsy ; Eosinophilic Granuloma ; Head ; Histiocytosis* ; Histiocytosis, Langerhans-Cell* ; Humans ; Langerhans Cells ; Male ; Remission, Spontaneous* ; Skin

OBJECTIVES: Vigorous physical activity is a well-known method to promote people s health. This research aims to investigate whether perceived neighborhood characteristics affect vigorous physical activity among adult Seoul residents (aged 19 to 64). METHODS: Utilizing the 2005 Seoul Citizens Health Indicators Survey data, this study estimates the probability of vigorous physical activity. Particular attention is given to the effects of three perceived neighborhood characteristics (satisfaction with relationship to the neighborhood, satisfaction with park and recreational facilities, and satisfaction with public security). Logistic regression models are analyzed separately by gender for the parameter estimation. RESULTS: Vigorous physical activity is positively associated with three perceived neighborhood characteristics for women, while neither significant nor substantive association is found for men. CONCLUSIONS: As vigorous physical activity among Seoul citizens is differentially affected by perceived neighborhood characteristics and by gender, a different approach will be needed to increase vigorous physical activity of men and women in Seoul.
Adult ; Cities ; Female ; Humans ; Korea ; Male ; Middle Aged ; *Motor Activity ; *Residence Characteristics ; Young Adult

PURPOSE: Sentinel lymph node (SLNB) is the first confronted lymph node from primary lesion of tumor through lymphatic drainage, which is important for determining early metastasis and setting guidelines for treatment. We reported significant of sentinel lymph node biopsy in malignant melanoma (MM) and squamous cell carcinoma (SCC) of lower extremities. MATERIALS AND METHODS: Twenty-five cases of surgically treatment and being possible for follow up more than 1 year among the patients who were diagnosed as MM and SCC in this institution from Sep. 2005 to Jan. 2009, and 10 cases of them were performed SLNB. Average age was 64 years old, and 15 cases of male and 10 cases of female were in this group. RESULTS: 3 years overall survival rate was 100% and 3 years disease-free survival rate was 76%. Metastasis occurred in total 6 patients, 4 cases of inguinal lymph nodes, 1 case of soft tissue around knee, 1 case of left achilles tendon. In 15 cases of not performing SLNB, overall survival rate was 93.3% and disease-free survival rate was 73.3%. In 10 cases of performing SLNB, overall survival rate was 100% and disease-free survival rate was 90%. And only 1 case showed positive finding in the biopsy, and none of the 10 cases showed metastasis in follow-up. CONCLUSION: SLNB leads simpler and less complications compared to prior elective lymph node dissection, and shows high degree of accuracy. Throughout the SLNB, setting guidelines for treatment by accurate staging is thought to be helpful for increasing the survival rate in the patient with MM and SCC.
Achilles Tendon ; Biopsy ; Carcinoma, Squamous Cell ; Disease-Free Survival ; Drainage ; Female ; Follow-Up Studies ; Humans ; Knee ; Lower Extremity ; Lymph Node Excision ; Lymph Nodes ; Male ; Melanoma ; Neoplasm Metastasis ; Nitriles ; Pyrethrins ; Sentinel Lymph Node Biopsy ; Survival Rate

PURPOSE: The purpose of this study was to investigate the muscle activities of the brachioradialis and extensor carpi radialis longus according to the type of backhand stroke in badminton.METHODS: To measure the muscle activities, we used electromyography (EMG) equipment to measure EMG values by performing maximal voluntary contraction (MVC) of the forearm muscles, which depends on the type of backhand stroke. With these values, the %maximum voluntary isometric contraction values were obtained. The data were calculated using SPSS ver. 21.0 and one-way repeated measures analysis of variance with a post-hoc least significant difference test.RESULTS: In this study, the backhand clear achieved higher maximum muscle activity values than those by the backhand push, under clear, and drive in the brachioradialis. The backhand smash achieved higher maximum muscle activity values than those by the backhand push in the extensor carpi radialis longus.CONCLUSION: The backhand clear is associated with a higher injury rate than those associated with the backhand push, under clear, and drive. The backhand smash is associated with a higher rate of the occurrence of tennis elbow than that associated with the backhand push. To prevent injuries, it is considered that the forearm's strength, stretching before and after exercise, and sufficient time to rest are important.
Electromyography ; Forearm ; Isometric Contraction ; Muscles ; Racquet Sports ; Stroke ; Tennis Elbow

The understandings of the characteristics of eccentric exercise are very important because all sports and daily activities under the gravity force should be well coupled between concentric contraction and eccentric contraction as accelerator and decelerator respectively. We tested 40 knee flexors and extensors of 20 normal young persons at different anglular velocities of 60o/sec and 120o/sec using Cybex 6000 (A division of Lumax, New York) isokinetic dynamometer in order to know the characteristics of eccentric isokinetic contraction parameters by comparing with concentric isokinetic parameters. Compared to the concentric isokinetic contraction, eccentric isokinetic the peak torque and average power values of knee extensor and flexor muscles showed negative values which means that eccentric contractions were coupled with concentric contractions as decelerator and energy absorptioner. The peak torque values of eccentric contraction were 38 - 61%, 44 - 79% higher in flexor and extensor, respectively than those of concentric contraction and not so decreased as the peak torque of concentric contraction decreased in high angular velocity. The average power values of knee flexor and extensor muscles were definitely low in eccentric contracton than those of concentric contraction but were increased simultaneously with high angular velocity contraction. Further studies about the velocity dependency, muscle soreness, methodology to measure real eccentric activities and other parameters of eccentric contraction are needed imminently.
Absorption ; Exercise Test* ; Gravitation ; Humans ; Knee ; Muscles ; Myalgia ; Sports ; Torque

OBJECTIVE: To compare the diagnostic significance of H reflex and somatosensory evoked potential(SEP) in the diagnosis of S1 radiculopathy, and to explore the possible interpretations on the discrepancies of the test results. METHOD: Twenty-eight patients who were diagnosed as a S1 radiculopathy by the clinical and radiological correlations, and thirty-five controls with no evidence of S1 radiculopathy by the clinical or radiological studies were studied by the H reflex, sural SEP, and needle electromyography. RESULTS: The sensitivity of H reflex study was 64% for the S1 radiculopathy, and the specificity was 86%. The sensitivity and the specificity of the sural SEP study for the S1 radiculopathy were 50% and 80% respectively. Within 1 month from the onset, the sensitivity of H reflex increased to 75%. The needle electromyography showed 19% for the sensitivity and 100% for the specificity. The probability of the S1 radiculopathy was 70% in 10 cases who had the abnormal H reflex and normal SEP values and 36% in 8 cases who had the normal H reflex and abnormal SEP values. CONCLUSION: H reflex study was the most sensitive test in the electrodiagnosis of the S1 radiculopathy and the electrodiagnostic significance of sural SEP was obscure.
Diagnosis ; Electrodiagnosis ; Electromyography ; Evoked Potentials, Somatosensory* ; H-Reflex* ; Humans ; Needles ; Radiculopathy* ; Sensitivity and Specificity