No abstract available.
Osteoblastoma* ; Paranasal Sinuses*

PURPOSE: Displaced medial humeral epicondyle fractures with or without elbow dislocation have been treated with open reduction and fixation using K-wires or screws. The purpose of this study is to evaluate the clinical and radiological outcomes of surgical treatments of medial humeral epicondyle fracture without elbow dislocation according to the fixation methods. MATERIALS AND METHODS: Thirty-one patients who had undergone open reduction and fixation of the displaced medial humeral epicondyle fracture without elbow dislocation were included. Group I consisted of 21 patients who underwent fixation with K-wires, and Group II comprised 10 patients who underwent fixation with cannulated screws. Immediate postoperative, final follow-up and normal anteroposterior radiographs were compared and the clinical outcome was assessed using the final Japanese Orthopaedic Association (JOA) elbow assessment score. RESULTS: On the immediate postoperative radiographs, the distal humeral width in Group II was larger than that in Group I. On the final follow-up radiographs, the epicondylar position in Group I was lower than that in Group II. There was no significant difference in the distal humeral width, epicondylar position and joint space tilt between the immediate postoperative, final follow-up radiographs and the normal side within each group. There was no significant difference in the final JOA score between groups. CONCLUSION: Open reduction followed by K-wire fixation or screw fixation of the displaced medial humeral epicondyle fracture without elbow dislocation in older children and adolescents resulted in improved radiologic outcome and good elbow function in spite of diverse radiologic deformities.
Adolescent ; Bone Screws ; Bone Wires ; Child ; Dislocations/*prevention & control ; Elbow Joint/*pathology ; Female ; Humans ; Humeral Fractures/*surgery ; Male

PURPOSE: To compare clinical outcomes of the tumor prosthetic replacement and osteosynthetic fixation for pathologic fracture of skeletal metastatic lesion of the proximal femur. MATERIALS AND METHODS: From 1994 May to 2009 May, medical records of 22 patients who underwent tumor prosthetic replacement with tumor resection (group 1) and 15 others (16 hips) who underwent osteosynthetic fixation without tumor resection (group 2) were reviewed. The mean age of overall patients were 59 (group 1) and 60 (group 2). Mean follow up periods were 23 and 11 months. The oncological and functional results were evaluated with Kaplan-Meier methods and Musculoskeletal Tumor Society (MSTS) scoring system, 1993. The statistical evaluation was assessed with Log rank test and t-test. RESULTS: The mean survival periods were 24 months in group 1 and 11months in group 2. The 1 year survival rates were 86% in group 1 and 50 % in group 2, and 2 year survival rates were 29.7% in group 1 and 9.4% in group 2. The mean MSTS functional score were 26.4 (19-30), 87.9% in group 1 and 15.3 (10-23), 51.0% in group 2. CONCLUSION: The results of tumor resection and prosthetic replacement in selected cases was better than osteosynthetic fixation without tumor resection for metastatic bone tumors around proximal femur in oncological and functional aspects.
Femur ; Follow-Up Studies ; Fractures, Spontaneous ; Humans ; Joints ; Medical Records ; Survival Rate

We report a case of type IV hyperlipoproteinemia associated with xanthoma tuberosum and diabets mellitus in a 48 year old female patient. She had several yellowish-brown papules on the knees and palms. The blood glucose level was elevated and serum lipid and lipoprotein analysis revealed patterns of type IV hyperlipoproteinemia. Histopathologic findings of yellowish-brown papules on the knee showed the aggregation of foam cells in the dermis. She has been treated with diet control and hypolipidemic drug(lovastatin and procetofen) and is under our continuing supervision.
Blood Glucose ; Dermis ; Diabetes Mellitus* ; Diet ; Female ; Foam Cells ; Humans ; Hyperlipoproteinemia Type IV* ; Knee ; Lipoproteins ; Middle Aged ; Organization and Administration ; Xanthomatosis*

According to the central limit theorem, the means of a random sample of size, n, from a population with mean, µ, and variance, σ², distribute normally with mean, µ, and variance, σ²/n. Using the central limit theorem, a variety of parametric tests have been developed under assumptions about the parameters that determine the population probability distribution. Compared to non-parametric tests, which do not require any assumptions about the population probability distribution, parametric tests produce more accurate and precise estimates with higher statistical powers. However, many medical researchers use parametric tests to present their data without knowledge of the contribution of the central limit theorem to the development of such tests. Thus, this review presents the basic concepts of the central limit theorem and its role in binomial distributions and the Student's t-test, and provides an example of the sampling distributions of small populations. A proof of the central limit theorem is also described with the mathematical concepts required for its near-complete understanding.
Mathematical Concepts ; Normal Distribution ; Statistical Distributions

Cerebral palsy is a disorder of movement and posture that arises from a congenital or acquired lesion of the immature brain. While the underlying cause is static, the musculoskeletal manifestations are progressive overtime. A variety of gait abnormalities are common, and orthopedic surgery typically is indicated when contractures or deformities decrease functions, cause pain, or interfere with activities of daily life. Surgical procedures should be scheduled to minimize the number of hospitalizations and interference with school and social activities. They can be divided into several groups of procedures; (1) to correct static or dynamic deformity, (2) balance muscle power across a joint, (3) reduce spasticity, and (4) stabilize uncontrollable joints. The clinical decision-making paradigm, consisting of clinical history, physical examination, diagnostic imaging, quantitative gait analysis, and examination under anesthesia makes it possible for single stage multi-level surgeries to reduce the long-term morbidity.
Anesthesia ; Brain ; Cerebral Palsy ; Congenital Abnormalities ; Contracture ; Diagnostic Imaging ; Gait ; Hospitalization ; Humans ; Joints ; Muscle Spasticity ; Muscles ; Orthopedics ; Paralysis ; Physical Examination ; Posture ; Walking

Missing values and outliers are frequently encountered while collecting data. The presence of missing values reduces the data available to be analyzed, compromising the statistical power of the study, and eventually the reliability of its results. In addition, it causes a significant bias in the results and degrades the efficiency of the data. Outliers significantly affect the process of estimating statistics (e.g., the average and standard deviation of a sample), resulting in overestimated or underestimated values. Therefore, the results of data analysis are considerably dependent on the ways in which the missing values and outliers are processed. In this regard, this review discusses the types of missing values, ways of identifying outliers, and dealing with the two.
Bias (Epidemiology) ; Data Collection ; Statistics as Topic

No abstract available.
Otitis Media* ; Otitis*

No abstract available.
Carcinoma, Renal Cell* ; Prognosis*

No abstract available.
Carcinoma, Renal Cell* ; Prognosis*