No abstract available.
Adult* ; Humans

To observe the change in the status of stresses according to size of the meniscus, a 3-dimensional photoelasticity model of the knee joint was made of epoxy. Three kinds of meniscus models were made of rubber. Through the axial application of a vertical compressive load of 8kg equivalent to the joint reaction of 3,000N in the human knee joint, the peculiar patterns of the isochromatic fringes were observed and stresses around the knee joint were analyzed according to the size of the defect in the medial meniscus. Even distribution of the photoelasticity fringe patterns were observed in the normal knee joint model with both menisci intact. Stress concentration was increased at the margin of the medial side of the knee joint model with the medial menicus removed partially in about 30-50% of its central portion. In addition, the magnitude of stresses were also noted as increased in the lateral part of this type model. In the knee joint model with nearly all of the medial meniscus removed, strssess were concentrated markedly in the central portion of the knee joint just outside of both tibial spines. Stress was increased in its magnitude according to the size of the defect of the meniscus, and was focalized after menisectomy. In the model for partial menisectomy, the maximum stress concentration point of the removed side migrated to the margin of the same side of the joint. But in the model of total menisectomy, maximum stress concentration points of both side were more centralized. Not only an increment of stresses in magnitude but also centralization of the maximum stress concentration point in its location could contribute to the degenerative process of the knee joint after menisectomy. In addition, articular cartilage can be easily damaged with a relatively small amount of external force.
Cartilage, Articular ; Humans ; Joints ; Knee ; Knee Joint ; Menisci, Tibial ; Rubber ; Spine

Epidemilologic information about various syndromes in low back pain has been regarded by Vert Mooney as one of the important sources for establishing prognosis and providing a rationale for therapy. Several risk factors about low back pain and injuries were analyzed through a questionnaire filled out by 172 athletes of various kind of sports including students and professional players. The following results were obtained. 1. Types of sports were associated with the incidence of low back injuries and gymnastics were included in high risk groups (p<0.01). 2. Career is also associated with the incidence of low back injuries (p<0.05). 3. Pain pattern, such as anterior element pain or posterior element pain is also associated with the particular type of sport(p<0.001). 4. Over-use has been suspected as a main cause of sports injury in 37.8% of athletes. Neglect of warming-up, psychologic attitudes and chronic accumulation of micro-trauma have been also suspected (p<0.001). 5. Management of pain was expected to be received from physiotherapists by 34.2%, from coaches or fellow sportsmen by 24.6%, from an acupuncturist by 17.5%, from doctors by 9.7%, and from trainers by 14% of athletes. However 66.7% of the professional players wanted to receive management of pain from trainers (p<0.001).
Athletes ; Athletic Injuries ; Back Injuries ; Epidemiologic Studies ; Gymnastics ; Humans ; Incidence ; Low Back Pain ; Physical Therapists ; Prognosis ; Risk Factors ; Sports

Purpose: The aim of the study was to conduct a systematic review and meta-analysis of nurses’ turnover intention in existing studies. Methods: A literature search was conducted in two rounds. The first round was performed on December 16, 2018. The search period was from January 1, 2008, to December 16, 2018, and involved seven databases: MEDLINE and EMBASE, which are international academic databases, and KoreaMed, KERIS, KISS, KISTI, and KMbase, which are domestic academic databases. The second search round was performed on July 2, 2022. The search period was from 2019 to 2022. Results: Fifty-three variables associated with turnover intention were identified in articles in the first round, with significantly associated work- and organization-related parameters, including burnout, emotional labor, job stress, role conflict, job satisfaction, and organizational commitment. Thirty-eight variables were identified in the second round, with mental and psychological parameters, including mental health and psychological capital, having a more significant influence. Conclusion The findings of this study can be used to prevent the turnover of hospital nurses and develop strategies for retaining excellent and professional hospital nurses.

Purpose: The purpose of this study was to develop and psychometrically test the nursing start-up attitude scale for student nurses. Methods: The initial items were based on the second analysis of systematic review of previous studies and in-depth interview data with 9 nurse entrepreneurs. In total, 25 items were derived based on the pilot survey.Psychometric testing was conducted with 324 student nurses. Data were analyzed using validity and reliability test methods. Results: Six factors, including 12 items explaining 74.4% of the total variance, were verified. The factors were opportunity of self actualization, network building, enhacing start-up competencies, outcomes of start-up, preparation for start-ups, and risk taking. Cronbach's ⍺ was .75. Conclusion As validity and reliability have been verified through various methods, the developed scale in this study can contribute to assessing student nurses’ attitudes to nursing start-ups.

With respect to the histogenesis of the neurofibroma, there are many controversies, since von Recklinghausen postulated that neurofibromas are mainly fibrous tumors arising from the connective tissue of the nerve sheaths. According to the recent studies through the electron microscope, the neoplastic perineurial cells are regarded as the main components of the tumor. So, the neurofibroma enucleated from the median nerve at the level of proximal arm without resulting neurologic sequale was examine through the light-and electron microscope. Ultrastructurally, this tumor is composed of the perineurial cells, fibroblasts, and collagen fibers. The predominant perineurial cells show distinct basal lamina, and contain abundant microfilaments.
Actin Cytoskeleton ; Arm ; Basement Membrane ; Collagen ; Connective Tissue ; Fibroblasts ; Median Nerve* ; Neurofibroma*

No abstract available.

Treatment of the olecranon fractures by prolonged immobilization often results in limited elbow motion. With the use of tension band wiring, anatomical reduction was obtainable, and only a short period of immobilization was needed. We reviewed the cases of 17 patients who underwent surgical treatment of the olecranon fracture. All patients were treated by tension band wiring. In the overall series, we were able to obtain 53 percent excellent, 30 percent good, and 18 percent fair results.
Elbow ; Humans ; Immobilization ; Olecranon Process*

The treatment of tibial shaft fracture has become one of the most controversial subjects in orthopedic surgery. Comminuted, segmental and rotationally unstable fractures or bone defect at fraction site have problems of the fixation. The interlocking nail solve these problems. We have experienced 8 cases of the tibial shaft fractures treated with interlocking nail from 1986 to 1988. Authors analyzed these cases and out own clinical study. The results were as follows. 1. The average bone union rate was about 15 weeks. 2. The interval between operation and crutch walking was 4.3 weeks. 3. The merits of this operation were the short hospitalization and early adaptation of social activity. 4. The advantage is be able to do early ambulation without following muscular atrophy or joint stiffness. 5. The results were assessed on clinical examination and radiographic appearance by Hamza et al. An excellent results were 7 cases and good result was 1 case.
Clinical Study ; Early Ambulation ; Hospitalization ; Joints ; Muscular Atrophy ; Orthopedics ; Walking

No abstract available.
Antibodies* ; Coxiella burnetii* ; Coxiella* ; Korea* ; Prevalence* ; Q Fever*