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[en] The authors report a familial case of primary aneurysmal bone cyst in father and son, affecting both at the same location at nearly the same age. This fact again raises the speculation of a genetic link as another factor in the pathogenesis of aneurysmal bone cyst
[en] The relationship between body weight gain and the onset of bone aberrations (e.g. epiphysitis) is described. A model was derived which described the increase in transverse epiphyseal width, and the major factor found to affect epiphyseal width was average daily gain in body weight. In addition, a radiographic examination of the epiphyseal areas showed a larger number of bone aberrations in groups gaining weight at an above-average rate. Thus, a rapid increase in body weight can be suggested as a significant factor in the onset of epiphysitis
[en] An outline is given of bone scintigraphy, which detects early processes in the bone tissue. The method is based on the external detection of osteotrophic radionuclides which have deposited in the bone tissue after intravenous application. Radiopharmaceuticals used in this method are given. (Z.S.). 9 figs., 35 refs
[en] For this technique, bone needle is introduced into the S1 vertebral body through the interpedicular route by penetrating the central spinal canal at the level of S3-4 and passing through the vertebral body of S2-3 parallel to the anterior border of sacrum. With the interpedicular approach, two sacral vertebral bodies can be injected in one session and lower sacral body injection also is available. interpedicular technique is a safe, practical, and effective technique for the treatment of sacral vertebral body pathologic fractures.
[en] Computer tomography (CT) potentialities in examinations of patients over the course of distraction osteosynthesis and in assessment of the bone regenerate structure of different sites in various periods of its formation and maturation were studied in 25 patients in periods from 24 days to 5 years. CT permitted a visual and densitometric assessment of the developing bone regenerate surrounded by metal constructions. CT helps follow up all the periods of bone regenerate formation and maturation and permits the detection of deviations in this process, if any
[en] The pore scale progression of the sublimation front during primary freeze drying depends on the local vapor transport and the local heat transfer as well. If the pore space is size distributed, vapor and heat transfer may spatially vary. Beyond that, the pore size distribution can substantially affect the physics of the transport mechanisms if they occur in a transitional regime. Exemplarily, if the critical mean free path is locally exceeded, the vapor transport regime passes from viscous flow to Knudsen diffusion. At the same time, the heat transfer is affected by the local ratio of pore space to the solid skeleton. The impact of the pore size distribution on the transitional vapor and heat transfer can be studied by pore scale models such as the pore network model. As a first approach, we present a pore network model with vapor transport in the transitional regime between Knudsen diffusion and viscous flow at constant temperature in the dry region. We demonstrate the impact of pore size distribution, temperature and pressure on the vapor transport regimes. Then we study on the example of a 2D square lattice, how the presence of micro and macro pores affects the macroscopic progression of the sublimation front. (Author)
[en] In 63 patients with mammary or bronchial carcinoma, 88 painful bone metastases were randomly irradiated with one of two schedules to find out wether a short treatment would give the same palliative effect as a longer scheme does. After evaluation of the reaction of the pain to the irradiation and assesment of the side effects, it was found that a shorter schedule can be equally effective without an increase in the incidence and degree of side effects
[en] Highlights: • Atraumatic musculocutaneous neuropathy is a very rare condition. • Differential diagnosis between osteochondroma and bone spur, with absence of the typical cartilage cap. • Multidisciplinary approach is fundamental to make an optimal diagnosis.