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31.
陈德满 《中华临床医学杂志》2006,7(10):14-15
为解决骨盆不稳定性骨折固定难,易产生并发症的难题,结合骨盆的特征进行研究,设计出一种新型骨盆骨折固定器,经62例骨盆不稳定性骨折的治疗观察,随访6个月~2年零6个月,治疗前后X线检查及临床疗效评定:治愈50例,好转12例,认为该固定器设计合理,操作简便,固定牢靠,有加压、撑开、纠正旋转等多项功能结合干一体,仅通过四枚4mm螺纹针,穿入髂骨的髂前上棘处,是一种治疗骨盆不稳定性骨折比较新颖和理想的外固定器。 相似文献
32.
R. J. Wechsler Mark E. Schweitzer David Karasick Diane M. Deely William Morrison 《Skeletal radiology》1998,27(1):1-6
Since the degree of comminution, fracture alignment, and articular congruity of intra-articular calcaneal fractures are important
determinants in surgical treatment and patient prognosis, we review helical computed tomographic (CT) technique and features
for detecting and assessing the extent of acute calcaneal fractures. Helical CT can be used to classify these fractures and
facilitate the surgeon’s understanding of the anatomy and position of the fracture components in all orthogonal planes independently
of the patient’s condition, foot placement in the CT gantry, or other injuries. 相似文献
33.
移位髋臼骨折合并坐骨神经损伤 总被引:6,自引:1,他引:5
报告9例移位髋臼骨折合并坐骨神经损伤的治疗,其中单纯腓侧部损伤5例,联合腓侧部与胫侧部损伤4例。非手术治疗3例,手术治疗6例,平均随访2年,结果为手术治疗5例优良,1例可,非手术治疗2例疗效均不满意,表明手术治疗可有效复位骨折,去除神经外在压迫因素,对性质明确的神经损伤进行必要的松解和修复。本组坐骨神经损伤以腓侧部受累更为常见,腓侧部易受损伤的机理可能与某些局部解剖因素有关 相似文献
34.
35.
Sacral insufficiency fractures develop over a period of time and show time-dependent changes. We report on 15 CT examinations of 5 patients with early-stage insufficiency fractures of the sacrum. In 4 patients only irregular sclerosis without distinct fracture lines was present in 7 of 8 fractures. Of these 4 patients; 3 exhibited intraosseous gas inclusions in a ventral part of a lateral mass; 5 of 8 fractures disclosed a ventral cortical break. When distinct fracture lines had developed in 1 patient, intraosseous vacuum phenomenon had disappeared. Fracture lines evolve over weeks to months and show central bone absorption. The fractures can heal as demonstrated in 4 of 6 fractures in 3 patients, can persist over 1 year without significant changes or can progress to pseudoarthrosis with bone destruction similar to neuropathic joint disease. Intraosseous vacuum phenomena can persist to this stage. Intraosseous vacuum phenomenon is recognized as a potential finding in the early stage of sacral insufficiency fracture, which also is true for irregular sclerosis and ventral cortical disruption.
Correspondence to: A. Stäbler 相似文献
36.
Natasha Shur 《American journal of medical genetics. Part A》2019,179(3):429-434
A 2‐month‐old healthy baby presented to the emergency room with an arm that was not moving and was found to have multiple and extensive fractures of her long bones. An extensive medical work‐up was done, and the hospital's multidisciplinary child abuse team was consulted, including child protection, genetics, radiology, and general pediatrics. It was determined that the history, clinical findings, radiographic findings, and laboratory findings were consistent with child abuse. Child protection services removed the child from the home, and for the next 10 months, the infant was well, and did not sustain a single new fracture. At a civil proceeding to determine the infant's custody, an expert witness for the defense concluded that the child had hypermobile Ehlers‐Danlos syndrome and low vitamin D. He stated that because of these conditions, the baby was vulnerable to fractures with routine handling. This is a personal story of a clinical geneticist who explored fracture fact versus fracture fiction and learned about the difference between responsible and irresponsible testimony. This story gives insight into how physicians can prepare to transition from the clinic to the courtroom. It is also a story about how medical experts must and should remain unbiased, evidence‐based, and committed to accuracy and truth. 相似文献
37.
38.
F. L. I. P. Drijber J. B. Finlay T. K. Moroz C. H. Rorabeck 《Medical & biological engineering & computing》1990,28(1):8-14
An investigation was conducted to determine what improvements in the resistance to slippage could be obtained in selected
interfaces (rod/clip torsional, cheek/bowl and cheek/clip) of the Hoffmann external fixator. The modification involved changing
the standard wing-nut clamp for a bolt with a thread of 7 mm and a 1 mm pitch and placing an FAG 28–303 thrust-bearing (needle
roller and cage assembly) between the bolt and the cheek. The results showed a significant improvement in the slippage values
of all interfaces; increases of approximately six times were obtained at all torque values of the wing-nut clamp or fastener
tested. Such improvements would markedly increase the reliability of external fixation systems and thus reduce the incidence
of loss-of-reduction of fracture due to slippage of the universal joint. 相似文献
39.
The anterior talofibular ligament is the most commonly injured ligament in the ankle. Despite considerable interest in the clinical outcome of treatment protocols, we do not know whether the distinctive pattern of localization of the injuries relates to regional differences in the structure and molecular composition of the ligament. To address this issue, ligaments were examined by histology and immunohistochemistry. Differences in the structure of its two attachments (i.e. entheses) were evaluated with quantitative, morphometric techniques, and regional differences in the distribution of collagens, glycosaminoglycans and proteoglycans were determined qualitatively by immunolabelling. Morphometric analyses showed that bone density was less at the fibular attachment, but that enthesis fibrocartilage was more prominent. Immunohistochemistry revealed the presence of a fibrocartilage (containing type II collagen and aggrecan) at the site where the ligament wraps around the lateral talar articular cartilage in a plantarflexed and inverted foot: the fibrocartilage is regarded as an adaptation to resisting compression. We propose that avulsion fractures are less common at the talar end of the ligament because (1) bone density is greater here than at the fibular enthesis, and (2) stress is dissipated away from the talar enthesis by the 'wrap-around' fibrocartilaginous character of the ligament near the talar articular facet. 相似文献
40.
The structuring of an allergy index based on IgE-mediated skin sensitivity to common environmental allergens 总被引:1,自引:0,他引:1
L R Freidhoff D G Marsh D A Meyers R Hussain 《The Journal of allergy and clinical immunology》1983,72(3):274-287
We computed skin-test sensitivity levels in 485 adults puncture-tested with eight standardized, high-quality inhalant allergens tested at single concentrations. In order to quantitate the "average" IgE-mediated skin sensitivity of each subject, we used both nonparametric and parametric statistical methods to generate two "allergy indices" (Allergy Index I and Allergy Index II) based on sensitivity end-point data from the subpopulations of individuals positive to six of the eight allergens. For the 192 skin test-positive subjects, Allergy Index I and Allergy Index II were significantly correlated with each other (rs = 0.98, p less than 0.001) and with the number of positive skin-test reactions (rs congruent to 0.9, p less than 0.001) as well as with log[total serum IgE] (r congruent to 0.4, p less than 0.01). In 102 ragweed-positive subjects, log[specific IgE to ragweed] was significantly correlated with ragweed-specific "ragweed indices I and II" (r congruent to 0.6, p less than 0.01). Furthermore, the average daily symptom scores reported by 14 ragweed-positive subjects during the ragweed pollination season were significantly correlated with ragweed indices I and II (p less than 0.05). We propose the use of Allergy Index II in epidemiologic and genetic studies of allergic phenotypes as well as in clinical decisions for diagnosis and immunotherapeutic intervention. 相似文献