中华武术的文化内涵与对外传播

武术文化是中国传统文化的组成部分。中华武术几乎涵盖了中国传统文化的各种成份和要素 ,渗透着中国传统文化的精髓。在对外传播中 ,中华武术应以弘扬民族精神和传统美德为根本宗旨 ,以武术健身功能的开发为传播的最佳切入点。     

Dose quantities for characterization of patients' exposure to radiation in computed tomography and their significance for risk estimation

Summary In order to evaluate patients' exposure to radiation in computed tomography, dose quantities such as the computed tomography dose index (CTDI), multiple scan average dose (MSAD) and dose free in air on the axis of rotation are used. The CTDI and the MSAD, derivable from the CTDI, are a good measure for the absorbed doses in the examined volume, but they do not take the biological sensitivity of the organs into account and do not describe the radiogenic risk that is actually relevant for patients and doctors. The dose on the axis of rotation is not an accurate measure of the effective dose and the radiogenic risk. The declaration of a limit for the dose on the axis of rotation should take the different regions into account, in order to guarantee acceptable image quality on one hand and to avoid an unnecessarily high risk on the other side. As physical dose quantities, the CTDI, MSAD and dose on the axis of rotation are useful to characterize and differentiate between programs and systems concerning radiation exposure. Eingegangen am 16. Dezember 1996 Nach überarbeitung angenommen am 14. M?rz 1997     

应用经皮复位钢丝内固定术治疗胫骨踝间隆突撕脱骨折

运用自行设计的定位钻孔器，从胫骨上端向膝关节腔钻孔，在Ｘ线透视下，经皮复位铜丝内固定治疗胫骨髁间隆突撕脱骨折９例，均达解剖复位。１年后随访６例，５例关节功能正常，１例时有膝痛，偶有膝交锁。观察认为该法不但能避免手术对关节周围软组织、关节囊再损伤及所造成的关节粘连、瘢痕形成等副作用，而且操作方便，固定可靠。     

胎儿头盖骨在中耳乳突手术的应用

采用胎儿头盖作为充填材料行外耳骨壁、听骨链重建及乳突腔充填术治疗慢性化脓性中耳炎31例,并进行了15个月～25个月的随访观察。结果表明:所有患者术后均取得了满意结果,平均语言听力提高了22.5分贝(db),且无并发症。此类充填材料来源丰富,制备简单,便于临床推广应用。     

Clinical Experience with a New DDD External Pacemaker

A multicenter trial of a new external DDD pacemaker was conducted to evaluate its clinical performance. Additionally, methods of temporary lead implantation were analyzed for best performance. The device was found to function with few complications. In only 16 of the 146 devices used was the DDD mode abandoned. Of these, 3 were changed to the AAI mode and 4 were for atrial fibrillation. Several methods of lead implantation proved satisfactory. However, a simple U stitch through the muscle functioned best for atrial application and either a U stitch or a tined stitch functioned best for ventricular application.     

Neurological improvement after cranioplasty

Summary The authors studied the changes in neurological signs and cerebral circulation by using dynamic CT scans before and after cranioplasty in six externally decompressed patients. Five of the 6 patients showed some improvements in neurological signs. The results of the dynamic CT scans in 6 cases suggested that increases of bilateral cerebral blood flow may play a role in their neurological improvement.     

离子交换树脂固定果糖转移酶

超声波破碎黑曲霉细胞提取游离果糖转移酶,然后选择D201大孔阴离子交换树脂为载体,通过先吸附后交联的方法固定果糖转移酶.优化的固定化条件:加酶量为每克湿树脂400U,吸附pH值为5.0～5.5,吸附温度为30℃,吸附时间为8h,交联剂戊二醛(终)质量浓度为0.01～0.05g/dL,交联时间为8h,交联温度为1～4℃.固定化酶活最高回收率为30.2%.     

桡骨远端不稳定性骨折手术与保守治疗疗效比较

目的　评价桡骨远端不稳定性骨折外固定器治疗与石膏固定的效果。方法　将桡骨远端不稳定性骨折患者随机分为两组 ,分别采用外固定器治疗和手法复位石膏固定治疗。用Dionst标准行功能评估、Stewart标准行解剖学评估。结果　外固定器组复位质量和疗效优于石膏组 (P <0 0 5 )。结论　桡骨远端不稳定性骨折行外固定器治疗是一种安全、简便、实用的方法。     

A new animal model for bone atrophic nonunion: Fixation by external fixator

A new small animal model of bone atrophic nonunion was established for investigating the process of bone regeneration by performing cauterization of the periosteum, removal of the local bone marrow, and stabilization with external fixation. The model allows the creation of an atrophic nonunion without the need for a critical size defect. Furthermore, it provides reproducible, well‐defined mechanical conditions and minimized physical interference of the implant with the biological processes in the healing zone. Eighty adult Sprague‐Dawley rats received an osteotomy of the left femur, stabilized with an external fixator. In half of the animals, the periosteum proximal and distal to the osteotomy was destroyed by cauterization and the adjacent bone marrow was removed (nonunion group). At 2 and 8 weeks after surgery, radiological, biomechanical, histological, and histomorphometrical analyses showed a typical physiological healing in the control group, while the nonunion group was characterized by resorption of the bone ends with some callus formation distant to the osteotomy. At both time points, the callus was composed of significantly less bone and significantly more connective tissue (p < 0.001). In addition, the torsional strength of the osteotomized femur was significantly less in the nonunion group than in the control group, which was comparable to that of the intact femur (p < 0.001). In conclusion, the present model allows the induction of an atrophic nonunion without the need of a critical size defect. It is reproducible, provides standardized biomechanical conditions, and allows minimized interaction of the implant with the healing zone. © 2008 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res