An ultrastructural study on anterior cruciate ligament reconstruction using autogenous patellar tendon grafts in dogs

An ultrastructural study was undertaken concerning morphological changes within the autografted patellar tendon (PT) after being transplanted to the anterior cruciate ligament (ACL) in mongrel dogs. After 4 weeks, the arrangements of both large and small collagen fibrils in the PT graft became disordered, and the number of inflammatory cells increased. However, the same PT grafts revealed postsurgical signs of newly-produced collagen fibrils around activated fibroblasts at 12 to 24 weeks. At 52 weeks after the transplantation, small collagen fibrils increased in both number and density, showing a remarkable morphological similarity to the collagen fibrils of normal ACL. These data indicate that the characteristics of the PT graft eventually resemble those of a normal ACL. This paper was presented in part at the Combined Meeting of the Orthopedic Research Societies of the USA, Japan and Canada in Banff, Alberta, Canada, October, 1991.     

Facial nerve reconstruction in neurofibromatosis 2

Summary Between 1979 and 1989, 13 patients with neurofibromatosis 2 underwent reconstructions of the facial nerve after removal of bilateral acoustic or facial neurinomas. Seven patients received hypoglossal-facial nerve anastomosis, and five reveived sural nerve grafting in the cerebellopontine angle. End-to-end anastomosis and intracranial-intratemporal sural grafting were performed for one patient each, respectively. Re-innervation was seen in all cases. The results were good in 11 cases. Two patients presented with poor results due to development of neurinomas close to the site of the nerve reconstruction. The importance of reconstructive surgery in patients with neurofibromatosis is stressed. The problems regarding failure of re-innervation in some cases and difficulties in their management are discussed.     

鼻部不同部位缺损的修复

目的：探讨鼻部分或全部缺损的手术修复。方法：根据鼻部不同范围的缺损选择不同的方式进行修复，包括邻近皮瓣、岛状皮瓣、复合组织游离移植等。结果：31例鼻部缺损组织瓣修复中鼻唇沟皮瓣13例，邻近滑行皮瓣8例，额部岛状皮瓣5例，耳廓复合组织游离移植5例均成活。术后鼻外形均满意。结论：鼻缺损修复方式较多，应根据缺损的部位，范围选择不同的修复方式。     

Reconstruction of complex and unusual defects of the thoracic wall

Summary From 1981 to. 1989, a total of 13 procedures were performed on 12 patients requiring complex reconstructions of the thoracic wall. The most common cause of these defects was cancer. Muscle flaps remain the treatment of choice for thoracic wall reconstruction and have been used in 10 cases. Microsurgical tissue transfer opens even larger therapeutic perspectives. A team approach is recommended.     

控制肾血管的肾脏重建治疗重度肾外伤(附15例报告)

目的：提高肾外伤手术治疗的肾单位保存率。方法：采用早期控制肾血管，必要时阻断肾血管重建伤肾的方法，治疗重度肾外伤l5例。结果：5例行肾修补术，4例行肾部分切除术，2例行肾静脉修补术，4例行肾切除术，肾切除率26．3％。结论：控制肾血管的肾脏重建术能有效减少肾脏切除率，是手术治疗肾外伤的理想方法。     

Dynamic MRI with projection reconstruction and KWIC processing for simultaneous high spatial and temporal resolution.

A method for dynamic imaging in MRI is presented that enables the acquisition of a series of images with both high temporal and high spatial resolution. The technique, which is based on the projection reconstruction (PR) imaging scheme, utilizes distinct data acquisition and reconstruction strategies to achieve this simultaneous capability. First, during acquisition, data are collected in multiple undersampled passes, with the view angles interleaved in such a way that those of subsequent passes bisect the views of earlier ones. During reconstruction, these views are weighted according to a previously described k-space weighted image contrast (KWIC) technique that enables the manipulation of image contrast by selective filtering. Unlike conventional undersampled PR methods, the proposed dynamic KWIC technique does not suffer from low image SNR or image degradation due to streaking artifacts. The effectiveness of dynamic KWIC is demonstrated in both simulations and in vivo, high-resolution, contrast-enhanced imaging of breast lesions.     

单侧唇裂功能性修复320例护理体会

目的:探讨单侧唇裂功能性修复的护理特点和方法。方法:对我院320例行单侧唇裂功能性修复患儿的护理行回顾性分析和总结。结果:患儿及家属能积极配合,患儿术后恢复良好,家属满意。结论:在常规护理的基础上,患儿特别是家属对疾病和手术方案的认识将对手术和护理效果产生重要影响。     

全喉切除改良气管-咽吻合Ⅰ期发声重建术

目的：探讨全喉切除Ⅰ期发声重建术的改进术式。方法：采用低位气管切开，全喉切除，食管前壁黏膜重建声门，气管切口处造瘘．颈段气管上提并缩窄吻合于舌根的方法行全喉切除及Ⅰ期发声重建木35例。结果：33例(94．29％）术后获得了不同程度的发声功能．不能发声者仅2例(5．71％)。全部患者术后均可经口进食，未出现严重的影响生存质量的误咽。结论：与以往的发声重建术相比，本术式具有发声成功率高、发声质量良好、误咽率低等优点，且无须置人人工发声装置．值得推广。     

Artificial trachea reconstruction with two-stage approach using memory-alloy mesh

Artificialtrachealprosthesisisnowachallengetotheentiresurgicalfieldallovertheworld Previously ,allkindsofprosthesiswere“innerstent”thatcouldnotbeintegratedwithnativetrachea Sincethereisaninterfacebetweensmoothsurfaceofthe prosthesisandlivingtissues,andtheinnersideoftheprosthesisisnotcoveredwithlivingmembrane,infectionsalwayshappenaroundtheprosthesis Wethendevelopedanewtechnique,whichcombinedmemory alloymeshwithtraditionaloperativeprocedures Memory alloymeshisextensible,flexibleandcanmaintain…