STATIC FORCE AND STABILITY ANALYSIS OF THE ELBOW

肘部静力及稳定性分析

• 批准号: 2006068
• 负责人: KAI-NAN AN
• 金额: $ 13.64万
• 依托单位: MAYO CLINIC ROCHESTER
• 依托单位国家: 美国
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-12-15 至 1998-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/2006068
• 关键词: arthroplasty; biomechanics; elbow; human tissue; joint prosthesis; muscle function

DESCRIPTION (Adapted from the applicant's Abstract): The elbow is one of the few remaining joints for which the orthopedic surgeon does not possess the expertise or the information necessary to adequately select the patients amenable to joint replacement, or more importantly, the optimum implant for a given circumstance. The overall goal of the proposed study is to address the remaining problems associated with elbow reconstruction and replacement. The investigation will include implants that appear to have some promising applications: capitellocondylar resurfacing device (Ewald), ERS Surface Replacement System (Pritchard), Norway Elbow (Risung), and Souter Strathclyde Arthroplasty (U.K.). The continuing problem with the resurfacing device is instability, and thus both static and dynamic elements of their function will be assessed. Kinematic and tendon excursion data from cadaveric elbow specimens with prosthetic replacements will be collected under various muscle loading and valgus varus and axial rotational stresses. Joint constraints and laxity with different levels of soft tissue reconstruction and variations in implant placement will also be evaluated. Moment arm changes throughout the arc of motion will be obtained for three major flexors and extensors about the prosthetic elbow joint. Three hypotheses will be tested. The first is that the stability of the resurfacing arthroplasty is highly dependent on the capsuloligamentous condition. The second is that implant component malalignment will increase laxity of the joint. The third is that the moment arm balance of flexor and extensor muscles after implant replacement will be the same as those of the anatomic joint. It is anticipated that information obtained from this study will directly affect surgical guidelines for patient selection with reference to quality of bone and the presence or absence of static stabilizing elements. Furthermore, it will provide the surgeon with a basis for making a selection from the currently available implant designs. Finally, and of particular importance, the proposed studies should provide a standard for judging the degree of success of surgical techniques reported by various surgeons and centers throughout the world.

描述（改编自申请人的摘要）：手肘是一个 剩下的几个关节，整形外科医生不 拥有适当选择所需的专业知识或信息 适合关节置换的患者，或者更重要的是， 最佳植入物。的总体目标 拟议的研究是为了解决与以下方面有关的剩余问题： 肘关节重建和置换。评估包括 植入物似乎有一些有前途的应用： 肱骨髁表面置换器械（Ewald），ERS表面置换 系统（Pritchard）、挪威肘关节（Risung）和Souter Strathclyde 关节成形术（英国）。表面重塑装置的持续问题 是不稳定的，因此，静态和动态的元素， 功能将被评估。运动学和肌腱偏移数据来自 将收集带有假体置换的尸体肘标本 在各种肌肉负荷和外翻、内翻和轴向旋转下 压力关节的约束和松弛程度与软 组织重建和植入物放置的变化也将 评估。在整个运动弧中，力臂的变化将是 获得关于假体的三个主要屈肌和伸肌 肘关节将检验三个假设。首先是 表面置换术的稳定性高度依赖于 囊状韧带条件。第二个是植入物组件 对线不良会增加关节的松弛。第三是 植入后屈伸肌力臂平衡 置换将与解剖关节的置换相同。是 预计从本研究中获得的信息将直接 影响患者选择的手术指南， 骨质和是否存在静态稳定 元素此外，它将为外科医生提供一个基础， 从当前可用的植入物设计中进行选择。 最后，特别重要的是，拟议的研究应 为判断手术成功的程度提供了一个标准 各种外科医生和中心报告的技术 世界

项目成果

Kinematics and functional characteristics of the Pritchard ERS unlinked total elbow arthroplasty.

Pritchard ERS ​​无连接全肘关节置换术的运动学和功能特征。

• DOI: 10.1016/s1058-2746(02)86885-9
• 发表时间: 2003
• 期刊: Journal of shoulder and elbow surgery
• 影响因子: 3
• 作者: Ramsey,Matthew;Neale,PatriciaG;Morrey,BernardF;O'driscoll,ShawnW;An,Kai-Nan
• 通讯作者: An,Kai-Nan

An anatomic and mechanical study of the interosseous membrane of the forearm: pathomechanics of proximal migration of the radius.

前臂骨间膜的解剖学和力学研究：桡骨近端迁移的病理力学。

• DOI: 10.1016/0363-5023(89)90017-8
• 发表时间: 1989
• 期刊: The Journal of hand surgery
• 作者: Hotchkiss,RN;An,KN;Sowa,DT;Basta,S;Weiland,AJ
• 通讯作者: Weiland,AJ

Intersegmental elbow joint load during pushup.

俯卧撑期间的节段间肘关节负荷。

• 发表时间: 1992
• 期刊: Biomedical sciences instrumentation
• 作者: An,KN;Chao,EY;Morrey,BF;Donkers,MJ
• 通讯作者: Donkers,MJ

Malrotation of the humeral component of the capitellocondylar total elbow replacement is not the sole cause of dislocation.

肱骨小头髁全肘关节置换术的肱骨旋转不良并不是脱位的唯一原因。

• DOI: 10.1002/jor.1100120509
• 发表时间: 1994
• 期刊: Journal of orthopaedic research : official publication of the Orthopaedic Research Society
• 作者: Itoi,E;King,GJ;Neibur,GL;Morrey,BF;An,KN
• 通讯作者: An,KN

Origin of the medial ulnar collateral ligament.

内侧尺侧副韧带的起点。

• DOI: 10.1016/0363-5023(92)90135-c
• 发表时间: 1992
• 期刊: The Journal of hand surgery
• 作者: O'Driscoll,SW;Jaloszynski,R;Morrey,BF;An,KN
• 通讯作者: An,KN