DC 欄位 | 值 | 語言 |
dc.contributor.author | 呂東武 | zh_TW |
dc.creator | 呂東武 | - |
dc.date | 2005-07-31 | zh_TW |
dc.date.accessioned | 2006-07-26T02:56:01Z | - |
dc.date.accessioned | 2018-06-29T00:53:16Z | - |
dc.date.available | 2006-07-26T02:56:01Z | - |
dc.date.available | 2018-06-29T00:53:16Z | - |
dc.date.issued | 2005-07-31 | - |
dc.identifier | 932213E002118 | en |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/22396 | - |
dc.description.abstract | 退化性關節炎病人接受全人工膝
關節置換手術後,如何恢復其日常動
作的功能,以提高其生活品質,是現
階段新型全人工膝關節設計一個相當
重要的課題。以往由於道德上的考量
以及技術上的限制,直接量取人工膝
關節移動時相對的角度及兩元件接觸
點的位置有其困難,因此本研究旨在
發展一個整合動態X 光攝影系統、動
作分析系統、測力板以及數學模型分
析的新技術以探討活體人工膝關節之
生物力學,進而提供人工膝關節在從
事單關節運動與功能性運動時,更精
確與更好之運動學與動力學描述。由
於本研究之受試者兩膝分別植入後十
字韌帶置換(posterior cruciate
substituting, PS)型與後十字韌帶保留
(posterior cruciate retaining, CR)型之人
工膝關節,故可避免受試者間各項變
數干擾研究結果。提供了一個探討解
釋這兩種不同類型之膝關節設計的絕
佳機會,對於瞭解後十字韌帶對於人
工膝關節之功能有所幫助。本計畫共
分二階段進行。
第一階段(年)包含建立一個整合
動態X 光攝影系統以及動作分析儀器
設備包括紅外線攝影機、測力板以及
肌電圖等,用以量測完整運動學與動
力學資料的系統。實驗記錄同時植入
PS 型與與CR 型人工膝關節之病人進
行之主動、被動單關節動作及功能性
動作包括步行、做到站等之過程。利
用實驗資料進行下肢生物力學分析,
並特別著重於脛骨股骨關節之力學交
互作用。
第二階段(年)旨在發展一個新的
利用電腦模型與動態X 光資料評估三
維人工膝關節運動學之最佳化方法。
此一新方法將與兩種文獻中既有的方
法比較,透過電腦模擬與驗証實驗,
評估三者的精度與信度。
藉由驗證實驗的結果證實,本研
究結果相當精確。目前本研究所提出
的量測方法是唯一能在非侵入的狀況
下,不受皮膚移動誤差影響而精確測
得人工膝關節患者動態關節三維運動
學及力學的方法。
經過臨床實驗後,透過人工膝關
節患者主動運動、被動運動及功能性
動作之測試了解到人工膝關節患者與
正常人膝關節確有不同的運動學行
為,導致膝關節力學模式跟著改變,
即使保留了後十字韌帶的患者也因其
無法發揮韌帶的正常功能,導致膝關
節運動受限,影響到人工膝關節的受
力狀況。
本計畫全部依據既定時程完成一
個新的三維全人工膝關節量測技術,
並將之應用到全人工膝關節元件相對
運動的測量,所得結果與文獻及全人
工膝關節動作分析實驗數據均相當一
致。本年度計畫成果除有助了解膝關
節運動時韌帶受力及各種不同的擷抗
作用情形,臨床上能幫助置換人工膝關節時更多的資料與改進之處。 | zh_TW |
dc.description.abstract | Total knee arthroplasty has been the
main choice of treatment for advanced
degenerative knee osteoarthritis over the
last few decades. It is essential to
provide full functional performances to
patients on total knee replacement (TKR)
design. Due to ethical considerations
and technical limitation, direct
measurement of angles during motion
and contact points of two components in
the Total knee is difficult.
The main purposes of the project
are to develop a new technique that
integrates video-fluoroscopy systems,
motion analysis systems, forceplates and
electromyography (EMG), as well as
mathematical modeling and analysis for
in vivo study of total knee biomechanics,
providing more accurate and better
descriptions of the TKR kinematics and
kinetics during isolated joint movement
and functional activities. Subjects with
PS (posterior cruciate substituting) type
TKR in one leg and CR (posterior
cruciate retaining) type in another in the
present study offer an exceptional
opportunity for study of these two
different types of knee designs without
inter-subject variations, which is helpful
for the clarification of the function of
posterior cruciate ligament (PCL) in
TKR’s. This project will be carried out
in two parts (years).
In the first part (year) of the project,
a complete kinematic and kinetic
measurement system integrating a
video-fluoroscopy system and motion
analysis equipments, namely infrared
cameras, forceplates and EMG, was
established. Patients with both PS and
CR type TKR’s performed passive and
active isolated joint movements and
functional activities including gait and
sit-to-stand while kinematic and kinetic
data were measured. Kinematic and
kinetic analysis of the lower limb with
special attention on the interaction of the
tibiofemoral was performed.
In the second part, a new
optimization method for model-based
estimation of the three-dimensional
kinematics of TKR using dynamic
fluoroscopic data was developed.
Comparisons of the accuracy and
reliability of the new method with two
existing methods was performed based
on computer simulations and
experimental data.
Present study proposed a new
technique for improving the accuracy of
3D pose estimation and accelerate
computational process without manual
operation. All 2D real data and
projection silhouettes are warped to stick
on 3D spherical surface before the
matching process. Therefore, template
matching based on shape invariant can
be applied for perspective projection
system and can divide 6 degrees of
freedom (DOF) of model to calculate
respectively.
The results from the current study
showed that the majority of patients
experienced kinematics is not similar to
those of a normal knee. However, the
extent of lateral femoral condyle
posterior rollback and the extent of axial
rotation were less. | en |
dc.format | application/pdf | en |
dc.format.extent | 570173 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language | zh-TW | - |
dc.language.iso | zh_TW | zh_TW |
dc.publisher | 臺北市:國立臺灣大學醫學工程學研究所 | zh_TW |
dc.rights | 國立臺灣大學醫學工程學研究所 | zh_TW |
dc.title | 結合動作分析及動態X光量測技術研究活體人工膝關節之生物力學(2/2) | zh_TW |
dc.type | report | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/22396/1/932213E002118.pdf | - |
dc.coverage | 計畫年度:93;起迄日期:2004-08-01/2005-07-31 | zh_TW |
item.fulltext | with fulltext | - |
item.languageiso639-1 | zh_TW | - |
item.openairecristype | http://purl.org/coar/resource_type/c_93fc | - |
item.cerifentitytype | Publications | - |
item.openairetype | report | - |
item.grantfulltext | open | - |
crisitem.author.dept | Biomedical Engineering | - |
crisitem.author.orcid | 0000-0003-3458-6049 | - |
crisitem.author.parentorg | College of Medicine | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 醫學工程學研究所
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