関連する実験動画
Updated: Jan 24, 2026

08:42
Retrieval of Mouse Oocytes
Published on: April 28, 2007
28.5K
ユニバーサル2手関節インプラントの破損:回収研究
Thomas J Joyce1, Göksu Kandemir1, Nasri H Zreik2
1School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom.
Journal of wrist surgery
|January 23, 2026
まとめ
ユニバーサル2全手関節形成術は、ポリエチレン損傷により期待外れの長期成績を示した。これは、滅菌の問題と小型インプラントの設計上の欠陥が原因で、コンポーネントの破損につながった。
科学分野:
- 整形外科
- 生体材料科学
- 破壊解析
背景:
- 一般的なインプラントであるユニバーサル2全手関節形成術は、長期的な予後が悪かった。
研究 の 目的:
- 回収されたユニバーサル2全手関節形成術コンポーネントにおけるポリエチレン損傷の根本原因を調査すること。
主な方法:
- 単一施設からの6つのユニバーサル2手関節と2つの追加のポリエチレンコンポーネントの回収分析。
- ポリエチレンコンポーネントのマクロ分析と寸法測定。
- 材料損失の領域を特定するためのin vivoコンポーネント配向との比較。
主要な成果:
- 小型インプラントはより頻繁に再手術が行われ、材料損失は主に尺骨側に発生しました。
- ポリエチレンの破損は、特に小型で薄いベースのサイズにおいて、尺骨側のブラインドホールの基部で発生しました。
- 変色と表面疲労によって示される酸化が観察され、in vivoでの平均期間は13.8年でした。
結論:
- ポリエチレンの破損は、不適切な滅菌と小型コンポーネントを薄くする設計上の欠陥の組み合わせによって引き起こされました。
- ユニバーサル2手関節インプラントを有する患者の継続的な監視が推奨されます。
関連する概念動画
Retrieval
424
Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
424
ER Retrieval Pathway
4.7K
In the secretory pathway, vesicles transport proteins from one cellular compartment to another in forward transport to deliver the protein to its correct location. Occasionally, misfolded proteins and incorrect proteins escape their original compartments, and a retrieval pathway is used to return the escaped proteins to their original compartment.
The ER uses many checkpoints to prevent the entry of incorrectly folded or a resident protein as cargo onto a transport vesicle. These mechanisms...
The ER uses many checkpoints to prevent the entry of incorrectly folded or a resident protein as cargo onto a transport vesicle. These mechanisms...
4.7K
Structural Joints: Synovial Joints
6.5K
Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
6.5K
Structural Joints: Fibrous Joints
3.7K
Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
Suture
All the bones of the skull, except for the mandible, are joined to each other by a fibrous joint called a suture. The fibrous connective tissue found at a suture strongly unites the adjacent skull bones and thus helps to protect the brain and form the face. In...
3.7K
Structural Joints: Cartilaginous Joints
3.9K
As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary...
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary...
3.9K
Joints
35.5K
Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function.
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...
35.5K

