相关实验视频

Updated: Jan 29, 2026

Author Spotlight: Exploring Regeneration in Axolotls Through Insights in Cellular and Molecular Mechanisms, Bone Healing, and Implications for Human Therapies

Author Spotlight: Exploring Regeneration in Axolotls Through Insights in Cellular and Molecular Mechanisms, Bone Healing, and Implications for Human Therapies

Published on: April 12, 2024

距离大腿骨切除术中内部固定板的螺丝插入方向:使用轴向计算机断层扫描成像的评估

Fumiyoshi Kawashima¹, Ryuichi Nakamura², Akira Okano²

¹Department of Orthopaedic Surgery, Showa Medical University Fujigaoka Hospital, 1-30 Fujigaoka, Aoba Ward, Yokohama, Kanagawa 227-8501, Japan - Joint Preservation and Sports Orthopaedics Center, Harue Hospital, 65-7 Haruecho Haribara, Sakai, Fukui 919-0476, Japan.

|January 28, 2026

概括

在距离大腿骨切除术 (DFO) 中,远距离螺丝的后方角度允许更深的放置. 中间侧提供有限的后方角,而侧侧侧提供更广泛的范围,以改善螺丝固定.

科学领域:

整形外科手术整形外科手术
生物机械分析分析
手术解剖学的手术解剖学

背景情况:

远骨切除术 (DFO) 是一种用于纠正膝盖形的外科手术.
对于成功的结果,DFO固定的稳定性至关重要.
固定板中的更长的远端螺丝可能会提高稳定性.

研究的目的:

为了评估DFO中远端螺丝的插入方向.
为了确定螺丝的后方角是否能够更深地放置.
为了比较中间和侧面DFO之间的螺丝角潜力.

主要方法:

对47个经过DFO (30个中枢闭DFO [MCWDFO],17个侧侧闭DFO [LCWDFO]) 的关膝盖的术后CT图像进行分析.
在与螺丝平行的横截面上测量螺丝角度参数 (AnA,AnB,AnC).
与骨皮层相对的后方角的计算 (AnP).

主要成果:

MCWDFO组:AnA 10.9°,AnB 27.0°,AnC 9.2°,AnP -2.6°. 这是一个很大的问题.
LCWDFO组:AnA 18.2°,AnB 30.4°,AnC 16.1°,AnP -0.2°. 在这个时间段里,我们可以看到
与中间的DFO相比,侧面的DFO显示出更大的后方角化潜力.

结论:

中部股骨表面的倾斜限制了后面的螺丝角.
侧腿部表面的更平坦的轮允许更大的后方螺丝角.
通过后方角度优化螺丝放置可以提高DFO的固定稳定性.

关键词:

骨头螺丝骨头螺丝远距离的股骨骨切除术.骨切除术 (osteotomy) 是一个骨切除术.板块固定方式板块固定方式断层扫描 (Tomography) 是一个专业的技术.电脑计算的X射线成像

更多相关视频

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

相关概念视频

Evaluating Limits by Direct Substitution

Evaluating Limits by Direct Substitution

In the analysis of functions that represent continuous physical phenomena, it is often necessary to determine the output value as the input approaches a specific point. When a combination of algebraic terms defines the function and exhibits no discontinuities or abrupt changes near the point of interest, the limit of the function can be evaluated directly. This process, known as direct substitution, involves replacing the variable in the expression with the value it approaches.Direct...

Screw: Problem Solving

Screw: Problem Solving

In mechanical engineering, the interaction between a threaded screw shaft and a plate gear involves analyzing the resisting torque on the plate gear that can be overpowered when a specific torsional moment is applied to the shaft. To better comprehend this concept, consider a generic situation with a threaded screw shaft with a given mean radius and lead and a plate gear with a specified mean radius. The coefficient of static friction between the screw and gear is also provided.
To evaluate the...

Self-Locking Screw

Self-Locking Screw

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. One of the key features that can make a screw jack more effective and reliable is its self-locking capability.
A square-threaded screw jack carrying a load is considered self-locking if the screw retains its position even after the moment applied to it is removed.

Internal Energy

Internal Energy

The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial.

Axial and Appendicular Muscles

Axial and Appendicular Muscles

Skeletal muscles, the key players in our body's movement, can be classified into two groups based on their location and function: axial muscles and appendicular muscles. These classifications reflect the primary roles the muscles play in the body's structure and movement.
Axial Muscles
Axial muscles, situated along the body's midline, are intricately connected to the axial skeleton, which includes the skull, spine, ribs, and sternum. These muscles facilitate facial expressions and...

Internal Receptors

Internal Receptors

Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.