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相关概念视频

Accessory Structures of the Skin: Nails01:05

Accessory Structures of the Skin: Nails

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Nails are one of the important accessory structures of the skin. They are hard, protective structures that cover the dorsal surface of the distal phalanges of fingers and toes. Nails are composed of specialized keratinized cells and serve various functions, including protection, sensation, and manual dexterity.
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
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Plastic Deformations01:19

Plastic Deformations

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
129
Moment of a Force: Problem Solving01:29

Moment of a Force: Problem Solving

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Understanding the scalar formulation of the moment of a force and applying it correctly through problem-solving is crucial in designing and analyzing mechanical systems. Here are the steps for problem-solving with the moment of a force:
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Fractures: Bone Repair01:27

Fractures: Bone Repair

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Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the...
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Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

288
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
288
Deformation of Member under Multiple Loadings01:11

Deformation of Member under Multiple Loadings

165
When a rod is made of different materials or has various cross-sections, it must be divided into parts that meet the necessary conditions for determining the deformation. These parts are each characterized by their internal force, cross-sectional area, length, and modulus of elasticity. These parameters are then used to compute the deformation of the entire rod.
In the case of a member with a variable cross-section, the strain is not constant but depends on the position. The deformation of an...
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An Intramedullary Locking Nail for Standardized Fixation of Femur Osteotomies to Analyze Normal and Defective Bone Healing in Mice
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钉指甲变形 钉指甲变形

Marie-Anne Poumellec1, Olivier Camuzard2, Christian Dumontier3

  • 1Clinique Saint-François, 10 Boulevard Pasteur, 06000 Nice, France.

Hand surgery & rehabilitation
|January 27, 2024
PubMed
概括

指尖截肢后的甲形导致了显著的功能和美学问题. 本综述分析了手术技术,以解决这个复杂的问题,帮助临床决策.

科学领域:

  • 手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手术手 ...
  • 重建性手术是一种重建性手术.
  • 整形外科 整形外科 整形外科

背景情况:

  • 甲形是指尖截肢后的常见并发症,影响美学和功能.
  • 缺乏骨支会加剧这种形,可能导致进一步的并发症,包括手指的完整截肢.
  • 现有的手术正方法具有挑战性,仅有有限的发表病例系列.

研究的目的:

  • 系统地审查和比较各种手术技术,以纠正钉形指尖截肢后的指甲形.
  • 评估每个重建方法的结果和局限性.
  • 为临床医生提供指导,帮助他们为个别患者选择最合适的手术策略.

主要方法:

  • 关于指甲形纠正的已发表技术的全面文献搜索.
  • 对报告结果的分析,包括功能和美学结果.
  • 软组织增强,局部骨增强和脚转移方法的比较.
关键词:
爪子-指甲 爪子-指甲板是可以使用的.一个钉钉的钉子.微手术 微手术是一种微手术.爪子 爪子 钉子嘴的形变形外科手术 手术手术

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Treatment with Locking Intramedullary Nailing for Intertrochanteric Fracture of the Femur Utilizing a New Awl with a Distal Positioner
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Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
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相关实验视频

Last Updated: Jul 4, 2025

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Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects
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主要成果:

  • 软组织增强提供了简单性,但缺乏骨支持.
  • 用局部片增强骨受到远端 phalange 遗留物的有限尺寸的限制.
  • 脚转移是一个可行的选择,但在技术上要求很高,案例报告有限.

结论:

  • 纠正钉形是手术上复杂的,没有单一的普遍优越的技术.
  • 重建的选择取决于诸如骨支持的可用性和外科医生的专业知识等因素.
  • 需要进一步的研究和更大的系列来优化指尖重建的治疗策略.