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Related Concept Videos

Fractures: Bone Repair01:27

Fractures: Bone Repair

6.7K
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...
6.7K
Stress-Strain Diagram - Brittle Materials01:24

Stress-Strain Diagram - Brittle Materials

5.2K
Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
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Microcracking in Concrete01:20

Microcracking in Concrete

549
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
549
Fatigue01:21

Fatigue

1.1K
Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
1.1K
Flail Chest-I01:24

Flail Chest-I

1.0K
Overview of Flail Chest
Flail chest is a severe and potentially life-threatening condition characterized by the fracture of three or more adjacent ribs in multiple places. It is most commonly caused by direct impacts and trauma, such as motor vehicle accidents or injuries from a steering wheel impact. It can also occur due to falls in elderly individuals with osteoporosis, or assaults involving sharp objects.
Pathophysiology
The pathophysiology of flail chest is complex, involving fractures of...
1.0K
Bone Markings01:26

Bone Markings

8.8K
Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
8.8K

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Related Experiment Video

Updated: Apr 4, 2026

Pseudofracture: An Acute Peripheral Tissue Trauma Model
10:08

Pseudofracture: An Acute Peripheral Tissue Trauma Model

Published on: April 18, 2011

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[Old fracture].

Xinbao Wu1, Yu Jiang2

  • 1Department of Trauma Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China.

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|September 12, 2015
PubMed
Summary
This summary is machine-generated.

Old fractures, including delayed union and nonunion, result from treatment delays. Early intervention with conservative or operative methods, like bone grafting, is crucial for patient recovery and function.

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Fracture Apparatus Design and Protocol Optimization for Closed-stabilized Fractures in Rodents
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Area of Science:

  • Orthopedic surgery
  • Traumatology
  • Bone healing biology

Context:

  • Old fractures are defined as those over 3 weeks old.
  • Complications include delayed union, malunion, and nonunion.
  • These complications significantly impact patients' quality of life and economic stability.

Purpose:

  • To define and differentiate old fracture complications: delayed union, malunion, and nonunion.
  • To identify key etiological factors, emphasizing instability and compromised blood supply.
  • To outline current treatment strategies, including conservative and operative interventions.

Summary:

  • Delayed union and nonunion result from delayed treatment, with instability and poor blood supply being primary causes.
  • Malunion involves fracture consolidation in a deformed or misaligned position, affecting length, angulation, rotation, or translation.
  • Treatment aims to promote healing, restore alignment, and improve function, with autogenous cancellous bone graft and fixation as a surgical gold standard.

Impact:

  • Early intervention is essential to mitigate patient suffering and economic burden.
  • Effective treatment can restore limb alignment and function.
  • Understanding these complications aids in developing better therapeutic approaches for fracture healing.