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Fractures: Bone Repair

Fractures: Bone Repair

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...

Stress-Strain Diagram - Brittle Materials

Stress-Strain Diagram - Brittle Materials

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...

Fatigue

Fatigue

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...

Bone Disorders

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...

Flail Chest-I

Flail Chest-I

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...

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Related Experiment Video

Updated: Apr 17, 2026

Author Spotlight: Assessing Surgical Frailty with Point-of-Care Ultrasound of Quadriceps Muscles

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Published on: July 26, 2024

Fragility fracture: recent developments in risk assessment.

Terry J Aspray¹

¹Musculoskeletal Unit, Freeman Hospital, Newcastle upon Tyne NE7 7DN, UK and Newcastle University Framlington Place Newcastle upon Tyne NE2 4AB, UK.

Therapeutic Advances in Musculoskeletal Disease

|February 5, 2015

Summary

Many older women with fragility fractures lack osteoporosis by bone mineral density (BMD) criteria. Clinical risk factor (CRF) tools show promise for fracture risk assessment, but require further validation for clinical use.

Keywords:

FRAX®Garvan QFracture fracture risk assessment osteoporosis postmenopausal women

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Area of Science:

Gerontology
Orthopedics
Epidemiology

Background:

Bone mineral density (BMD) is a traditional metric for assessing fracture risk.
Over half of older women experiencing fragility fractures do not meet osteoporosis criteria based on BMD.
Numerous skeletal and nonskeletal clinical risk factors (CRFs) are recognized contributors to fracture.
More than 30 assessment tools utilizing CRFs have been developed for fracture risk or low BMD prediction.

Purpose of the Study:

To review the development and validation of clinical risk factor (CRF) tools for fracture risk assessment.
To evaluate the current utility and future prospects of CRF-based fracture risk prediction tools.
To assess the role of 10-year fracture risk as a metric in clinical decision-making and health economics.

Main Methods:

Systematic review of existing literature on fracture risk assessment tools.
Analysis of the validation status and performance of various CRF-based tools.
Comparison of internationally recognized tools like FRAX®, QFracture, CAROC, and Garvan.

Main Results:

Many CRF tools lack validation against actual fracture incidence.
Tool complexity and the number of CRFs do not guarantee superior performance.
Internationally, FRAX® is widely recommended; other tools like QFracture, CAROC, and Garvan have specific regional or data requirements (e.g., BMD).
The primary utility of current tools is in case-finding for osteoporosis.

Conclusions:

While CRF tools offer a broader assessment beyond BMD, robust validation and calibration are crucial for reliable fracture risk prediction.
10-year fracture risk holds potential as a standardized metric for treatment decisions and health economic analyses.
Further research is needed to ensure the robustness of these tools for independent use in guiding treatment choices, irrespective of BMD measurements.