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Related Concept Videos

Distance Corrections01:15

Distance Corrections

290
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
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Plastic Deformations01:19

Plastic Deformations

465
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...
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Plastic Deformations01:14

Plastic Deformations

444
It is essential to understand how structural members behave under plastic deformation when the bending stress exceeds the material's yield strength. This state of deformation permanently alters the shape of the member, in contrast to the linear elastic behavior observed before yielding. The strain at any point in the member is expressed in terms of maximum strain. Notably, the neutral axis, which coincides with the centroid during elastic bending, shifts away from the centroid under plastic...
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Power Factor Correction01:20

Power Factor Correction

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The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
539
Temperature Dependent Deformation01:12

Temperature Dependent Deformation

401
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added...
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Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

521
When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
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Related Experiment Video

Updated: Feb 3, 2026

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
08:15

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

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Percutaneous hardware free corrective osteotomy for bunionnette deformity.

Ben Molenaers, Jan Vanlommel, Patrick Deprez

    Acta Orthopaedica Belgica
    |November 8, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Percutaneous fifth metatarsal osteotomy effectively corrects bunionette deformities with minimal complications. This minimally invasive surgery offers significant pain relief and functional improvement, comparable to traditional methods but with less soft tissue damage.

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    Area of Science:

    • Orthopedic Surgery
    • Podiatric Surgery
    • Foot and Ankle Surgery

    Background:

    • Bunionette deformities often require surgical intervention when conservative treatments fail.
    • Minimally invasive surgical techniques are emerging as promising alternatives for treating bunionette deformities.

    Purpose of the Study:

    • To evaluate the efficacy and safety of a strictly percutaneous fifth metatarsal osteotomy for correcting bunionette deformities.
    • To assess clinical outcomes using the American Orthopaedic Foot & Ankle Society (AOFAS) scale, Visual Analogue Scale (VAS), and Coughlin classification.

    Main Methods:

    • Retrospective review of 20 patients undergoing percutaneous distal oblique fifth metatarsal osteotomy.
    • Postoperative care included corrective taping and full weight-bearing in a post-op shoe for 5-6 weeks.
    • Patients were assessed clinically and radiographically at a mean follow-up of 27.05 months.

    Main Results:

    • Significant improvement in AOFAS scores from a mean of 51 to 91.6.
    • 90% of patients achieved good or excellent clinical results with a mean VAS pain score of 0.7/10.
    • Successful radiographic correction of intermetatarsal and metatarsophalangeal angles with no reported complications.

    Conclusions:

    • Percutaneous, hardware-free corrective osteotomy is an effective, reliable, and safe treatment for bunionette deformity.
    • This technique yields results comparable to open and other minimally invasive procedures.
    • It offers advantages including reduced soft tissue damage, shorter operating time, and no need for internal fixation.