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Related Concept Videos

Inequalities01:28

Inequalities

Inequalities express mathematical relationships where two values are not equal and are compared using symbols such as <, >, ≤, or ≥. These expressions define a range of possible solutions rather than a single value. Interval notation provides a concise way to express these solution sets, especially when the variable spans a continuous range. An open interval, written as (a, b), excludes the endpoints, while a closed interval [a, b] includes them. There are also half-open intervals, such...
Application of Nonlinear Inequalities01:29

Application of Nonlinear Inequalities

A nonlinear inequality describes a comparison involving an expression that curves or behaves more complexly than a straight line. These inequalities often appear in forms that include squares, products, or variables in the denominator.To solve such an inequality, one starts by rewriting it so that zero appears on one side. For example, the inequality:  can be factored as: This form makes it easier to identify the values that cause the expression to equal zero. In this case, the key values are 3...
Absolute Value Inequalities01:23

Absolute Value Inequalities

The absolute value is a mathematical tool that represents the distance of a number from zero on the number line, regardless of its sign. In the context of inequalities, absolute value expressions help define a range of permissible values or boundaries for a variable. These inequalities are commonly used in scientific modeling and data interpretation, where variability within or beyond a certain threshold must be captured precisely.An absolute value inequality of the form ∣x∣ ≤ a, where a ≥ 0,...
Interference: Path Lengths01:10

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Euler&#39;s Formula to Columns with Other End Conditions01:15

Euler's Formula to Columns with Other End Conditions

Euler's formula is very important in the field of structural engineering, providing a foundation for understanding the critical loading conditions of pin-ended columns. This formula links the modulus of elasticity, the moment of inertia of the cross-section, and the column's length, offering a precise calculation of the critical load at which a column is prone to buckling.
One-Way ANOVA: Unequal Sample Sizes01:15

One-Way ANOVA: Unequal Sample Sizes

One-way ANOVA can be performed on three or more samples of unequal sizes. However, calculations get complicated when sample sizes are not always the same. So, while performing ANOVA with unequal samples size, the following equation is used:

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Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion
08:19

Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion

Published on: January 15, 2016

Leg length inequality.

C R Sharpe

    Canadian Family Physician Medecin De Famille Canadien
    |February 2, 2011
    PubMed
    Summary
    This summary is machine-generated.

    Leg length inequality is common and can cause significant pain. Measuring leg length and correcting it with shoe modifications can provide substantial pain relief and is cost-effective.

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    Published on: September 14, 2017

    Area of Science:

    • Orthopedics
    • Musculoskeletal Health
    • Biomechanical Analysis

    Background:

    • Leg length inequality (LLI) is a prevalent musculoskeletal abnormality.
    • LLI is associated with conditions such as low back pain, hip osteoarthritis, and scoliosis.
    • Higher incidence of LLI observed in patients with low back pain (13%-22%) compared to asymptomatic individuals (7%).

    Purpose of the Study:

    • To highlight the clinical significance of leg length inequality.
    • To emphasize the importance of routine leg length measurement in patients with specific pain complaints.
    • To underscore the potential benefits and cost-effectiveness of correcting LLI.

    Main Methods:

    • Review of existing literature on leg length inequality.
    • Analysis of prevalence data in symptomatic and asymptomatic populations.
    • Evaluation of treatment outcomes and cost-effectiveness of interventions.

    Main Results:

    • Clinically significant LLI is defined as exceeding half an inch (12 mm).
    • LLI is a frequent finding in individuals experiencing low back pain.
    • Shoe modification is an effective method for correcting LLI and alleviating pain.

    Conclusions:

    • Routine measurement of leg length is recommended for patients with low back pain, hip pain, and atypical abdominal pain.
    • Correction of LLI through shoe modification can lead to significant pain relief.
    • Intervention for LLI is a potentially cost-effective strategy in managing musculoskeletal pain.