1. What is Functional Gait Index (FGI)?

Definition: FGI is a quantitative measure used to assess gait function by comparing the sum of scores to the maximum possible score.

Purpose: It helps healthcare professionals evaluate and quantify a patient's gait performance and functional mobility.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( FGI \) — Functional Gait Index (unitless)
• \( \Sigma\ Scores \) — Sum of all individual scores
• \( Max \) — Maximum possible score (typically 30)

Explanation: The sum of scores is divided by the maximum possible score to get a normalized index between 0 and 1.

3. Importance of FGI Calculation

Details: FGI provides an objective measure to track gait improvement over time, compare patients, and guide rehabilitation decisions.

4. Using the Calculator

Tips: Enter the sum of all individual scores and the maximum possible score (default 30). The sum cannot exceed the maximum score.

5. Frequently Asked Questions (FAQ)

Q1: What does the FGI value indicate?
A: Values closer to 1 indicate better gait function, while lower values suggest greater impairment.

Q2: What's the typical maximum score?
A: Most standard assessments use 30 as the maximum score, but this may vary by assessment tool.

Q3: How is the sum of scores determined?
A: Scores are typically obtained from a standardized gait assessment with multiple items scored 0-3.

Q4: What's a normal FGI range?
A: Healthy individuals typically score above 0.8, but interpretation depends on the specific assessment used.

Q5: Can FGI be greater than 1?
A: No, the sum of scores cannot exceed the maximum score in valid assessments.