> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uplift.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Max Ankle Flexion Angle

> Maximum dorsiflexion angle of the right or left ankle during the forward lunge.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Float
* **Units:** degrees (°)
* **Column Name:** `lunge_forward_max_right_ankle_flexion_angle`, `lunge_forward_max_left_ankle_flexion_angle`
* **Aggregation:** mean
* **Precision:** 0
* **Optimal Direction:** Higher is better
* **Measurement:** Maximum ankle dorsiflexion from [Initiation](/biomechanics/activities/lunge/events/initiation) to [End](/biomechanics/activities/lunge/events/end)

## Description

Max ankle flexion angle is the peak dorsiflexion achieved at each ankle during the lunge.
The 90° offset normalizes the angle so that 0° represents neutral (perpendicular shank–foot alignment).
Greater dorsiflexion reflects better ankle mobility, which supports deeper and more controlled lunge positions.
Both sides are reported regardless of footedness.

## Use Cases

* Ankle dorsiflexion mobility assessment
* Bilateral ankle mobility comparison
* Identifying ankle restrictions limiting lunge depth or form