> ## 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.

# Sufficient Knee Flexion

> Binary indicator of whether knee flexion is sufficient (1) or not (0) during the single-leg squat.

## Technical Details

* **Variable Type:** Discrete Metric
* **Data Type:** Boolean (binary)
* **Units:** 1 = sufficient, 0 = insufficient
* **Column Name:** (implementation-specific; may be unset in documentation)
* **Aggregation:** rate
* **Precision:** 0
* **Optimal Direction:** Higher is better
* **Measurement:** Assessment of whether the stance-leg knee achieves sufficient flexion (threshold = 60 degrees) during the single-leg squat

## Description

Sufficient knee flexion is a binary metric used in the single-leg squat to indicate whether the athlete achieved adequate knee flexion (at least 60 degrees) on the stance leg.
It complements continuous [Peak Knee Flexion](/biomechanics/activities/squat/metrics/peak-knee-flexion) for pass/fail or screening use.

## Use Cases

* Single-leg squat quality and depth
* Screening and normative comparison
* Protocol compliance (e.g., "squat to 60°")