The elbow joint allows for a variety of movements, primarily flexion-extension and pronation-supination. Here's a breakdown of the typical range of motion, based on the provided reference:
Elbow Joint Movement Ranges
The elbow is not a simple hinge joint; it allows for both bending (flexion and extension) and rotation of the forearm (pronation and supination). Understanding this range of motion is crucial for daily activities, sports, and rehabilitation.
Flexion and Extension
- Flexion: The ability to bend the elbow, bringing the hand towards the shoulder. Typical values range between 130° and 154°.
- Extension: The ability to straighten the elbow. Values typically fall between -6° and 11°. The negative value indicates a slight hyperextension which is a normal variation for some individuals.
Pronation and Supination
These movements refer to the rotation of the forearm:
- Pronation: Rotation of the forearm so that the palm faces downward. Ranges from 75° to 85°.
- Supination: Rotation of the forearm so that the palm faces upward. Ranges from 80° to 104°.
Summary Table of Elbow Range of Motion
| Movement | Range |
|---|---|
| Flexion | 130° - 154° |
| Extension | -6° - 11° |
| Pronation | 75° - 85° |
| Supination | 80° - 104° |
These ranges are general guidelines and can vary slightly from person to person based on factors like age, gender, and physical condition. However, the referenced values provide a useful framework for understanding the typical mechanics of the elbow joint.
