The ligaments in the arm near the elbow provide stability and connect the bones of the forearm (radius and ulna) to the humerus (upper arm bone). These include the medial collateral ligament, lateral collateral ligament, annular ligament, and quadrate ligament.
Here's a breakdown of the ligaments around the elbow:
Elbow Ligaments
| Ligament | Location | Connection | Function |
|---|---|---|---|
| Medial Collateral Ligament | Inside of the elbow | Ulna to Humerus | Provides stability to the inner side of the elbow, resisting forces that push the forearm outwards relative to the upper arm. |
| Lateral Collateral Ligament | Outside of the elbow | Radius to Humerus | Provides stability to the outer side of the elbow, resisting forces that push the forearm inwards relative to the upper arm. |
| Annular Ligament | Surrounding the radial head (elbow) | Encircles the head of the radius | Holds the radius and ulna together. This allows the radius to rotate during pronation and supination (turning the palm up and down). |
| Quadrate Ligament | Near the radial neck (elbow) | Connects the radial neck to the ulna | Provides stability and helps maintain the radial head's position against the ulna, supporting rotational movement and preventing dislocation during forearm rotation. |
These ligaments work together to ensure proper elbow joint function and stability.
