An elbow sprain is stretching or tearing of the ligaments that stabilize the elbow. Ligaments are strong bands of tissue that cross joints and connect bones to each other.

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Elbow sprains may be caused by:
- Forced twisting of the arm
- Falling on an outstretched arm
- A blow to the elbow
A risk factor is something that increases your chance of getting a disease, condition, or injury.
Risk factors for an elbow sprain:
- Playing certain sports, such as gymnastics
- Poor coordination
- Poor balance
- Inadequate flexibility and strength in muscles and ligaments
- Loose joints
The doctor will ask about your symptoms and how you injured your elbow. The doctor will examine your elbow to assess the stability of the joint and the severity of the injury.
Tests may include:
- X-rays
—a test that uses radiation to take a picture of structures inside the body, especially the bones. You may have an x-ray to make sure that no bones are broken.
- MRI scan
—a test that uses magnetic waves to make pictures of structures inside the body. You might have a scan to see if a ligament has torn completely (but rarely needed).
Elbow sprains are graded according to their severity.
- Stretching and some microtearing of ligament tissue
- Partial tearing of ligament tissue
- Mild instability of the joint
- Severe or complete tearing of ligament tissue
- Significant instability of the joint
Elbow sprains usually occur from accidents that cannot be prevented.