The evaluation of knee tendinitis begins with a history and physical exam.

Physical findings in someone with knee tendinitis may include:

• Pain on range of motion of the knee
• Redness to the skin over the tendon
• Knee swelling
• Knee tenderness

The diagnosis of knee tendinitis is usually made during physical exam.

Tests that may be used to evaluate knee tendinitis include:

• Knee x-ray
• Extremity ultrasound
• MRI scan of the knee