Optional medical device diagnostics – depending on the results of the history, physical examination, and obligatory laboratory parameters – for differential diagnostic clarification.
- Sonography (ultrasound examination) of the affected joint.
- X-ray of the affected joint – if bony involvement is suspected.
- Computed tomography (CT; sectional imaging procedure (X-ray images taken from different directions with computer-based evaluation), particularly well suited for imaging bony injuries) – if bony injuries and additional injuries are suspected.
- Magnetic resonance imaging (MRI; computer-based cross-sectional imaging method (using magnetic fields, that is, without X-rays); particularly well suited for the presentation of soft tissue injuries) of the knee joint – in cases of suspected soft tissue injuries.
- Arthroscopy (arthroscopy) – for unclear effusion.
