Clinical Study of Novel Diagnostic Techniques for Knee Osteoarthritis

Comparison Between Intra-articular Ultrasound Imaging, Non-invasive Ultrasound Imaging, Quantitative MRI Imaging, Contrast-enhanced CT Imaging and Arthroscopy for Diagnostics of Knee Osteoarthritis

The purpose of this study is to clarify the potential of intra-articular ultrasound imaging, non-invasive ultrasound imaging, quantitative MRI imaging, contrast-enhanced CT imaging and arthroscopy for diagnostics of knee osteoarthritis. All methods will be cross-correlated and compared with the arthroscopic findings.

Inclusion Criteria:

• Kellgren-Lawrence grade = 1-3 or cartilage defect detected in MRI
• Age >= 20 years

Exclusion Criteria:

• Tumor or inflammation in the knee
• Severe general diseases
• Diabetes