Comparative Efficacy of Intra-articular vs. MRI-guided Extra-articular Dextrose Injections in Knee Osteoarthritis Management

Osteoarthritis (OA) is a serious worldwide public health concern, and there are several conservative management of knee OA. Evidence showed that intra-articular and extra-articular injections are beneficial for knee OA. Compared with PRP, AmnioFix, exosome, and HA, which are not covered by the health insurance system, dextrose is a readily available and cost-effective substance. There are several choices of imaging modality for recognizing the sites of lesion in knee OA, such as X-ray, ultrasound (US), and magnetic resonance imaging (MRI). MRI is an optimal and accurate imaging choice for visualizing soft tissue as well as deep structures. The MRI findings of knee OA includes cartilage damage, meniscus tear, bone marrow lesions, synovitis, ligamentous lesions, and osteophytes. The detection of bony lesions can aid intraosseous Infiltrations. However, there is no current evidence on the effectiveness of prolotherapy targeting knee OA lesion sites according to MRI findings. Thus, the investigators aim to investigate whether injecting dextrose into MRI-positive lesion sites is more beneficial for knee OA comparing to intra-articular injections.