Knee Subchondroplasty: MRI Findings of Bone Marrow Lesions, Medial Meniscus Root Tear, and Osteoarthritis
How to Recognize Subchondral Bone Marrow Lesions and Identify Postoperative Calcium Phosphate Injection on Knee Imaging Edited by ScholarGen MediAI Team Executive Answer Knee subchondroplasty is a minimally invasive procedure designed to treat symptomatic subchondral bone marrow lesions associated with knee osteoarthritis and selected early insufficiency fractures. MRI is essential for identifying the target lesion, particularly subchondral bone marrow edema-like signal on fluid-sensitive sequences. In this case, right knee imaging demonstrates medial compartment osteoarthritis, a medial tibial plateau bone marrow lesion, a radial tear near the posterior root of the medial meniscus, and a Baker cyst. Following subchondroplasty, injected calcium phosphate appears as dense subchondral sclerosis on radiographs. Recognizing this expected postoperative appearance is critical to avoiding confusion with metastatic disease or other sclerotic bone lesions. 1. Why Knee Subchondroplasty Mat...