Articular Cartilage Repair Using Marrow Stimulation Augmented with a Viable Chondral Allograft: 9-Month Postoperative Histological Evaluation

Figure 3

Nine-month postoperative radiograph. Unenhanced MRI of the left knee performed on a 1.5 Tesla magnet. Examination of the area of the femoral patellar joint where the patient is status-post a chondroplasty of the trochlear groove shows low T1 and high T2 signals in the subchondral bone. The articular surface of the chondroplasty defect shows a signal, which is isointense with articular cartilage. The thickness of the signal is less than that of the adjacent cartilage.