Magnetic resonance imaging (MRI). The study was completed with magnetic resonance imaging (Figure 3, Figure 4), which showed an osteochondral signal in the posterosuperior medial area of the calcaneus on the talocalcaneal surface. However, considering that the calcaneus is not a known predilection site for tarsal OCD, a more detailed lesion evaluation with cross-sectional imaging was indicated. Osteochondritis dissecans (OCD) is a condition that develops in joints, most often in children and adolescents. It is hypothesized that the … The actual defect may or may … Unstable osteochondritis dissecans lesions are surrounded by a rim of high signal intensity or a fluid-filled cyst on T2 … 20. Osteochondritis dissecans of the tibial plafond is a rare condition that may not be detectable on … This bone and cartilage can then break loose, causing … Kohyama S, Ogawa T, Mamizuka N, Hara Y, Yamazaki M. A magnetic resonance imaging-based staging system for osteochondritis dissecans of the elbow: a validation study against the International Cartilage Repair Society classification. Orthop J Sports Med 2018; 6:2325967118794620 [Google Scholar] Given the age and lack of previous clinical complaints or trauma, a presumptive diagnosis of osteochondritis dissecans (OCD) was made. MRI-guided percutaneous retrograde drilling of osteochondritis dissecans of the talus: a feasibility study 17 April 2014 | European Radiology, Vol. Osteochondritis dissecans (OCD) is a term for a distinct clinical-pathologic entity: a pathologic condition that affects subchondral bone formation and may result in an unstable subchondral fragment, disruption of adjacent articular cartilage, and possible separation of the fragment. It occurs when a small segment of bone begins to separate from its surrounding region due to a lack of blood supply. CONCLUSION. We report the imaging characteristics of osteochondritis dissecans of the tibial articular surface (tibial plafond). Osteochondritis dissecans of the talar articular surface of the ankle joint has been well described. Usually a small area of bone adjacent to the articulating surface is affected. The persistence of pain and lack of improvement with conservative treatment made arthroscopic debridement of … When it becomes necrotic, the overlying cartilage is devitalized, and frequently the entire fragment separates out and forms an intra-articular loose body. Using radio waves and a strong magnetic field, an MRI can provide detailed images of both hard and soft tissues, including the bone and cartilage. Osteochondritis dissecans is an aseptic necrosis of subchondral bone and the overlying cartilage. Osteochondritis dissecans (os-tee-o-kon-DRY-tis DIS-uh-kanz) is a joint condition in which bone underneath the cartilage of a joint dies due to lack of blood flow. As a result, the small piece of bone and the cartilage covering it begin to crack and loosen. The MRI findings of unstable and stable osteochondritis dissecans of the capitellum are similar to the findings described for osteochondritis dissecans of the femoral condyles and talar dome. Treatment of osteochondritis dissecans is intended to restore the normal functioning of the affected joint and relieve pain, as well as reduce the risk … 7 Simultaneous surgery for chronic lateral ankle instability accompanied by only subchondral bone lesion of talus Osteochondritis dissecans is defined by the Research in Osteochondritis Dessicans of the Knee Group as “a focal, idiopathic alteration of subchondral bone with risk for instability and disruption of adjacent articular cartilage that may result in premature … OSTEOCHONDRITIS (focal aseptic necrosis) of various ossific centers has been described. 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