82, No. Osteochondritis Dissecans. 3 A systematic method … Etiology relates to a subchondral fatigue fracture usually as a result of shearing, rotatory or tangentially aligned impaction forces. See More See Less. Osteochondritis dissecans (OCD) of the capitellum is a localized disorder of the subchondral bone, in a region with limited healing capacity. Osteochondral lesions (osteochondritis dissecans) of the talus are common articular lesions that are usually traumatic in origin. 27.2 Osteochondritis dissecans discovered after throwing-related pain is reported. Mesgarzadeh M, Sapega AA, Bonakdarpour A, et al. 2008 Aug. 248(2):571-8. . Osteochondral defects (OCD) or lesions (OCL) are focal areas of damage with articular cartilage damage and injury of the adjacent subchondral bone plate and subchondral cancellous bone. The radiographic grading did not correspond to either the MRI or CT grading. and subchondral bone in patients with juvenile osteochondritis dissecans (JOCD). Upper: the elbow at AP 45° of flexion (tangential view). European Journal of Radiology Volume 82, Issue 3 , March 2013, Pages 518-525 MR grading system of osteochondritis dissecans lesions: Comparison with arthroscopy Fig. Lower: the elbow in oblique view at 45°. keywords = "Grading scales, Knee, Magnetic resonance imaging, Osteochondritis dissecans", author = "Ellermann, {Jutta M.} and Bryan Donald and Sara Rohr and Takashi Takahashi and Marc Tompkins and Bradley Nelson and Amanda Crawford and Christopher Rud and Jeffrey Macalena", Osteochondritis dissecans: History, pathophysiology and current treatment concepts. Osteochondritis dissecans is generally diagnosed by conventional radiology. As a result, it is possible for portions of cartilage to become lodged within the joint, leading to limitation in motion. Osteochondritis dissecans (OCD) of the elbow is localised most commonly at the capitellum. A comparison of MRI and arthroscopic finding. Osteochondritis dissecans (OCD) of the elbow is a condition of the subchondral bone and overlying cartilage, mostly affecting a part of the humeral capitellum. Osteochondritis dissecans is a joint condition whereby a variable amount of bone and its adjacent cartilage loses its blood supply. There is a small amount of signal within the underlying bone without any cyst formation or bone loss The patient had… 27.1 Osteochondritis dissecans during the initial asymptomatic phase. Osteochondritis dissecans (OCD) refers to the acquired fragmentation and possible separation of the articular cartilage and a segment of subchondral bone from the remaining articular surface. Sonographic assessment of osteochondritis dissecans of the humeral capitellum. J Bone Joint Surg Am 1996;78:439-56. Osteochondritis dissecans (OCD) is characterized by separation of an osteochondral fragment from the articular surface.An osteochondral fragment may be present in situ, incompletely detached, or completely detached. A modified grading system has been proposed by Hepple in 1999 [ 5 ] and by Dipaola et al. OCD is a condition that affects the subchondral bone and potentially the overlying articular cartilage. A completely detached fragment is a loose body. The case on the left is unstable for two reasons: - small cysts at the base of the lesion (red arrow) - even more … With the advent of MRI, this grading system was further revised including evaluation of structures invisible on conventional radiology, such as the integrity of the cartilage and presence of BME. The capitellum of the immature elbow has a tenuous vascular supply consisting of one or two posterior vessels. Sagittal proton density-weighted image (a), coronal T2-weighted image with fat saturation (b), and arthroscopic images (c) and (d) are shown. Radiology. Osteochondritis dissecans affects joints, most frequently the knee, in children and adolescents. Its therapy is determined by the stage of the lesion and MRI will become the method of choice for staging. Osteochondritis dissecans: analysis of mechanical stability with radiography, scintigraphy, and MR imaging. - Osteochondritis Dissecans E 10/1/2014 226 . It is a localised condition of the subchondral bone which may result in segmentation and separation. Lower: oblique view. Methods: MRI analysis of 122 knees and 132 JOCD lesions in 109 patients who underwent arthroscopic treatment for osteo-chondritis dissecans lesions of the knee between March 2003 and January 2011. Radiology; 1998;5: Reprint. Clinical management of these lesions is based on whether or not the fragments are attached. 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