Vira S(1), Ramme AJ(1), Chapman C(2), Xia D(3), Regatte RR(4), Chang G(5). 2004; 233(3): 768–73. The equipment is designed to perform exams in sitting or supine position and is relatively compact, allowing installation in many radiology departments and private practices. As such, the term encompasses a variety of pathologies, including: osteochondritis dissecans, osteochondral defects, and osteochondral fractures. Sagittal (a) fat suppressed T2-WI show a subchondral band-like area of low signal at the subchondral cortex (white arrow) with surrounding BME (white asterisk). 101, no. We report the outcome of a nonoperative treatment for symptomatic OCL. Jung HG(1), Kim NR(2), Jeon JY(3), Lee DO(4), Eom JS(1), Lee JS(1), Kim SW(1). Later on, this grading system has been modified to computed tomographic evaluation and correlated with arthroscopy, distinguishing cystic lesion of talar dome seen in primary stages with or without communication to the articular surface and detached fragment in more advanced lesions . Electronic databases from January 1966 to December 2006 were systematically screened. Foot Ankle Surg 2012;51:556-60. The most common sites are the posteromedial (53%) ( Fig. William Palmer, Laura Bancroft, Fiona Bonar, Jung-Ah Choi, Anne Cotten, James F. Griffith, Philip Robinson, Christian W.A. Although it is adopted for osteochondral abnormalities of the talus (1), the term lacks specificity and should be only part of a description of a more specific diagnostic entity. This term covers a wide spectrum of pathologies including (sub)chondral contusion, osteochondritis dissecans, osteochondral fracture and osteoarthritis resulting from longstanding disease. Schematic drawing of talocrural joint injury in pronation (a) results in sprain of the medial collateral ligaments (brown) and lateral-sided OCL of the talar dome and/or kissing tibial lesion (orange zones), whereas injury in supination (b) causes sprain of the lateral ligaments and medial-sided OCL of the talar dome and/or kissing lesions at the tibia (orange zones). The articular cartilage layer of the talocrural joint is indicated in blue. (2020) Skeletal Radiology. Most classification systems are based on lesion descriptions by Berndt and Harty ( 2 ): Lomax, A, Miller, RJ, Fogg, QA, Jane Madeley, N and Senthil Kumar, C. Quantitative assessment of the subchondral vascularity of the talar dome: A cadaveric study. Additional CBCT-Arthrography is, however, very useful for more accurate cartilage staging and should be considered in those clinical scenarios where arthroscopic treatment of the lesion is considered. Presentation. A modified grading system has been proposed by Hepple in 1999  and by Dipaola et al. Art. 1. Cartilage damage may have a variable imaging appearance ranging from a small fissure, a distinct defect, flap formation or delamination. C = cuneiform bone, Cal = calcaneus, Cu = cuboid bone, F = fibula, M = metatarsal bones, N = navicular bone, Ph = phalanges, STJ = posterior facet of the subtalar joint, Tb = talar body, TD = talar dome, Th = talar head, Ti = tibia, Tn = talar neck. Osteochondral lesions are relatively common in children and adolescents, and the incidence is increasing. The presence of intraarticular contrast and high spatial resolution improves visualization of the cartilage surfaces compared to routine MRI on 1.5 Tesla. Coronal reformatted CBCT-A (c) barely shows subtle subchondral sclerosis at the superolateral aspect of the talar dome and intact overlying cartilage. Accurate staging of cartilage lesions is of utmost importance, as this will have a major impact on the treatment strategy and ultimate prognosis. The passive navigation concept is potentially applicable to many MR-guided interventions, and it may be an alternative to other navigation methods. An Osteochondral Lesion of the Distal Tibia and Fibula in Patients With an Osteochondral Lesion of the Talus on MRI: Prevalence, Location, and Concomitant Ligament and Tendon Injuries. Check for errors and try again. Despite the combination of these MR parameters, accurate cartilage evaluation remains often illusive. The cartilage at the talar dome is slightly irregularly delineated (white arrow). Direct comparison of conventional radiography and cone-beam CT in small bone and joint trauma. The red arrow indicates the direction of the applied force. They are most commonly associated with ankle trauma and wh… 1, pp. Open mosaicplasty in osteochondral lesions of the talus: a prospective study. Juvenile Particulate Osteochondral Allograft for Treatment of Osteochondral Lesions of the Talus: Detection of Altered Repair Tissue Biochemical Composition Using 7 Tesla MRI and T2 Mapping. We studied the value of MR imaging in determining the stability of the osteochondral fragments. 16 . Sagittal PD fat suppressed MRI image (a) showing BME (star) at the posteromedial part of the talar dome. Osteochondral Defect Monday, September 15, 2008 MRI, Musculoskeletal MRI, Musculoskeletal radiology. Disqus. The purpose of this pictorial review is to illustrate the strength of each imaging method. DOI: http://doi.org/10.5334/jbr-btr.1377, Posadzy, Magdalena, Julie Desimpel, and Filip M. Vanhoenacker. The main reason for that is the fact that we need images with high spatial resolution to detect early changes of articular cartilage of the ankle joint. MR imaging of the ankle at 3 Tesla and 1.5 Tesla: Protocol optimization and application to cartilage, ligament and tendon pathology in cadaver specimens. This term covers a wide spectrum of pathologies including (sub)chondral contusion, osteochondritis dissecans, osteochondral fracture and osteoarthritis resulting from longstanding disease. Osteochondral lesions of the talus Few patients require surgery Sang Gyo SEO 1, Jin Soo KIM , Dong-Kyo SEO 2, You Keun KIM 1, Sang-Hoon LEE 3, and Ho Seong LEE 1 Department of Orthopedic Surgery, Asan Medical Center, College of Medicine, University of Ulsan, Seoul; 2 Department of Orthopedic Surgery, Gorbachova T, Melenevsky Y, Cohen M, Cerniglia BW. DOI: https://doi.org/10.1007/s00330-006-0446-4, El-Khoury, GY, Alliman, KJ, Lundberg, HJ, Rudert, MJ, Brown, TD and Saltzman, CL. DOI: https://doi.org/10.1007/s00256-015-2127-3, Berndt, AL and Harty, M. Transchondral fractures (osteochondritis dissecans) of the talus. 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