Most classification systems are based on lesion descriptions by Berndt and Harty ( 2 ): Historically, a variety of terms have been used to refer to this clinical entity including osteochondritis dissecans, osteochondral fracture, and osteochondral defect. Osteochondral injury staging system for MRI attempts to grade the stability and severity of osteochondral injury and is used to plan management. Choi et al. Osteochondral lesion of the talus (OLT) is a broad term used to describe an injury or abnormality of the talar articular cartilage and adjacent bone. Osteochondral lesions of the talus are injuries to the cartilage in the bone inside the ankle joint. Osteochondral defects (OCDs) are very localised areas of joint damage which can occur in a number of different joints , not just the ankle. There are three types of common lesion formation. The first is injury to the cartilage surface with an actual loss of part of the chondral surface and underlying subchondral bone. An osteochondral lesion is an injury or small fracture of the cartilage surface of the talus. After the initial pain and discomfort of a strain or sprain subsides, individuals usually resume or even increase their activity level. The talus is the 3rd most common site (after the knee and elbow) of osteochondral lesions. [] Although majority may be associated with trauma, some may develop insidiously. INTRODUCTION. This term covers a wide spectrum of pathologies including (sub)chondral contusion, osteochondritis dissecans, osteochondral fracture and osteoarthritis resulting from longstanding disease. Osteochondral autograft transfer involves harvesting single or multiple cylindrical cartilage and subchondral bone grafts from the non-weight-bearing part of the ipsilateral knee and transplanting them into the talar defect after preparation. Osteochondral lesions of the talus (OLT) are those that affect the chondral and subchondral areas of the talus. How is it caused? Symptoms. In the ankle, osteochondral lesions usually occur on the talus, which is the bone that connects the leg to the foot. Osteochondral injury of the ankle (talus) Osteochondral injury (or osteochondral defect) of the ankle is an injury to the bone or smooth cartilage covering the joint surface in the ankle. This is often referred to as a chip inside your ankle joint. Electronic databases from January 1966 to December 2006 were systematically screened. The “classical” defect involves a disruption of both the bone (osteo) and cartilage (chondral) .They usually occur on the Talus if effecting the ankle joint and are a region where the cartilage and underlying bone have been disrupted. The most common surgical treatment is arthroscopy of the ankle. This commonly occurs after an ankle sprain where the two bones hit against each other, causing a piece of cartilage and bone to chip off inside the ankle. 1 ) and anterolateral (46%) talar dome ( 1 ). The most common sites are the posteromedial (53%) ( Fig. The location and containment of the osteochondral lesion of the talus also may be implicated in the prognosis following the use of bone-marrow-stimulation techniques. The proportion of the patient population treated succes … This type of injury can be due to a severe ankle sprain that causes bone and cartilage to become loose, resulting in ongoing ankle pain. Osteochondral lesions (OCL) of the talus are defined as any damage involving both articular cartilage and subchondral bone of the talar dome. Multiple tiny incisions are made around the ankle and … The treatment for an osteochondral defect of the talus is extremely varied and depends on the size of the defect and the extent of bone and cartilage loss. The aim of this study was to summarize all eligible studies to compare the effectiveness of treatment strategies for osteochondral defects (OCD) of the talus. 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