Talar Dome. We studied the value of MR imaging in determining the stability of the osteochondral fragments. OCDs of the talus represent damage to the articular surface of the talar dome in the ankle joint. Osteochondral fractures of the dome of the talus. Diagnosis. These sequences were performed, and their ability to distinguish the osteochondral lesions from normal bone, cartilage, and surrounding soft tissue was assessed. Osteochondral lesions may also involve the talar dome, most frequently the medial aspect. 20, No. The most common sites are the posteromedial (53%) ( Fig. Clin Orthop Relat Res. MRI images show a stage IV medial talar dome osteochondral lesion with a minimally displaced osseous fragment corresponding to the plain films. “Osteo” means bone and “chondral” refers to cartilage. Talar dome chondral and osteochondral lesions are a common cause of ankle pain and subjective instability. “Osteo” means bone and “chondral” refers to cartilage. Foot Ankle Int 1999; 20( 8): 474– 480. Talar dome lesions are usually caused by … Osteochondral lesions (OCL) of the talus involve both articular cartilage and subchondral bone of the talar dome. 1 ) and anterolateral (46%) talar dome ( 1 ). This condition is also known as osteochondritis dissecans (OCD) of the talus or a talar osteochondral lesion (OCL). “Osteo” means bone and “chondral” refers to cartilage. Retrograde drilling of osteochondral lesions of the medial talar dome. A talar dome lesion can be difficult to diagnose because the precise site of the pain can be hard to pinpoint. Subtle transchondral fractures of the talar dome: a radiological perspective. Talar dome lesions are usually caused by an injury, such as an ankle sprain. Crossref, Medline, Google Scholar; 7 Kumai T, Takakura Y, Higashiyama I, Tamai S. Arthroscopic drilling for the treatment of osteochondral lesions of the talus. 1977 Sep; 124 (3):667–673. Osteochondral lesion of the talus in children: Are there MRI ... Keywords Ankle .Children .MRI .OCD .OLT .Osteochondritisdissecans .Osteochondrallesion .Talar dome Introduction Osteochondritis dissecans (OCD) ... 2 Department of Radiology, Children ’s Hospital … focal injuries to the talar dome with variable involvement of the subchondral bone and cartilage resulting in osteochondral lesion of the talus (OLT) may be caused by traumatic event or result of repetitive microtrauma; Epidemiology . It is also called an osteochondral defect (OCD) or osteochondral lesion of the talus (OLT). It is also called an osteochondral defect (OCD) or osteochondral lesion of the talus (OLT). 3 Autogenous bone grafting for the treatment of talar dome lesions Purpose: The purpose of our study was to investigate the performance of MRI findings to predict instability of osteochondral lesion of the talus (OLT) in children and the association between skeletal maturity and lesion stability. An osteochondral lesion to the talar dome is an injury that causes damage to the cartilage that sits on top of the talus. … 1, pp. There is an osteochondral fracture of the posterolateral part of the talar dome; the fractured fragment is detached and flipped upside down, so that the articular cartilage is visible at its inferior surface. The lesion’s location does not technically limit the ability to perform the conventional surgical treatments discussed in this chapter as it does other restorative procedures, such as osteochondral autograft or allograft transplantation (i.e., osteoarticular transfer system [OATS]) or autologous chondrocyte implantation (ACI), which require greater access to the talar dome. Introduction Injuries to the articular surface of the talar dome in the ankle joint are commonly called osteochondral lesions of the talus (OLT). Yvars MF. Prognosis of these lesions depends on stability, location, and size of the lesion.Imaging has an essential role in the diagnosis, staging, and management of osteochondral lesions. Ankle Traction During MRI of Talar Dome Osteochondral Lesions. Few studies have evaluated the incidence of talar dome lesions and injuries to the peroneal tendons occurring concomitantly. Other terms that refer to the same general process are osteochondral defects (OCD), osteochondritis dissecans Medline, Google Scholar The purpose of our research was to evaluate the incidence of osteochondral lesions of the talus (OLT) with peroneal tendon pathologic features according to the magnetic resonance imaging (MRI) findings. Management of symptomatic osteochondral lesions of the talus (OLT) is challenging given the poor healing potential of articular cartilage. There is also reactive bone marrow edema of the distal tibia and the talus. Lesions in the medial third of the talar dome were significantly larger in surface area involvement and deeper than those at the lateral talar dome. Patients tend to present… Radiology. 17 Osteochondral Lesions of the Talus MARK E. EASLEY, STEVEN D. SIDES, AND ALISON P. TOTH Treatment of symptomatic focal talar osteochondral defects has undergone a dramatic evolution over the past decade. A talar dome lesion is an injury to the cartilage and underlying bone of the talus within the ankle joint. Clinical management of these lesions is based on whether or not the fragments are attached. Many of these lesions are first diagnosed by plain film. Osteochondral lesions are relatively common in children and adolescents, and the incidence is increasing. [1] 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. Treatment of Osteochondral Lesions of the Medial Talar Dome with Osteochondral Autograft Transplantation Operative Techniques in Orthopaedics, Vol. Furthermore, the ankle joints of five volunteers without osteochondral lesions of the medial talar dome and one volunteer with an osteochondral lesion of the medial talar dome were imaged. The talus is a bone in the foot that helps form the ankle joint. Osteochondral lesions (osteochondritis dissecans) of the talus are common articular lesions that are usually traumatic in origin. (A) Unstable medial talar dome osteochondral lesion of the talus. Retrograde drilling of osteochondral lesions of the medial talar dome. If the cartilage doesn’t heal properly following the injury, it softens and begins to break off. Author information: (1)1 Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Rm 2A061, 2/F, New Extension Block, Prince of Wales Hospital, 30-32 Ngan Shing St, Shatin, New Territories, Hong Kong, SAR. Talar dome lesions are usually caused by … Treatment of Osteochondral Lesions of the Talar Dome James W. Stone MD Key Points Although osteochondral lesions can occur over any portion of the talar dome or the tibia, the talar lesions typically occur over the anterolateral or the posteromedial talar dome. Two patients (a 16-year-old boy) had two recent osteochondral fractures, a… It is often associated with a traumatic injury such as a severe ankle sprain. Particulated juvenile cartilage allograft transplantation. It is relatively prevalent and are an important cause of ankle morbidity. (C) Particulated juvenile cartilage allograft pieces were placed into the lesion bed. Art. 1976 Jan-Feb;(114):185–191. 2 of 7 Posadzy et al: Staging of Osteochondral Lesions of the Talus Figure 1: Location of the OCL according to the mechanism of trauma. Two patients (a 16-year-old boy) had two recent osteochondral fractures, anterior and superior lateral, with a free fragment detached in the joint. Osteochondral lesions are injuries to the talus (the bottom bone of the ankle joint) that involve both the bone and the overlying cartilage. Medial lesions tend to be deeper and cup shaped. Nine osteochondral lesions of the talar dome were treated arthroscopically. Smith GR, Winquist RA, Allan NK, Northrop CH. of talar osteochondral lesions. A partial fluid cleft at its posterior margin and a mild subchondral oedema suggests an unstable lesion. RSNA, 2009 Supplemental material: ... Radiology: Volume 252: ... dral lesion of the medial talar dome were imaged. Crossref, Medline, Google Scholar; 12. The talus is the 3rd most common site (after the knee and elbow) of osteochondral lesions. An osteochondral injury to the talar dome produces pain at the ankle and you will … The lesions were treated with simple ablation of the loose body. Most OCD of the talar dome (8a) treated non-operatively improve or show no change on MRI at an average of 13.7 months, and marrow edema and subchondral cysts are not reliable indicators of progression. They may also be called osteochondritis dessicans or osteochondral fractures. J Bone Joint Surg Am 1999; 81:1229-1235. METHODS: Thirty-three patients (mean age, 35.1 years; body mass index, 26.8) with osteochondral lesions of the medial talar dome were retrospectively evaluated after open AMIC repair at a mean follow-up of 4.7 years (range, 2.3-8.0 years). A talar dome lesion is an injury to the cartilage and underlying bone of the talus within the ankle joint. To diagnose this injury, the surgeon will question the patient about recent or previous injury and will examine the foot and ankle, moving the ankle joint to help determine if there is pain, clicking or limited motion within that joint. A medial talar dome injury is seen on a mortise x-ray view. Bale RJ, Hoser C, Rosenberger R, Rieger M, Benedetto KP, Fink C. Osteochondral lesions of the talus: computer-assisted retrograde drilling—feasibility and accuracy in initial experiences. A similar pattern was subsequently described at the talar dome in 1922 by Kappis and colleagues.3, 4 The etiology of these lesions remains controversial today with numerous proposed biomechanical explanations and causes in the orthopaedic, pediatric, radiology… Foot Ankle Int 1999; 20:474-480. Materials and method: This retrospective IRB-approved and HIPPA-compliant study included children with OLT, who underwent an ankle MRI examination between March … It is also called an osteochondral defect (OCD) or osteochondral lesion of the talus (OLT). (B) Lesion debrided to stable margins. incidence 69% of ankle fractures; 70% of ankle sprains; 10% are bilateral Lee RKL(1), Griffith JF(1), Law EKC(1), Ng AWH(1), Yeung DKW(1). Nine osteochondral lesions of the talar dome were treated arthroscopically. These sequences were performed, and their ability to distinguish the osteo-chondral lesions from normal bone, carti- However, it can also occur from chronic overload due to malalignment or instability of the ankle joint. That are usually caused by … nine osteochondral lesions ( osteochondritis dissecans ) of osteochondral lesions are first diagnosed plain. Are common articular lesions that are usually caused by … nine osteochondral lesions of the distal tibia the! 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