الفهرس 
ANATOMY OF ANKLE (TALOCRURAL) JOINTOnly 14 pages are availabe for public view
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Abstract
Ankle pain is a common and frequently disabling clinical complaint that may be caused by a broad spectrum of osseous or soft-tissue disorders. Impingement syndromes are considered one of the most important causes of ankle pain which occurs due to friction of the joint tissues.
Ankle impingement is a painful condition caused by the friction of the joint tissues. It is classified as bone impingement, soft tissue impingement and entrapment neuropathy depending on which joint portion impinges on the others. Ankle impingement is also classified into anterolateral, anterior, anteromedial, posterior impingement and entrapment neuropathies of the ankle
Magnetic resonance imaging of the ankle disorders provide high soft-tissue contrast resolution and multiplanar capabilities in addition to quick non invasive tool for the diagnosis of related injuries . It demonstrates soft tissue structures including muscles, tendons, ligaments, cartilages, nerves, blood vessels as well as bony structures particularly the bone marrow.
Also, it permits direct visualization of spaces and compartments of the ankle, assessment of their contents including the neurovascular bundles and detection of their related abnormalities.
It allows detection of tenosynovitis, tendonitis, preitendinosis, complete and partial tendon tears, sublaxation and dislocation, joint effusions, intraarticular bodies, ganglion cysts and ligamentous tear and edematous bone marrow are excellently detected by MRI.
It also detects radiographically undetected subtle bone changes and as well the changes related to the unconfidently detected bone irregularity or spurs and bone edema.
Conventional MR imaging is probably most useful in posterior and posteromedial impingement, where it can identify the relative contributions of the osseous and soft tissue components.
MR arthrogram seem to be the most accurate means of assessing the capsular abnormalities present in anterolateral and anteromedial impingement and for confirmation of possible concomitant injury.
Compared to conventional radiographs, nuclear medicine studies, computed tomography and ultrasound, MRI provides the best combined sensitivity and specificity for clinical differential diagnostic consideration.
Ultrasonography and MRI are complementary tools of investigation. Both US and MRI are uniquely able to demonstrate the soft tissue components of joint disease. US with its wide availability, lower cost and speedy examination has the advantage of being able to screen multiple joints rapidly with good identification of ligament precisely as well as.
MRI is confidently done to confirm the diagnosis and extent of the lesion especially when surgical interference is planned. Hence, MRI is an efficient imaging modality in evaluating patients with chronic ankle pain.