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Ankle Arthroscopy: Correct Portals and Noninvasive Distraction.
Arthroscopy 2021 April
Noninvasive ankle distraction technique is the standard of care for ankle arthroscopic surgery. Noninvasive distraction can be performed safely and with fewer complications when compared side-by-side with the nondistraction dorsiflexion technique. Moreover, distraction techniques allow a single surgeon to operate in the most convenient supine position and in a "hands-free" manner, with adequate space to avoid iatrogenic chondral damage. In addition, distraction allows for dedicated inflow and outflow portals to sufficiently irrigate the joint. Although the nondistraction technique allows excellent visualization of the anterior joint, it fails to provide appropriate visualization of the entire joint, using both anterior and posterior portals. Pathology that is best accessed from the posterior portal includes posterior osteochondral lesions, loose bodies, tears of the transverse ligament, acute ankle fractures, posterior tibial osteophytes, and occasionally an os trigonum. Fortunately, noninvasive distraction techniques plantarflex the ankle, also providing optimal access to the talus through the anterior approach. With the added use of posterolateral and occasionally posteromedial portals, near-universal access to lesions about the ankle can be obtained. In this infographic, the authors present the current indications for noninvasive ankle distraction arthroscopy and illustrate the importance of proper portal placement in obtaining the access and visualization necessary to easily and safely address pathology throughout the entire ankle and subtalar joint.
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