Posterior Facet of Subtalar Joint
- larger than the anterior and middle facets and is convex in shape;
- tarsal canal separates the posterior facet from the anterior and middle facets;
- medial oblique axial view:
- demonstrates middle & post facets of sub-talar joint;
- lateral oblique axial view
- demonstrates the posterior subtalar facet;
- harris view:
- for visualizing subtalar joint is enhanced by measuring angle of posterior facet on lateral view & then adjusting harris view to this inclination;
- angulation of middle facet by > 20 degrees off horizontal is consistent with a coalition, even if the joint appears open
Posterior subtalar joint arthrography. A useful tool in the diagnosis of hindfoot disorders.
Original Text by Clifford R. Wheeless, III, MD.
Last updated by Data Trace Staff on Wednesday, September 5, 2012 1:51 pm