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Fig. 1A —STAR arthroplasty device (Scandinavian Total Ankle
Replacement, Waldemar Link) is cementless, three-component (mobile-bearing)
design developed by H. Kofoed in 1981. Mobile, ultrahigh-molecular-weight
polyethylene (UHMWPE) meniscus (thick black arrow) articulates
superiorly with trapezoidal, flat, cobalt–chromium tibial plate
(white arrow) and inferiorly with longitudinally ridged, convex,
cobalt–chromium talar component (thin black arrow). Talar
component possesses fin (asterisk, B) that inserts caudally
into talus. Two characteristic cylindric bars (arrowheads) positioned
on superior aspect of tibial component serve to anchor implant in subchondral
tibia. Photograph of STAR arthroplasty device, oblique lateral view.
