The Spherical Washer is indicated for screw arthrodesis of the ankle joint especially in cases of osteoporotic bones. It enables compression in combination with Cannulated Screws 6.5, 7.0 and 7.3 mm being achieved. The Spherical Washer allows insertion of the screw in an angel of 070. The head of the screw countersinks level with the bony surface and, through its design, distributes the load widely across the thin cortical surface. Therefore, it is especially useful in osteoporotic bone. The Spherical Washer is available in a small and a large size, each in Stainless Steel or TiCp.
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