And Cosens said that numbers from Minnesota, which reports all surgical errors, indicate there is a retained object in 1 in 8,000 surgeries.
From the stltoday.com
The observations also show that the object retained its X-shape even as the debris field slowly expanded.
From the sciencedaily.com
The pins, which at first served to keep the pallium in place, were retained as ornaments even after the pallium was sewn in the proper shape, although they no longer had any practical object.