{"id":5461,"date":"2020-01-01T09:00:49","date_gmt":"2020-01-01T08:00:49","guid":{"rendered":"https:\/\/www.permedica.it\/acorn\/"},"modified":"2026-04-16T11:01:30","modified_gmt":"2026-04-16T09:01:30","slug":"acorn","status":"publish","type":"post","link":"https:\/\/www.permedica.it\/en\/acorn\/","title":{"rendered":"ACORN"},"content":{"rendered":"

Safety first<\/h2>\n

Double mobility cup
\nStability
\nRange of Motion<\/p>\n

Product range:<\/strong> 14 sizes
\npress-fit and cemented (\u00d8 38-64mm)<\/p>\n<\/div>

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ACORN<\/strong> is a Dual Mobility<\/strong> acetabular cup for primary cases, available both in press-fit (cementless) and cemented version.
\nThe concept of dual mobility involves the use of a metal shell within which articulates a mobile insert, of a diameter perfectly compatible, where the femaral ball head articulates as well.
\nFirst introduced in the \u201870s by Prof. Bousquet, this type of implant has demonstrated in clinical use high joint stability even in the most critical cases.<\/p>\n<\/div>

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\"ACORN<\/a><\/span><\/div><\/div><\/div><\/div>
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High primary stability<\/p>\n

The cup has an hemispherical geometry with polar deflection and circumferential radial grooves to guarantee optimal press-fit in the equatorial region.<\/p>\n<\/div>

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Porous Coating<\/p>\n

The ACORN cementless version presents a HaX-Pore\u00ae<\/sup><\/strong> double plasma-sprayed coating (500\u03bcm Titanium + 40\u03bcm Hydroxyapatite) in order to obtain a good primary fixation and promote osteoblast colonization.<\/p>\n<\/div>

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Dual Mobility inserts<\/p>\n

Dual Mobility inserts, available with 22 and 28mm inner diameter, are designed for a perfect coupling with the inner surface of every cup sizes, providing the highest articular stability.<\/p>\n

They are made of UHWMPE (GUR1020) without calcium stearate, available also with Vitamin E VITAL-E\u00ae<\/sup><\/strong>.<\/p>\n<\/div>

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MATERIALS<\/strong><\/p>\n

ACORN cups are made of PM734 highly nitrogenized stainless steel alloy – ISO5832\/9.
\nThe articular inserts are made of UHMWPE without calcium stearate – ISO5834\/1\/2 also available with Vitamin E
\n(VITAL-E\u00ae<\/sup>)<\/p>\n<\/div>

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<\/i>Hip Products<\/a><\/p>\n<\/div>

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