VCA (ASTRAGALIC CONICAL SCREW)

Product catalog summary

Introduction
The document provides detailed information about the VCA Astragalic Conical Screw, manufactured by MIKAI S.p.A., including specifications, sterilization procedures, and surgical indications.

Product Specifications
The VCA screws are available in two diameters: 6.5mm and 8mm. They come in both regular and cannulated shapes and are made from stainless steel and titanium. The screws are designed for mechanical and proprioceptive correction and are inserted into the talus, resting on the sinus tarsi.

Sterilization Guidelines
The screws are supplied sterile. For instruments, autoclave sterilization at 135°C, 2 atm pressure for 45 minutes is recommended. EtO or other cold sterilization methods are not advised.

Indications for Use
The VCA screw is indicated for cases of pronation, particularly in idiopathic flat foot in children where developmental abnormalities worsen over time. Surgery is recommended when functional disorders become significant.

Advantages
The VCA screw offers easy insertion without obstruction from the peroneal malleolus, biomechanical advantages for raising and lateralization, and maintains intact endo sinus tarsi structures. It is also easy to remove with a dedicated screwdriver.

Surgical Technique
The procedure involves assessing dorsiflexion post-arthroereisis and potentially stretching the Achilles tendon if necessary. The screw is selected based on foot size and inserted with radiographic guidance. A preliminary perforation of the talus is performed to prepare for screw insertion.

Conclusion
The VCA Astragalic Conical Screw provides a reliable surgical option for correcting flat foot deformities with minimal post-operative effort required from patients.

Catalog excerpts

Vca - Stainless steel CODE Sterile Astragalic Screw Ø 8x30mm Sterile Astragalic Screw Ø 8x35mm Sterile Astragalic Screw Ø 8x40mm Sterile Astragalic Screw Ø 8x45mm Sterile Astragalic Screw Ø 6,5x25mm Sterile Astragalic Screw Ø 6,5x30mm Sterile Astragalic Screw Ø 6,5x35mm Vca - Bored stainless steel Astragalic Conical Screw Sterile Astragalic Bored Screw Ø 8x30mm Sterile Astragalic Bored Screw Ø 8x35mm Sterile Astragalic Bored Screw Ø 8x40mm Sterile Astragalic Bored Screw Ø 8x45mm Sterile Astragalic Bored Screw Ø 6,5x25mm Sterile Astragalic Bored Screw Ø 6,5x30mm Sterile Astragalic Bored Screw Ø 6,5x35mm Sterile Astragalic Titanium Screw Ø 8x30mm Sterile Astragalic Titanium Screw Ø 8x35mm Sterile Astragalic Titanium Screw Ø 8x40mm Sterile Astragalic Titanium Screw Ø 8x45mm Sterile Astragalic Titanium Screw Ø 6,5x25mm Sterile Astragalic Titanium Screw Ø 6,5x30mm Sterile Astragalic Titanium Screw Ø 6,5x35mm DESCRIPTION Screwdriver for astragalic screw Heavy punch for astragalic screw The VCA screws are supplied sterile, as indicated on the label. For the instruments, autoclave sterilization (saturated steam) with the following guidelines is recommended: Temperature: 135° Mikai does not recommend using EtO or other cold sterilization methods. We thank Dr. Mauro Di Stadio for his cooperation Headquarters: Via P. Gobetti 56r – 16145 Genova Tel. +39 010 30801 – Fax. +39 010 3080211 www.mikai.it – [email protected] Manufacturing Facility: Via Canestrello 2 – 36050 Monteviale (VI) Tel. +39 0444 950100 – Fax. +39 0444 950133 www.mikai.it – [email protected] VCA 0476 2012© Copyrights MIKAI S.p.A. P.IVA 00972790109 - All rights reserved 2012 © Copyrights MIKAI S.p.A. - All rights reserved

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Astragalic Conical Screw Surgical technique Advantages Easy introduction As the VCA screw is inserted into the talus there is no peroneal malleolus obstruction present when it is inserted into the heel. Raising and lateralization The screw tapering has a biomechanical advantage that in addition to lowering the talus also lateralizes. Intact endo sinus tarsi structures The VCA performs an exo sinus tarsi arthrosis and therefore, all the structures within the sinus tarsi are left intact which would instead be involved in an endo sinus tarsi arthrosis. Easy to remouve Even in presence of alisteresi...

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