Shafic A Sraj1, Jeffrey E Budoff. 1. Department of Orthopaedic Surgery, Baylor College of Medicine, Houston, TX, USA.
Abstract
PURPOSE: To determine which currently commercially available saw blades could be held at 45 degrees to the bone to reproducibly provide 2.0, 2.5, and 3.0 mm of ulna or radius shortening. METHODS: Commercially available saw blades were tested for their ability to achieve the osseous shortening at a 45 degrees angle cut. RESULTS: When held at a 45 degrees angle to the bone, 2 Stryker 0.64-mm-thick blades achieved a mean shortening of 2.0 mm. A single Linvatec 1.2-mm-thick blade achieved a mean osseous shortening of 2.1 mm. Two Dyonics 0.65-mm-thick blades achieved a mean osseous shortening of 2.7 mm. Two Dyonics 0.89-mm-thick saw blades achieved a mean osseous shortening of 3.1 mm. Three Stryker 0.38-mm-thick saw blades mounted with the middle blade "upside down" with regard to the 2 outer blades achieved a mean osseous shortening of 3.2 mm. Two Linvatec 0.8-mm-thick saw blades achieved a mean osseous shortening of 3.1 mm. CONCLUSIONS: The findings of this study can help guide surgeons who desire to reproducibly shorten the ulna or radius by 2.0, 2.7, or 3.2 mm using a single saw cut to ensure a parallel osteotomy gap.
PURPOSE: To determine which currently commercially available saw blades could be held at 45 degrees to the bone to reproducibly provide 2.0, 2.5, and 3.0 mm of ulna or radius shortening. METHODS: Commercially available saw blades were tested for their ability to achieve the osseous shortening at a 45 degrees angle cut. RESULTS: When held at a 45 degrees angle to the bone, 2 Stryker 0.64-mm-thick blades achieved a mean shortening of 2.0 mm. A single Linvatec 1.2-mm-thick blade achieved a mean osseous shortening of 2.1 mm. Two Dyonics 0.65-mm-thick blades achieved a mean osseous shortening of 2.7 mm. Two Dyonics 0.89-mm-thick saw blades achieved a mean osseous shortening of 3.1 mm. Three Stryker 0.38-mm-thick saw blades mounted with the middle blade "upside down" with regard to the 2 outer blades achieved a mean osseous shortening of 3.2 mm. Two Linvatec 0.8-mm-thick saw blades achieved a mean osseous shortening of 3.1 mm. CONCLUSIONS: The findings of this study can help guide surgeons who desire to reproducibly shorten the ulna or radius by 2.0, 2.7, or 3.2 mm using a single saw cut to ensure a parallel osteotomy gap.
Authors: T David Luo; Michael De Gregorio; Andrey Zuskov; Mario Khalil; Zhongyu Li; Fiesky A Nuñez; Fiesky A Nuñez Journal: J Wrist Surg Date: 2019-08-28