Biomechanical Analysis of Screw-Augmented Intramedullary Fixation for Tibiotalocalcaneal Arthrodesis

Abstract

Use of an augmentation screw as described in this study may lead to lower complication rates, particularly in patients with osteopenic bone.

Ankle and Subtalar Joint Arthrodesis with Retrograde Intramedullary Nail

“…Bu hastalarda stabiliteyi arttırmak için transvers yönelim yerine arkadan öne yönelimli distal kilitleme vidaları ya da kalkaneus-talus yönelimli ek transfiksasyon vidası kullanılması daha uygundur. [16,17] Biz de hastalarımızın üç tanesinde stabiliteyi artırmak amaçlı çivinin üzerinden kalkaneustan talusa yönelim-li kilitleme vidası kullandık.…”

Tibiotalocalcaneal Arthrodesis: A Biomechanical Comparision of Multiplanar External Fixation with Intramedullary Fixation

“…3,9,10,13,14 The loads were designed to challenge, but not damage, the anatomic specimens, and this allowed sequential bending tests in different planes and torsional testing in both internal and external rotation directions on the same specimens.…”

Comparison of Calcaneal Fixation of a Retrograde Intramedullary Nail with a Fixed-Angle Spiral Blade Versus a Fixed-Angle Screw

“…This radiographic parameter allowed assessment especially of device fixation in the hindfoot, as well as a study of the failure pattern. Dorsiflexion was chosen since, according to O'Neill et al, 19,20 this represents the predominant loading mode of the arthrodesis site during weightbearing in the postoperative period. The size of the angle was adopted in light of preliminary tests which had shown that displacement by 7 degrees was clear and certain evidence of permanent, rather than of reversible elastic, deformation.…”