Mechanical Analysis of Twelve Toggle Suture Constructs for Stabilization of Coxofemoral Luxations

Abstract

A combination of the Piermattei toggle and #5 OrthoFiber or #5 Ethibond achieved a higher load at failure than all other groups, and resisted the greatest number of cycles to failure. Long-term mechanical testing of these TSCs are warranted to further define their durability.

Mechanical comparison of monofilament nylon leader and orthopaedic wire for median sternotomy closure

“…MNL is also less likely to harbour bacteria and become infected than multifilament materials (Lewis et al ). In contrast, three biomechanical studies reported that polyethylene blended suture materials were stiffer, stronger and elongated less than MNL (Burgess et al , Jha & Kowaleski , Rose et al ). Crimp clamps were used in this study as initial tension and stiffness have been reported to be greater for crimped loops when compared to knotted loops of 80 lb MNL in three in vitro studies (Banwell et al , Peycke et al , Vianna & Roe ).…”

Mechanical analysis of suture attachment methods in toggle suture constructs

“…This study was designed to characterize further the mechanical performance of a synthetic implant commonly used for open surgical stabilization of coxofemoral luxation in dogs. Our mechanical testing set‐up, based on a prior bench top mechanical analysis of toggle suture constructs, introduced the variable of suture attachment method to the toggle. The 1/8‐in toggle rod is the most commonly used implant size reported in the veterinary literature for hip luxation repair .…”

“…Our mechanical testing set‐up, based on a prior bench top mechanical analysis of toggle suture constructs, introduced the variable of suture attachment method to the toggle. The 1/8‐in toggle rod is the most commonly used implant size reported in the veterinary literature for hip luxation repair . The mean weight reported in the literature for dogs with traumatic coxofemoral luxation and subsequent repair ranges from 15 kg to 29 kg, and the 1/8‐in toggle rod is the manufacturer‐recommended implant for dogs of this size .…”

“…A benchtop mechanical technique for single cycle load to failure suture testing was designed to allow comparisons among prior study results with similar models while introducing additional construct variables . ASTM methodology for material testing was not applied.…”

“…Among cases that fail, the most common reported complication after reduction and stabilization with a toggle rod is breakage of the suture and reluxation of the coxofemoral joint . Analysis shows that construct failure typically occurs in 1 of 3 ways: toggle deformation, suture breakage away from the toggle and most commonly, suture breakage at the toggle–suture interface …”