Fracture Fixation and Implants

Authors: Elysia A Masters et al.

Osteomyelitis is a devastating complication of orthopaedic surgery and commonly caused by Staphylococcus aureus (S. aureus) and Group B Streptococcus (GBS, S. agalactiae). Clinically, S. aureus osteomyelitis is associated with local inflammation, abscesses, aggressive osteolysis, and septic implant loosening. In contrast, S. agalactiae orthopaedic infections generally involve soft tissue, with acute life-threatening vascular spread.

Authors: Noelle M Muro, Robert S Gilley, Andrew R Kemper, Marian E Benitez, Sabrina L Barry, Craig McNally

Objective: To compare the stiffness of constructs fixed with a type II external skeletal fixator (ESF) or a 3.5-mm locking compression plate (LCP) in axial compression and bending with a fracture gap model.

Study design: Quasi-static four-point bending and axial compression tests.

Sample population: Ten LCP and 10 ESF immobilizing epoxy cylinders with a 40-mm fracture gap.

Authors: Danielle M Marturello, Dirsko J F von Pfeil, Loïc M Déjardin

Objective: The aim of this study was to (1) evaluate bending structural properties of a machined short fibre epoxy (SFE) feline bone surrogate (FBS), (2) compare the bending behaviour of small angle-stable interlocking nails (I-Loc; Targon) and locking compression plates (LCP) and (3) evaluate the effect of implant removal on FBS bending strength.

Authors: Guy Bird, Mark Glyde, Giselle Hosgood, Alex Hayes, Robert Day

Objective: This investigation compared the biomechanical properties of a 2.0 mm locking compression notched head T-plate (NHTP) and 2.0 mm straight locking compression plate (LCP), in a simple transverse juxta-articular fracture model.

Authors: Dirsko J F von Pfeil, Sara Megliolia, Sarah Malek, Mark Rochat, Mathieu Glassman

Objective: The aim of this study was to report the clinical experience with fluoroscopically guided tibial apophyseal percutaneous pinning (TAPP) for tibial tuberosity avulsion fractures (TTAF).

Study design: This is a retrospective case series.

Authors: Tim G Easter, Jonathan J Pink, Bill Oxley, Alexis Bilmont

Objective: The aim of this study was to report the surgical technique and outcomes of dogs with type V central tarsal bone (CTB) fractures stabilized with a bone plate applied to the medial aspect of the tarsus and metatarsus.

Authors: Sarah Castaldo, Jason Syrcle, Steve Elder, Robert W Wills

Objective: Successful stabilization of comminuted supracondylar humeral fractures is challenging, and biomechanical studies are scarce. This study compares double-plate (DB-PLATE) and linear external fixator with an intramedullary pin tie-in (ESF-IMP) fixation techniques in a cadaveric gap model. The hypothesis was the DB-PLATE construct would be stiffer, stronger and more resistant to repeated loading than the ESF-IMP construct in both cyclic and load-to-failure axial compression testing.

Authors: Hey-Jin Jung, Aram Jang, Hyeong-Jun Yim, Chang-Hoon Han, Jae-Hoon Lee

Objective: The aim of this study was to determine the effect of insertion torque and angulation on the push-out strength of screws in Atraumatic Rigid Fixation (ARIX) system.

Authors: M B Walton, E Crystal, S Morrison, J Onyett, J McClement, R Allan, M Straw, J F Innes

Objectives: To report complications, clinical outcomes and CT-imaging outcomes of a surgical system designed for the management of humeral intracondylar fissures and humeral condylar fractures.

Materials and methods: Retrospective review of fracture healing from medical records, direct owner contact and an online data-submission service. Follow-up included CT scans and a calculated "bone-opacity continuity index" to quantify bone healing.

Authors: Elena Carbonell Buj, Neil Burton, John R Mosley, Richard L Meeson, Alison Major, Richard G Whitelock, Kevin Parsons , Sorrel J Langley-Hobbs

Objective: The aim of this retrospective multicentre case series was to describe signalment, presenting signs and imaging findings in dogs with isolated articular fractures of the talus.

Study design: Medical records (2008-2019) of dogs with isolated articular talar fractures were reviewed.