Fracture Fixation and Implants

OBJECTIVE: Evaluate the effects of supplemental fixation elements on the mechanical properties of a single ring circular fixator construct.

STUDY DESIGN: In vitro mechanical testing.

SAMPLE POPULATION: Five construct configurations (six replicates of each configuration) were used to stabilize a 1.6 cm diameter Delrin rod bone model.

OBJECTIVE: To compare the biomechanical behavior of mandibular critical-sized defects stabilized with 2 plating configurations under in vitro conditions resembling clinical situations.

SAMPLE: 24 mandibles harvested from 12 adult canine cadavers.

OBJECTIVE: To compare the biomechanical properties of locking compression plate (LCP) and a limited contact dynamic compression plate combined with an intramedullary rod (LC-DCP-R) in a cadaveric, canine, femoral fracture-gap model.

STUDY DESIGN: In vitro biomechanical study; nonrandomized, complete block (dog).

SAMPLE POPULATION: Paired cadaveric canine femora (n = 10 dogs).

OBJECTIVE: To compare the biomechanical properties of dual bone fixation (DBF) constructs to radial locking compression plating (LCP) in an ex vivo feline antebrachial fracture gap model.

STUDY DESIGN: Ex vivo study.

SAMPLE POPULATION: Cadaveric feline antebrachii (n=12 pairs).

OBJECTIVE: To compare the stiffness, angular deformation, and mode of failure of lumbar vertebral column constructs stabilized with bilateral pins and polymethylmethacrylate (Pin-PMMA) or with a unilateral (left) locking compression plate (LCP) with monocortical screws.

STUDY DESIGN: Ex vivo biomechanical, non-randomized.

SAMPLES: Cadaveric canine thoracolumbar specimens (n=16).

Fracture of the central tarsal bone is an uncommon injury in dogs and occurs predominantly in racing Greyhounds. To the authors' knowledge, this type of fracture has not been described previously in cats.

This case report describes a five-year-old Domestic Shorthair cat referred to the Centro Veterinario Luni Mare because of lameness, swelling and signs of pain in the right hindlimb caused by trauma. Clinical examination and diagnostic imaging revealed a right central tarsal bone fracture.

OBJECTIVE: To evaluate outcomes after percutaneous application of transilial pinning in dogs with seventh lumbar vertebral body fracture with concurrent lumbosacral luxation.

METHODS: We reviewed the medical records of dogs with seventh lumbar vertebral body fracture stabilized with percutaneous transilial pinning that were treated at our hospital between January 2000 and March 2014. Radiographic measurements were used for comparing craniocaudal and ventrodorsal displacement pre- and postoperatively.

OBJECTIVES: To evaluate the outcome and complications following surgical stabilization of canine tarsocrural luxations.

METHODS: Medical records of dogs which were surgically treated for tarsocrural joint instability between February 2007 and June 2014 were reviewed. Surgical technique, complications and long-term outcome (via questionnaire and Canine Brief Pain Inventory) were assessed.

Sacral fracture repair was accomplished in a cat and five dogs using a composite technique consisting of pins and polymethylmethacrylate (PMMA). In three of the cases, planned traditional iliosacral lag screw fixation was either abandoned or considered inadequate and in the other three, fracture configuration demanded an alternate repair method.

OBJECTIVE: To describe the outcome of bone plate fixation of distal radius and ulna fractures in toy breed dogs treated with conventional bone plates.

METHODS: Records of 15 toy breed dogs with distal radius and ulna fractures were retrospectively reviewed for signalment, method of fixation, complications and clinical and radiographic assessments. A telephone-based owner questionnaire was conducted to determine long-term function and client satisfaction.