Trauma

Authors: Angle TC, Gillette RL, Weimar WH.
Journal: VCOT

Objectives: The purpose of this study was to quantify and determine the degree to which dogs experience negative displacement of the paw during movement initiation on natural surfaces, the frequency of that displacement, and whether or not the negative displacement could yield injuries. Methods: Seven retired racing Greyhound dogs were selected to participate in sprint starts on two natural (non-vegetated and vegetated) surfaces. Kinematic analysis was conducted to quantify the displacements.

Authors: Eskelinen EV, Liska WD, Hyytiäinen HK, Hielm-Björkman A.
Journal: VCOT

A 27-kg German Shorthaired Pointer was referred for evaluation due to the complaint of left pelvic limb lameness and signs of pain in the left stifle joint. Radiographs revealed signs of a healed supracondylar femoral fracture that had been previously repaired at another hospital with an intramedullary pin and two cross pins. In addition, there were signs of severe osteoarthritis (OA). The OA had been managed medically with administration of carprofen and nutraceuticals for nine months without any improvement. Left total knee replacement (TKR) surgery was performed to alleviate signs of pain.

Authors: Sonnenschein B, Dickomeit MJ, Bali MS.
Journal: VCOT

An 18-year-old male, castrated Domestic Shorthaired cat was presented with the complaint of acute severe lameness of the left pelvic limb. There was no history of trauma, apart from a distal physeal left femoral fracture that had been repaired 17 years previously. Radiology revealed a displaced distal metaphyseal femoral fracture with marked areas of bone lysis and periosteal proliferations. A pathological fracture due to a bone neoplasia was suspected. An amputation with coxofemoral disarticulation was performed. Histopathology confirmed the tentative diagnosis of appendicular osteo-sarcoma.

Authors: Belch A, Fitzpatrick N, Farrell M.
Journal: VCOT

Two Domestic Shorthaired cats were admitted after sustaining multiligamentous injuries of the stifle joint. In one cat, prosthetic ligamentous reconstruction was unsuccessful at maintaining normal stifle stability. Both cats were treated with stifle arthrodesis using internal fixation with a plate and screws without external coaptation. In one case, arthrodesis was achieved using a 2.7 mm 16-hole dynamic compression plate placed medially. In the second case, a 2.7 mm 14-hole dynamic compression plate was placed cranially.

Authors: Pozzi A, Risselada M, Winter MD.
Journal: JAVMA

Objective-To evaluate fracture healing after minimally invasive plate osteosynthesis (MIPO) or open reduction and internal fixation (ORIF) of coexisting radius and ulna fractures in dogs via ultrasonography and radiography. Design-Prospective cohort study. Animals-16 dogs with radius-ulna fractures that underwent MIPO (n = 9; 2 dogs were subsequently not included in the analyses because of incomplete follow-up information) or ORIF (7). Procedures-Dogs in the 2 treatment groups were matched by age, body weight, and configuration of the fractures.

Authors: Johnson P, Beltran E, Dennis R, Taeymans O.
Journal: Vet Radiol Ultrasound

The purpose of this study was to describe the magnetic resonance imaging (MRI) characteristics of suspected instability in dogs with vertebral fractures or subluxations. Eleven dogs that had MRI examinations of the spine prior to surgical stabilization of vertebral fractures and/or subluxations were included in the study. Nine dogs also had survey radiographs. Four dogs had cervical fracture or fracture-subluxation and presented with tetraplegia with intact nociception (n = 2) or nonambulatory tetraparesis (n = 2).

Authors: Milgram J, Hod N, Benzioni H.
Journal: Vet Surg

OBJECTIVE:
To determine if normograde and retrograde pinning of the distal humeral fragment, to maximize pin purchase in this fragment, would damage vital structures in and around the elbow and shoulder joints in dogs.
STUDY DESIGN:
Anatomic study.
SAMPLE POPULATION:
Cadaveric dogs (n = 12; 12 thoracic limb pairs).
METHODS:

Authors: Rochereau P, Diop A, Maurel N, Bernarde A.
Journal: Vet Surg

OBJECTIVE:
To compare biomechanical properties of a humeral condylar fracture model stabilized either with a 4.0-mm short-threaded cancellous screw (CCS) or with a 4.0-mm short-threaded cannulated screw (CNS).
STUDY DESIGN:
In vitro biomechanical study.
SAMPLE POPULATION:
Bilateral cadaveric canine humeri (n = 20).
METHODS:

Authors: Meeson RL, Goodship AE, Arthurs GI.
Journal: Vet Surg

OBJECTIVE:
To determine mechanical differences between two plates with different requirements for supplementary casting after pancarpal arthrodesis (PCA): the Veterinary Instrumentation Hybrid Dynamic Compression Plate (HDCP), and the OrthoMed CastLess Arthrodesis Plate (CLP).
STUDY DESIGN:
In vitro mechanical analysis.
SAMPLE POPULATION:
HDCP(n = 10), CLP(10).
METHODS:
Single-cycle load to failure using a materials-testing machine and cyclic loading between 38 and 380 N ± 5% to simulate estimated in vivo loads until failure or 10(6) cycles.
RESULTS:

Authors: Fitzpatrick N, Yeadon R, Smith TJ, Johnson J, Baltzer WI, Amils R, Farrell M, Frost A, Holsworth IG.
Journal: Vet Surg

OBJECTIVES:
To report surgical technique and clinical outcome of shoulder arthrodesis in dogs.
STUDY DESIGN:
Multicenter clinical case series.
ANIMALS:
Dogs (n = 14).
METHODS: