Imaging

Authors: White DA, Renberg WC, Roush JK, Hallman MR, Mauler DA, Milliken GA.

OBJECTIVE: To determine a flexed position for radiographic diagnosis of atlantoaxial instability (AAI) and to identify radiographic measurement cutoffs to differentiate affected dogs from neurologically healthy toy breeds.

STUDY DESIGN: Retrospective case series and prospective case controls.

Category: Imaging - Spine
Authors: Webster CE; Marcellin-Little DJ; Koballa EM; Stallrich JW; Harrysson OLA

OBJECTIVE To evaluate accuracy of articular surfaces determined by use of 2 perpendicular CT orientations, micro-CT, and laser scanning.

SAMPLE 23 cat cadavers.

Category: Imaging - Radius/Ulna
Authors: Franklin SP, Stoker AM, Lin ASP, Pownder S, Burke E, Bozynski CC, Kuroki K, Guldberg RE, Cook JL, Holmes SP

The dog is the most commonly used large animal model for the study of osteoarthritis. Optimizing methods for assessing cartilage health would prove useful in reducing the number of dogs needed for valid study of osteoarthritis and cartilage repair.

Twelve beagles had critical-sized osteochondral defects created in the medial femoral condyle of both knees. Eight dogs had T1ρ and T2 MRI performed approximately 6 months after defect creation.

Authors: de Andrade CR, Minto BW, Dreibi RM, Diogo LMI, Kawamoto FYK, Franco GG, Uscategui RAR, Dias LGGG.

OBJECTIVE: The aim of this study was to compare in vitro accuracy of femoral measurements obtained from different radiographical positions with actual femoral anatomical dimensions in dogs.

Category: Imaging
Authors: Chappell KE, Brujic D, Van Der Straeten C, Meeson R, Gedroyc W, McRobbie D, Ristic M

PURPOSE: To investigate whether magnetic field-related anisotropies of collagen may be correlated with postmortem findings in animal models.

Objectives The main purpose of this study was to describe the relationship between patellar maximal craniocaudal thickness and femoral trochlear groove depth in normal dogs and to valuate the intra-observer or inter-observer variability of maximal trochlear depth and maximal patellar craniocaudal thickness using computed tomography.

Category: Imaging

OBJECTIVE To evaluate the 3-D geometry of canine pelves and to characterize the long-term effects of juvenile pubic symphysiodesis (JPS) on pelvic geometry by comparing the pelvic configuration between littermates that did and did not undergo the procedure.

ANIMALS 24 Labrador Retriever, Golden Retriever, or Labrador Retriever–Golden Retriever crossbred service dogs from 13 litters.

Category: Imaging

OBJECTIVE: To determine the influence of methods of joint inspection during tibial plateau leveling osteotomy (TPLO) on radiographic appearance of the patellar tendon.

STUDY DESIGN: Retrospective study.

ANIMALS: Client-owned dogs (191) treated with TPLO (199).

Category: Imaging - Knee

OBJECTIVE: To determine the influence of low-intensity pulsed ultrasound (LIPUS) on radiographic healing and limb function after uncomplicated, stable osteotomies in dogs.

STUDY DESIGN: In vivo, prospective, randomized, double-blinded, placebo-control study.

SAMPLE POPULATION: Fifty client-owned dogs.

BACKGROUND: Bone healing and assessment of the state of bone bridging is an important part of clinical orthopedics, whether for fracture healing or for follow up of osteotomy procedures. Tibial tuberosity advancement (TTA) is designed to restore stability in cruciate deficient stifle joints by advancing the tuberosity while creating an osteotomy gap.