Shoulder

Authors: Maddox TW, May C, Keeley BJ, McConnell JF.
Journal: Vet Radiol Ultrasound

Computed tomography (CT) is an established technique for detecting shoulder lesions in dogs, however the clinical significance of shoulder CT lesions often remains uncertain. The purposes of this retrospective study were to describe the prevalence of CT lesions in both shoulder joints for 89 dogs presenting with thoracic limb lameness and to compare CT lesions with clinical characteristics. For all included dogs, results of a full orthopedic examination, other diagnostic tests, and signalment data were available in medical records.

Authors: Franklin SP, Devitt CM, Ogawa J, Ridge P, Cook JL.
Journal: Vet Surg

OBJECTIVES:
To describe demographic factors, treatments, and outcomes associated with shoulder instability in dogs.
STUDY DESIGN:
Multi-center, retrospective cohort study.
ANIMALS:
Dog (n = 130) with shoulder instability.
METHODS:

Authors: Fujita Y, Yamaguchi S, Agnello KA, Muto M.
Journal: VCOT

Objective: To assess the effects of arthroscopic transection of the cranial arm of the medial glenohumeral ligament on shoulder stability. Animals: Six adult Beagles. Procedures: After transection, the effects were compared with baseline values by orthopaedic and radiographic examinations, by synovial fluid analysis at two, four, and six weeks, and by arthroscopic evaluation at six weeks.

Category: Shoulder
Authors: Fujita Y, Yamaguchi S, Agnello KA, Muto M.
Journal: VCOT

Objective: To assess the effects of arthroscopic transection of the cranial arm of the medial glenohumeral ligament on shoulder stability. Animals: Six adult Beagles. Procedures: After transection, the effects were compared with baseline values by orthopaedic and radiographic examinations, by synovial fluid analysis at two, four, and six weeks, and by arthroscopic evaluation at six weeks.

Category: Shoulder
Authors: Naughton JF, Stewart MC, Ciobanu L, Constable PD.
Journal: VCOT

Objective: To assess the ability of a contrast-enhanced magnetic resonance imaging (MRI) technique to quantitatively determine glycosaminoglycan content in canine articular cartilage. Methods: Fifty-four full-thickness cartilage discs were collected from the femorotibial and scapulohumeral joints of three adult dogs immediately following euthanasia. One set of discs from each dog was analysed for glycosaminoglycan content using a colourimetric laboratory assay.

Authors: De Simone A, Gernone F, Ricciardi M.
Journal: Vet Rad Ultrasound

An 8-month-old intact male English Setter was presented with bilateral shoulder lameness. Radiographic and CT examinations demonstrated bilateral irregular margination and separation of the supraglenoid tubercle from the scapula, with involvement of the cranial articular surface of the glenoid cavity. After 30 days of cage rest, complete fusion of proximal portions of both supraglenoid tubercles and persistent un-united cranial portions of both glenoid cavities were evident.

Category: Imaging - Shoulder
Authors: Perry KL, Lam R, Rutherford L, Arthurs GI.
Journal: J Fel Med Surg

An 11-year-old cat was referred following vehicular trauma for evaluation and treatment of right thoracic limb lameness which was non-responsive to conservative management. Gait assessment revealed a severe weight-bearing right thoracic limb lameness, soft tissue swelling over the dorsal border of the scapula, crepitus upon direct palpation over the scapula and lateralisation of the scapula upon adduction of the distal limb allowing a diagnosis of scapular avulsion to be made.

Authors: Abdelhadi J, Wefstaedt P, Galindo-Zamora V, Anders A, Nolte I, Schilling N.
Journal: AJVR

Objective-To evaluate the load redistribution mechanisms in walking and trotting dogs with induced forelimb lameness. Animals-7 healthy adult Beagles. Procedures-Dogs walked and trotted on an instrumented treadmill to determine control values for peak and mean vertical force as well as verticle impulse for all 4 limbs. A small sphere was attached to the ventral pad of the right forelimb paw to induce a reversible lameness, and recordings were repeated for both gaits. Additionally, footfall patterns were assessed to test for changes in temporal gait variables.

Authors: Acquaviva AE, Miller EI, Eisenmann DJ, Stone RT, Kraus KH.
Journal: JAVMAJAAHA

Locking plates have been shown to offer improved fixation in fractures involving either osteoporotic bone or bone with lesser screw pullout strength, such as thin and flat bones. Fractures of the scapular body are one type of fracture where the screw pullout strength using conventional plate fixation may not be sufficient to overcome physiologic forces. The purpose of this study was to compare the pullout strengths of locking plates to conventional nonlocking plates in the canine scapula.

Authors: Mistieri ML, Wigger A, Canola JC, Filho JG, Kramer M.
Journal: JAAHA

Supraspinatus calcifying tendinosis is an uncommon finding in dogs. Although its radiographic appearance has been described previously, radiographs alone do not provide detailed information about the tendon parenchyma. Tendon ultrasonography has been widely applied for the diagnosis of human tendinosis, but it remains underused in dogs. This article reviews the ultrasonographic technique and variable appearance of canine supraspinatus calcifying tendinosis observed in 33 tendons. The ultrasonographic findings are described.