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: 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.

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: 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:

Authors: Benamou J, Lussier B, Alexander K, Gains MJ, Savard C.
Journal: JAVMA

Case Description-An 18-month-old spayed female domestic shorthair cat was evaluated because of left thoracic limb lameness. Clinical Findings-A firm mass was palpable in the left scapular region. On the basis of clinical signs; results of radiographic, ultrasonographic, and cytologic evaluations; and findings on magnetic resonance imaging, an aneurysmal bone cyst (ABC) of the scapula was strongly suspected. Treatment and Outcome-Considering the large size of the mass and the poor prognosis for return to function of the left thoracic limb, amputation was elected.

Authors: R. L. Plesman (1), S. French (2), S. Nykamp (3), P. B. Ringwood (2)
Journal: VCOT

A seven-month-old cat was referred, after having been missing for one week, for evaluation and treatment of a right forelimb injury and facial fractures. On physical examination, a moderate partial weight-bearing lameness of the right forelimb was present, with palpable crepitus in the glenohumeral joint. Dental radiographs revealed a midline palatal fracture and rostral fractures of the left maxillary canine alveolar bone. Radiographs of the right shoulder revealed a Type III or intra- articular fracture of the scapula with moderate displacement of the fracture at the articular surface.

Category: Shoulder - Trauma
Authors: Fitzpatrick N, van Terheijden C, Yeadon R, Smith TJ.
Journal: Vet Surg

OBJECTIVE: To establish whether osteochondral autograft transfer (OAT) procedures for osteochondritis dissecans (OCD) of the canine caudocentral humeral head would restore articular contour, resurface osteochondral defects, and resolve lameness in dogs with OCD.
STUDY DESIGN: Case series.
ANIMALS: Dogs (n=14) with caudocentral humeral head OCD (16 shoulders).

Category: Shoulder
Authors: Schaefer SL, Baumel CA, Gerbig JR, Forrest LJ.
Journal: Vet Rad Ultrasound

Our goal was to evaluate the ability of three magnetic resonance arthrography (MRA) techniques to improve visualization of soft tissue stabilizing components of the canine shoulder. The optimum concentration of gadolinium (gadodiamide) for MRA was determined by imaging seven individual shoulders with one of seven dilutions of 0.5 mol/l gadodiamide in saline; (1:100, 1:400, 1:800, 1:1000, 1:1200, 1:1400, and 1:1600). For this, sagittal and dorsal T1-weighted fat saturation (T1WFS) images were used.

Category: Imaging - Shoulder
Authors: Bergenhuyzen AL, Vermote KA, van Bree H, Van Ryssen B.
Journal: VCOT

OBJECTIVE: To report the long-term clinical outcomes and radiographic results in dogs diagnosed with partial bicipital rupture and treated by arthroscopic tenotomy. MATERIALS AND METHODS: The medical records of dogs that had undergone arthroscopic tenotomy were retrospectively reviewed. Inclusion criteria for this study were: performance of an arthroscopic tenotomy between August 1999 and July 2007, availability of arthroscopic records data for review, and ability to obtain follow-up data for more than one year after arthroscopic tenotomy.