TL;DR: The highly sensitive and relatively specific uptake allowed localisation and characterisation or exclusion of skeletal lesions in most dogs, and in two dogs with unilateral uptake of multiple joints, no diagnostic benefit was gained from scintigraphy.
Abstract: 99mTechnetium methylene diphosphonate (99mTc-MDP) scintigraphy was performed in 14 dogs of different breeds after clinical lameness examination, radiography and synovial fluid analysis failed to localise lameness to a specific area of pain. The scintigraphic protocol included an intravenous injection of 17 MBq 99mTc-MDP/kg bodyweight and vascular, soft tissue and bone phase scans in standardised positions with a low-energy all-purpose collimator. Confirmation of diagnosis was achieved in nine dogs by arthroscopy, repeated lesion-orientated radiography, computed tomography and response to treatment. In seven cases, bone phase scans showed single elbow uptakes, in two cases unilateral limb uptake, and in one case each a single shoulder and tibia uptake; in three cases there was no increased uptake. Vascular and soft tissue phase images did not reveal additional information. Diagnosis of humeral condyle fissures, a fragmented medial coronoid process, panosteitis and arthropathy was possible in nine cases. Skeletal pathology was ruled out in three normal scintigrams. In two dogs with unilateral uptake of multiple joints, no diagnostic benefit was gained from scintigraphy. The highly sensitive and relatively specific uptake allowed localisation and characterisation or exclusion of skeletal lesions in most dogs.
TL;DR: In this article, the common causes of hind limb lameness in young dogs are discussed, including legg-calve-perthes, hip dysplasia, cruciate ligament injury, patella luxation, osteochondrosis, hypertrophic osteodystrophy, panosteitis and common growth plate fractures.
Abstract: This article reviews the common causes of hind limb lameness in young dogs. Legg-Calve-Perthes, hip dysplasia, cruciate ligament injury, patella luxation, osteochondrosis, hypertrophic osteodystrophy, panosteitis, and common growth plate fractures are described. Emphasis is placed on the clinical signs, diagnosis, and treatment options available for each disease.
TL;DR: The salient points of the diagnosis and treatment of the more common conditions responsible for forelimb lameness in the skeletally immature dog, including osteochondrosis, are discussed.
Abstract: CANINE lameness, as a result of non-traumatic causes, has assumed greater importance in recent years as the number of dogs presenting with injuries resulting from road traffic accidents has declined. Coupled with an apparent increase in the prevalence of osteochondrosis, a significant proportion of young dogs now present with lameness with a non-traumatic aetiology. It is not known whether this is because of an increased awareness of these disorders by the practitioner or a genuine increase in prevalence due, for example, to changes in genetic or environmental influences. Owing to difficulties with diagnosis and controversy surrounding treatment regimens, appropriate management of the young dog presented with forelimb lameness can be problematic. This article discusses the salient points of the diagnosis and treatment of the more common conditions responsible for forelimb lameness in the skeletally immature dog. A second article, to be published at a later date, will discuss hindlimb lameness.
TL;DR: In late stages of panosteitis, after disappearance of clinical signs, the scintigrams were negative, whereas radiographs continued to reveal the presence of sclerotic lesions, whereas Radiography was more specific and essential to establish a positive diagnosis.
Abstract: A dog with recurrent active panosteitis was monitored with weekly skeletal radiographs and radioisotopic bone scintigrams performed on the same day. Comparison of results obtained by the two techniques indicated that scintigrams were more sensitive in revealing early lesions. Radiography was more specific and essential to establish a positive diagnosis. The sensitivity of radiographic and scintigraphic evidence was comparable during the midportions of the disease while bone resorption and deposition were most active. In late stages of panosteitis, after disappearance of clinical signs, the scintigrams were negative, whereas radiographs continued to reveal the presence of sclerotic lesions.