Double pelvic osteotomy for the treatment of hip dysplasia in dogs

Title from PDF of title page (University of Missouri--Columbia, viewed on May 23, 2012).The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.Thesis advisor: Dr. Tony MannIncludes bibliographical references.Canine hip dysplasia (CHD) is the most common developmental orthopedic disease of dogs. Triple pelvic osteotomy (TPO) is a surgery that can be performed at 5 months of age, prior to the development of osteoarthritis. Complication rates of 33-50% have been reported for TPO and have spurned interest in a newer technique, double pelvic osteotomy (DPO). The purpose of this thesis is to review the veterinary literature about CHD, surgical treatment options for CHD, and pelvic osteotomy in particular, and to describe two studies, an in vitro study and a retrospective clinical study comparing complication rates of TPO and DPO We conducted an anatomic study of the effects of DPO on the anatomy of the juvenile canine pelvis. Axial rotation of the acetabulum was performed by DPO of 20o, 25o, and 30o and evaluated with computed tomography in an effort to evaluate which plate size most closely resembled a 20o TPO as previously recommended. The data from this study suggest that a 25o DPO results in the most similar acetabular ventroversion compared with the 20o TPO as indicated by a high concordance correlation (0.902). It was also found that most of the ventroversion with DPO comes at the level of the pubic symphysis. A retrospective clinical study of TPO and DPO was conducted to compare complication rates between the two techniques at the University of Missouri between January 1, 2006 and May 1, 2011. Minor complication rates were similar between the TPO and DPO (46.6 and 42.9%, respectively). However, two major complications (13.3% of cases) occurred with TPO and none occurred with DPO. There were no catastrophic complications. Based on this retrospective study, both the incidence and severity of complications is lower for DPO than TPO

A Field Report from the Sunken Village Wet Site (35MU4)

During low waters of September a wet site team, sponsored by an international grant from Japan, returned to further record the National Heritage Landmark wet site of Sunken Village (35MU4), Sauvie Island, Portland, Oregon (Figure 1). The one week project (September 16 through 22, 2007) was designed to accurately map the surface features ( especially over a hundred in situ acorn leaching pits and wooden stakes) and surface arti­facts (especially lithic debitage and fauna! remains) as revealed in the limited evaluation of I 060 linear feet (320 metres) of beach before the riprap repair was permitted by the U.S. Corps of Engineers in October of 2006 (Croes, Fagan and Zehendner 2007; a PDF copy of this 2006 field work is available on the web - see References below). The project continues to be co-man­aged through the direct in-put by Cultural Resources Protection Specialists Eirik Thorsgard, Confederated Tribes of the Grand Ronde, and Robert Kentta, Confederated Tribes of Siletz Indi­ans and in consultation with the Confederated Tribes of Warms Springs. A joint team provided the expertise needed to carefully map and record the Sunken Village National Historic Landmark site, consisting of(a) the SPSCC Wet Site Archaeological Inves­tigations and Laboratory team, lead by Dr. Dale Croes, and the SPSCC Computer Aided Drafting Department, lead by Professor Michael Martin, (b) the AINW geoarchaeological and laboratory team, lead by Dr. Michele Punke and Maureen Zehendner, and ( c) the internationally known Wetland Archaeological Team from the National Institute for Cultural Heritage, Nara, Japan, lead by Dr. Akira Matsui. This project was conducted through the sponsorship of a Japanese international grant under the administration of Dr. Akira Matsui, Chief Archaeologist, National Institute for Cultural Heritage, Nara, Japan, as well as support through the SPSCC Anthropology Club, an SPSCC Exceptional Faculty grant, Jean and Ray Auel, and volunteers from Portland State University and the Oregon Archaeological Society. Dr. Matsui brought four Japanese associates to participate in the field work: Dr. Naoto Yamamoto, Dr. Toru Miyao, Dr. Atsushi Iwasaki, and Dr. Tomonori Kanno (Figure 2)

Concurrent spinal epidural empyema and endocarditis in a dog

A 9-year-old neutered male Rhodesian ridgeback cross dog was evaluated for progressive non-ambulatory paraparesis, fever, and leukocytosis. The dog was diagnosed with spinal epidural empyema (SEE) and infectious endocarditis (IE) of the mitral valve based on the findings of contrast-enhanced computed tomography (CT), CT myelography, echocardiography, and bacterial culture. The report herein describes the clinical presentation, CT findings, clinical and surgical management of this case, together with the electrocardiography, and echocardiography findings. To the authors' knowledge, this is the first reported case of spinal epidural empyema likely to be caused by infectious endocarditis of the mitral valve in a dog