Oculo‐skeletal dysplasia in five Labrador Retrievers     

Lionel Sebbag  Alexandra Riggs  Joyce Carnevale 《Veterinary ophthalmology》2020,23(2):386-393

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Black-hair follicular dysplasia in a New Zealand Huntaway dog     

JS Munday  AF French  GRK McKerchar 《New Zealand veterinary journal》2013,61(3):170-172

CASE HISTORY: A 6-year-old intact male New Zealand Huntaway dog had slowly progressive alopecia that was first observed at 12 weeks of age.

CLINICAL FINDINGS: Patchy alopecia was confined to the black-haired areas of the body, and was most evident on the head and dorsum of the body; tan-haired areas of skin appeared normal. Histological examination of black-haired skin revealed distended melanocytes and large aggregates of melanin within, and surrounding, the hair follicles and the epidermis. Macrophages distended with melanin were also visible within the perifollicular and superficial dermis, and follicular lumina were often plugged by keratin that contained aggregates of melanin. The follicles were dysplastic and few hair shafts were visible emerging from follicular infundibula within the sections.

DIAGNOSIS: The clinical and histological findings were consistent with black-hair follicular dysplasia (BHFD).

CLINICAL RELEVANCE: This is the first report of BHFD in a dog in New Zealand, and is the first report in a Huntaway. The most significant effect of BHFD is a predisposition to follicular plugging and secondary bacterial skin infections. Due to the hereditary nature of the follicular dysplasias, breeding from affected dogs should be discouraged. Histological examination of the skin is required to differentiate between the different follicular dysplasias as well as differentiating between follicular dysplasia and follicular atrophy due to endocrinopathy.  相似文献   

Surgical management of suspected congenital luxation of the radial head in three dogs     

KJ Clark  RM Jerram  AM Walker 《New Zealand veterinary journal》2013,61(2):103-109

Abstract

CASE HISTORIES: Three dogs, aged between 11 and 20 weeks, were presented with unilateral forelimb lameness, with an associated bony prominence on the lateral elbow.

CLINICAL FINDINGS AND DIAGNOSIS: Radiographs revealed a caudolateral luxation of the radial head in all cases, consistent with a diagnosis of suspected congenital luxation of the radial head. Surgical reduction and stabilisation involved open reduction of the radial head, and in two cases the use of a trans articular pin.

CLINICAL RELEVANCE: Congenital luxation of the radial head is an uncommon condition that has conflicting reports in the literature regarding its cause, heritability, breed predisposition, treatment and prognosis. The three cases here occurred in young dogs of English Bull Terrier, Jack Russell Terrier, and Staffordshire Bull Terrier breeds. Surgical reduction and stabilisation provided successful outcomes, in all cases. Only six cases of congenital luxation of the radial head managed surgically have previously been reported in the literature.  相似文献   

木制楼梯扶手弯头反面成型面数控成组夹具设计     

叶明亮  夏广岚  马岩 《林业机械与木工设备》2008,36(5):31-33

木制楼梯扶手弯头反面成型面是未制楼梯扶手弯头后序加工的工艺基准.本文以空间木制楼梯扶手弯头为研究对象,叙述了该成组夹具的谨许方法.该成组夹具可在一定范围内适应木制楼梯扶手弯头参数的变化,可减少对应数控机床的运动维数,对实现空间未制楼梯扶手弯头数控加工的国产化具有重要的意义.  相似文献   

ULTRASOUND EVALUATION OF THE COXOFEMORAL JOINTS OF THE CANINE NEONATE   总被引：1，自引：0，他引：1  

Ronald J.  Greshake  BS  DVM  Norman  Ackerman  DVM 《Veterinary radiology & ultrasound》1993,34(2):99-104

The effectiveness of ultrasound in depicting the normal anatomy of the coxofemoral joint in puppies was evaluated. Ultrasound images were obtained from twenty Springer Spaniel puppies ranging from one day to twelve weeks of age. The anatomy of the hip joint could be identified up to eight weeks of age. By twelve weeks of age the degree of ossification prevented complete hip joint evaluation. Three different views were utilized. The longitudinal and dorsolateral views were the most useful. Motion of the femoral head within the acetabulum could be observed. Measurements of the acetabulum, femoral head and joint space could be obtained however these measurements were inconsistent. The technique appears to be useful for depicting the anatomy of the neonatal coxofemoral joint however, additional studies utilizing both normal and dysplastic puppies are recommended to determine if this examination will be useful in discriminating between normal and dysplastic puppies.  相似文献   

Equine laryngeal dysplasia          下载免费PDF全文

S. Z. Barakzai 《Equine Veterinary Education》2016,28(5):276-283

Equine 4th and 6th branchial arch defects are not uncommon in the equine population at large but can be challenging to diagnose and treat. An understanding of the anatomical structures that can be involved and how structural abnormalities may affect laryngeal function is important for clinicians faced with such cases. Diagnosis is often made using resting endoscopic examination alone but, in many cases, laryngeal ultrasound, radiography and 3‐dimensional (3D) imaging techniques can be useful in confirming a diagnosis and for detecting which structures are abnormal. Exercising endoscopy is an important tool when ascertaining whether treatment is an option, for guiding treatment choice and making a prognosis for athletic function.  相似文献   

COMPUTED TOMOGRAPHIC FINDINGS IN CANINE ELBOWS ARTHROSCOPICALLY DIAGNOSED WITH EROSION OF THE MEDIAL COMPARTMENT: AN ANALYTICAL METHOD COMPARISON STUDY          下载免费PDF全文

Eva Coppieters  Bernadette Van Ryssen  Henri van Bree  Geert Verhoeven  Bart Broeckx  Evelien de Bakker  Dieter Deforce  Ingrid Gielen 《Veterinary radiology & ultrasound》2016,57(6):572-581

Medial compartment erosion is an advanced stage of medial coronoid disease, an important cause of elbow lameness in dogs, with treatment and the expected prognosis depending on the extent of the cartilage lesions. The identification of specific computed tomographic (CT) findings might facilitate the nonsurgical diagnosis and add to treatment decision making. Aims of this retrospective, analytical, method comparison study were to describe CT findings in elbows of dogs arthroscopically diagnosed with medial compartment erosion and to compare CT vs. arthroscopic findings. A total of 56 elbows met inclusion criteria. Elbows with focal (n = 13), diffuse (n = 11), and complete (n = 32) erosion were compared. Prevalence findings for CT lesions were as follows: periarticular osteophytosis (100%), abnormal shape of the medial coronoid process of the ulna (96.4%), and subchondral bone defect of the medial part of the humeral condyle (MHC; 96.4%). The three groups significantly differed for presence of medial coronoid process fragmentation, radial head subchondral bone sclerosis, and widening of the humeroulnar joint space. No significant agreement was found between CT and arthroscopy for presence of a subchondral bone defect of the MHC. A significant agreement was found between CT and arthroscopy for presence of fragmentation of the medial coronoid process. However, some of the calcified body/fragment(s) visualized on CT in the region of the medial coronoid process could not be identified via arthroscopy. Findings indicated that an accurate estimation of the extent of the elbow cartilage lesions still requires arthroscopic joint inspection.  相似文献   

Arthroscopically‐assisted removal of an osteochondral fragment from the equine elbow using a caudo‐medial approach     

J. J. Bobkiewicz  S. E. Hodgson 《Equine Veterinary Education》2012,24(4):172-175

An 8‐year‐old Polo pony mare was admitted for investigation of lameness related to swelling of the elbow. An intra‐articular fragment from the proximo‐medial radius was identified on radiographic examination. The fragment was removed arthroscopically under general anaesthesia via a caudo‐medial approach to the elbow joint.  相似文献   

我国木制楼梯扶手弯头数控加工的工业化前景与效益预测   总被引：2，自引：0，他引：2  

夏广岚  叶明亮 《林业机械与木工设备》2007,35(12):4-6,12

在介绍国内外木制楼梯扶手弯头加工发展现状的基础上,针对市场加工难度最大的木制楼梯扶手弯头的数控加工问题,通过对国内外加工方法的分析,阐述了木制楼梯扶手弯头制品数控加工的工业化前景与效益,同时指出要提高木制楼梯扶手弯头的加工质量和生产率,必须实现数控技术,以及木制楼梯扶手弯头的专用数控加工机床在我国的发展前景.  相似文献   

COMPARISON OF CLINICAL, RADIOGRAPHIC, COMPUTED TOMOGRAPHIC, AND MAGNETIC RESONANCE IMAGING METHODS FOR EARLY PREDICTION OF CANINE HIP LAXITY AND DYSPLASIA     

MÁRIO M. D. GINJA  ANTÓNIO J. FERREIRA  SANDRA S. JESUS  PEDRO MELO-PINTO  JOSÉ BULAS-CRUZ  MARIA A. ORDEN  FIDEL SAN-ROMAN  MARIA P. LLORENS-PENA  JOSÉ M. GONZALO-ORDEN 《Veterinary radiology & ultrasound》2009,50(2):135-143

The purpose of the study was to use two palpation methods (Bardens and Ortolani), a radiographic distraction view, three computed tomography (CT) measurements (dorsolateral subluxation score, the lateral center-edge angle, and acetabular ventroversion angle) and two magnetic resonance (MR) imaging hip studies (synovial fluid and acetabular depth indices) in the early monitoring of hip morphology and laxity in 7–9 week old puppies; and in a follow-up study to compare their accuracy in predicting later hip laxity and dysplasia. The MR imaging study was performed with the dog in dorsal recumbency and the CT study with the animal in a weight-bearing position. There was no association between clinical laxity with later hip laxity or dysplasia. The dorsolateral subluxation score and the lateral center-edge angle were characterized by a weak negative correlation with later radiographic passive hip laxity (−0.26< r <−0.38, P <0.05) but its association with hip dysplasia was not significant. There was an association between early radiographic passive hip laxity and synovial fluid index with later passive hip laxity (0.41< r <0.55, P <0.05) and this was significantly different in dysplastic vs. nondysplastic hips ( P <0.05). There was no association between the remaining variables and later hip laxity or dysplasia. The overlapping ranges of early passive hip laxity and synovial fluid index for hip dysplasia grades and the moderate correlations with the later passive hip laxity make the results of these variables unreliable for use in predicting hip laxity and dysplasia susceptibility.  相似文献