Relation of the Norberg angle and position of the femoral head centre to the dorsal acetabular edge in evaluation of canine hip dysplasia

2010 ◽  
Vol 23 (06) ◽  
pp. 433-438 ◽  
Author(s):  
L. Skurková ◽  
M. Hluchý ◽  
M. Lacková ◽  
M. Mihalová ◽  
V. Ledecký
Keyword(s):  
Femoral Head ◽  
Scoring System ◽  
Hip Dysplasia ◽  
Diagnostic Process ◽  
Radiographic Examination ◽  
Screening Programs ◽  
Ultrasound Diagnostics ◽  
Two Parameters ◽  
Canine Hip Dysplasia ◽  
Norberg Angle

SummaryCanine hip dysplasia (CHD) is a locomotive-system disease in dogs, which in many countries is the target of screening programs aimed at reducing the prevalence of CHD among descendants of predisposed dog breeds. Despite the efforts to apply genetic testing or ultrasound diagnostics in diagnosing CHD (as is common in human medicine), the main diagnostic process in veterinary medicine is by radiographic examination. The main two parameters which are used in diagnosing HD are the Norberg angle (NA) and the position of femoral head centre to the dorsal acetabular edge (FHC/DAE). We examined the relationship between these two parameters in the process of the determination of CHD degree by evaluating 225 randomly selected radiographs which were made during the period from 1993 to 2008. The aim of our study was to examine the validity of these two parameters in CHD classification as used in three different classification programs. Using Pearson’s correlation coefficient, the value of which was 0.85 (p <0.05), we observed a positive correlation. Comparing the three scoring systems for CHD evaluation, we found that the final degree of CHD was similar for 78% to 85% of cases using Flückiger’s scoring system versus a modified scoring system of 5 parameters without FHC/DAE. Results were significant.

scholarly journals Treatment of canine hip dysplasia using triple pelvic osteotomy

2012 ◽  
Vol 48 (No. 1 - 2) ◽  
pp. 41-46
Author(s):  
K. Altunatmaz ◽  
R. Yucel ◽  
Y. Devecioglu ◽  
M. Saroglu ◽  
S. Ozsoy
Keyword(s):  
Femoral Head ◽  
Hip Dysplasia ◽  
Pelvic Osteotomy ◽  
Hereditary Disease ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Hip Joints ◽  
Mild Dysplasia ◽  
Canine Hip Dysplasia ◽  
Norberg Angle

In this study, triple pelvic osteotomy (TPO) was carried out in a total of 22 dysplastic dogs, of which 9 were treated bilaterally and 13 unilaterally, and the position of the acetabulum was changed in a total of 31 hip joints using a special plate. It was established that, of the treated hip joints, 16 had severe, 12 medium and 3 mild dysplasia, the Norberg angle was between 70&ndash;92&deg; and that the covering rate of the acetabulum over the femoral head changed between 5&ndash;42&deg;. In the radiographs taken immediately after the operation, the covering rate of the acetabulum over the femoral head was determined to be very good in 25 hip joints (75% and over) and good in 6 joints (60&ndash;75%). In 5 cases, some of the screws holding the plate in place were seen to loosen in radiographs. However, this did not have any effect on the angle given to the acetabulum. In radiographs obtained 6&ndash;48 months later, degenerative joint disease was not encountered in 29 cases, with the exception of 2 cases. It was concluded that hip dysplasia, which is a hereditary disease, can be treated reasonably successfully in young dogs with TPO carried out before degenerative changes begin to occur in the joint.

Long-term Results of Conservative Treatment, Excision Arthroplasty and Triple Pelvic Osteotomy for the Treatment of Hip Dysplasia in the Immature Dog

1997 ◽  
Vol 10 (02) ◽  
pp. 101-110 ◽  
Author(s):  
J. Dupuis ◽  
G. Beauregard ◽  
N. H. Bonneau ◽  
L. Breton ◽  
J. Planté
Keyword(s):  
Femoral Head ◽  
Conservative Treatment ◽  
Head And Neck ◽  
Hip Dysplasia ◽  
Clinical Signs ◽  
Pelvic Osteotomy ◽  
Long Term Results ◽  
Radiographic Examination ◽  
Conservative Group ◽  
Excision Arthroplasty

SummaryThe efficiency of conservative treatment, excision arthroplasty of the femoral head and neck and triple pelvic osteotomy for the treatment of hip dysplasia in the immature dog were compared using locomotor, physical and radiographic examinations and owner’s evaluation. Cases selected for this study were dogs diagnosed with bilateral hip dysplasia, initially admitted with clinical signs (lameness, pain), immature at the beginning of the treatment (less than 12 months of age), with both hips subjected to the same treatment (conservative treatment, excision arthroplasty of the femoral head and neck or triple pelvic osteotomy). These dogs never showed any musculoskeletal problems other than hip dysplasia and the surgical treatment had been completed at least 20 months prior to re-evaluation time. Fourteen hips were re-evaluated in the conservative group, 16 in the triple pelvic osteotomy group and ten in the excision arthroplasty group. Locomotor, physical and owner’s evaluations demonstrated the superiority of the triple pelvic osteotomy. These evaluations also showed that excision arthroplasty was more efficient than conservative treatment. Radiographic examination demonstrated the obvious superiority of the triple pelvic osteotomy over conservative treatment.Locomotor, physical and owner’s evaluations demonstrated the superiority of the triple pelvic osteotomy over conservative treatment and excision arthroplasty for the treatment of hip dysplasia in the immature dog. Radiographic examination demonstrated the obvious superiority of the triple pelvic osteotomy over conservative treatment for joint congruence and control of degenerative joint disease.

scholarly journals Effects of pelvis rotation on the projected radiographic position of the femoral head in relationship to the acetabulum

2017 ◽  
Vol 62 (No. 7) ◽  
pp. 377-385 ◽  
Author(s):  
J. Martins ◽  
B. Colaco ◽  
S. Alves-Pimenta ◽  
A. Ferreira ◽  
M. Ginja
Keyword(s):  
Femoral Head ◽  
Hip Dysplasia ◽  
Scoring Systems ◽  
Normal Position ◽  
Pelvis Rotation ◽  
Mean Differences ◽  
The Right ◽  
Extended View ◽  
Norberg Angle

The aim of this study was to describe the influence of pelvis rotation on the projected radiographic position of the femoral head in relationship to the acetabulum in the standard ventrodorsal hip extended view, i.e. Norberg angle, pelvic thickness at the level of the cranial effective acetabular rim, femoral head subluxation index, femoral head subluxation category and femoral head-acetabular distance. Twelve adult dogs of large and giant breeds were radiographed in standard hip extended view and with 2°, 4° and 6° of rotation on the right and left sides. Norberg angle, pelvic thickness, subluxation index, subluxation category and femoral head-acetabular distance were measured on radiographs and analysed comparing a normal position with positions of different degrees of rotation for the dependent and non-dependent side. All the studied parameters showed adequate repeatability. Norberg angle and femoral head-acetabular distance did not show significant mean differences in all degrees of rotated pelvis (P &gt; 0.05). The pelvic thickness showed an increase with the degree of rotation on the dependent side (P &lt; 0.05) and a slight decrease on the non-dependent side (P &gt; 0.05). The subluxation index and subluxation category showed an increase with the degree of rotation on the dependent side and a decrease on the non-dependent side (P &lt; 0.05). As the subluxation index and subluxation category are parameters used in the classification of the main international hip dysplasia scoring systems, pelvic rotation can impair the final hip score, especially in scoring systems that are based on the worst joint.

Early Diagnosis of Hip Dysplasia – A Stress-Radiographic Study

1995 ◽  
Vol 08 (02) ◽  
pp. 114-117 ◽  
Author(s):  
J. S. Madsen ◽  
E. Svalastoga
Keyword(s):  
Femoral Head ◽  
Early Diagnosis ◽  
Hip Dysplasia ◽  
Radiographic Examination ◽  
Radiographic Evaluation ◽  
Radiographic Study ◽  
German Shepherd ◽  
Lateral Dislocation ◽  
The Future ◽  
Maximal Reduction

SummaryPresently, the diagnosis of hip dysplasia is based on a single pelvic radiographic examination of the dog at the age of 12 to 24 months. However, by this method, only a static appearance of the coxofemoral joint is evaluated. The purpose of our study was to diagnose hip dysplasia in young dogs and consequently, we included a radiographic evaluation of the dynamic appearance of the coxofemoral joint.A stress-radiographic examination was applied to 23 German Shepherd Dogs at the age of six and 12 months to obtain maximal reduction and maximal dislocation of the coxofemoral joint. Finally, at the age of 12 months, the hips were examined radiographically using the conventional criteria for hip dysplasia.At the age of six months, dogs with hip dysplasia showed significantly greater joint laxity and lateral dislocation of the femoral head than normal dogs. However, some predysplastic dogs, with lateral dislocation of the femoral head, developed normal hips and would be approved for breeding. Based on these findings, we conclude that stress-radiographic examinations of young dogs provide important, hitherto unrecognized, information of relevance in the future screening programmes to reduce the incidence of hip dysplasia.A stress-radiographic examination of young dogs provides important, hitherto unrecognized, information of relevance in the future screening programmes to reduce the incidence of hip dysplasia.

Canine hip dysplasia radiographic screening. Prevalence of rotation of the pelvis along its length axis in 7,012 conventional hip extended radiographs

2007 ◽  
Vol 20 (04) ◽  
pp. 296-298 ◽  
Author(s):  
T. Cachon ◽  
D. Fau ◽  
C. Carozzo ◽  
E. Viguier ◽  
F. Collard ◽  
...  
Keyword(s):  
Femoral Head ◽  
Hip Dysplasia ◽  
Femoral Head Coverage ◽  
Left Hand ◽  
Radiographic Screening ◽  
Pelvis Rotation ◽  
The Right ◽  
Canine Hip Dysplasia

SummaryThe prevalence of rotation of the pelvis along its length axis was noted, as was the number of rotations towards the right or left hand side of the dog, on 7,012 conventional hip extended radiographs, which were sent for official screening. 29.8% of the radiographs showed a rotation the pelvis. The rotation was statistically more frequent towards the left hand side of the dog. The number of rejected radiographs for too important pelvis rotation was only 5.2%. The consequences of the pelvis rotation on the Norberg-Olsson angle, on the dorsal femoral head coverage, and in the aspect of cranial acetabular edge have to be taken into account when scoring the dog for hip dysplasia.

scholarly journals Genetic dissection of canine hip dysplasia phenotypes and osteoarthritis reveals three novel loci

BMC Genomics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Lea Mikkola ◽  
Saila Holopainen ◽  
Tiina Pessa-Morikawa ◽  
Anu K. Lappalainen ◽  
Marjo K. Hytönen ◽  
...  
Keyword(s):  
Hip Dysplasia ◽  
Cartilage Degradation ◽  
Chromosome 9 ◽  
Chromosome 1 ◽  
Severe Dysplasia ◽  
Genetic Dissection ◽  
Genes Encoding ◽  
Joint Incongruity ◽  
Canine Hip Dysplasia ◽  
Norberg Angle

Abstract Background Hip dysplasia and osteoarthritis continue to be prevalent problems in veterinary and human medicine. Canine hip dysplasia is particularly problematic as it massively affects several large-sized breeds and can cause a severe impairment of the quality of life. In Finland, the complex condition is categorized to five classes from normal to severe dysplasia, but the categorization includes several sub-traits: congruity of the joint, Norberg angle, subluxation degree of the joint, shape and depth of the acetabulum, and osteoarthritis. Hip dysplasia and osteoarthritis have been proposed to have separate genetic etiologies. Results Using Fédération Cynologique Internationale -standardized ventrodorsal radiographs, German shepherds were rigorously phenotyped for osteoarthritis, and for joint incongruity by Norberg angle and femoral head center position in relation to dorsal acetabular edge. The affected dogs were categorized into mild, moderate and severe dysplastic phenotypes using official hip scores. Three different genome-wide significant loci were uncovered. The strongest candidate genes for hip joint incongruity were noggin (NOG), a bone and joint developmental gene on chromosome 9, and nanos C2HC-type zinc finger 1 (NANOS1), a regulator of matrix metalloproteinase 14 (MMP14) on chromosome 28. Osteoarthritis mapped to a long intergenic region on chromosome 1, between genes encoding for NADPH oxidase 3 (NOX3), an intriguing candidate for articular cartilage degradation, and AT-rich interactive domain 1B (ARID1B) that has been previously linked to joint laxity. Conclusions Our findings highlight the complexity of canine hip dysplasia phenotypes. In particular, the results of this study point to the potential involvement of specific and partially distinct loci and genes or pathways in the development of incongruity, mild dysplasia, moderate-to-severe dysplasia and osteoarthritis of canine hip joints. Further studies should unravel the unique and common mechanisms for the various sub-traits.

Simultaneous Bilateral Femoral Head and Neck Ostectomy for the Treatment of Canine Hip Dysplasia

2005 ◽  
Vol 41 (3) ◽  
pp. 166-170 ◽  
Author(s):  
Elizabeth A. Rawson ◽  
Michael G. Aronsohn ◽  
Ronald L. Burk
Keyword(s):  
Femoral Head ◽  
Head And Neck ◽  
Hip Dysplasia ◽  
Normal Activity ◽  
Postoperative Recovery ◽  
Activity Levels ◽  
Hip Disease ◽  
Surgical Options ◽  
Owner Satisfaction ◽  
Canine Hip Dysplasia

Simultaneous bilateral femoral head and neck ostectomy (FHO) was performed on 15 dogs for severe bilateral hip dysplasia. A follow-up survey was performed 6 to 48 months after surgery to assess the postoperative recovery and activity levels of the operated dogs. All dogs had normal activity levels and were pain free according to their owners. Owner satisfaction regarding the outcome of the surgery was high. Simultaneous bilateral FHO was a viable surgical option for the treatment of painful bilateral hip disease in dogs, especially when other surgical options were not indicated or were cost prohibitive.

Traumatic Coxofemoral Luxation in Dysplastic Dogs Managed with a Triple Pelvic Osteotomy: Results in four Dogs

1997 ◽  
Vol 10 (03) ◽  
pp. 136-140 ◽  
Author(s):  
D. D. Lewis ◽  
S. C. Kerwin ◽  
S. T. Murphy
Keyword(s):  
Femoral Head ◽  
Hip Dysplasia ◽  
External Rotation ◽  
Pelvic Osteotomy ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Contralateral Limb ◽  
Norberg Angle

SummaryTriple pelvic osteotomy (TPO) was used in the treatment for traumatic coxofemoral luxations in four adult, large breed dogs with hip dysplasia. Initial closed reductions failed in three and one dog had an initial closed reduction and subsequent open reduction of the coxofemoral luxation that failed. Hip dysplasia was thought to be a prominent factor contributing to the reluxation. TPO successfully maintained reduction of the coxofemoral luxation in all of the dogs. An increase in dorsal acetabular coverage of the femoral head following TPO was demonstrated by an increased Norberg angle. The improved congruency was thought to maintain reduction of the femoral head in the acetabulum and decrease stresses on the joint capsule, allowing healing to occur. Long-term (median: 343, mean ± SD: 406 ± 226 days follow-up) function of the affected limb was comparable to the contralateral limb. Three of the four dogs did not have radiographic progression of coxofemoral degenerative joint disease of the affected joint and differences in the progression of degenerative joint disease were not evident between the affected and the contralateral coxofemoral joint. A decrease in abduction and external rotation and an increase in internal rotation following TPO was noted in the affected coxofemoral joint. Our results establish the utility of this procedure in dysplastic dogs with traumatic coxofemoral luxations.Triple pelvic osteotomy used in the treatment for traumatic coxofemoral luxation in four adult, large breed dogs with hip dysplasia successfully maintained reduction and resulted in satisfactory limb function in all patients.

scholarly journals Juvenile pubic symphysiodesis associated with pectineus myectomy for treatment of hip dysplasia in dog

2021 ◽  
Vol 49 ◽  
Author(s):  
Daniel Munhoz Garcia Perez Neto ◽  
Leonardo Augusto Lopes Muzzi ◽  
Fernando Yoiti Kitamura Kawamoto ◽  
Caio Afonso dos Santos Malta ◽  
Laura Lourenço Freitas ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Femoral Head ◽  
Hip Joint ◽  
Hip Dysplasia ◽  
Weight Bearing ◽  
Clinical Signs ◽  
Radiographic Examination ◽  
Acetabular Coverage ◽  
Hip Joints ◽  
Limb Muscles

Background: Hip dysplasia (HD) is the most common non-traumatic orthopedic disease in large breed dogs. Treatment is chosen according to the severity of the condition, the age of the dog and the involvement of osteoarthritis (OA). For puppies up to 20-weeks-old, surgical treatment by the juvenile pubic symphysiodesis (JPS) technique can be performed. This procedure promotes the ventrolateral rotation of the acetabulum over the femoral head, which improves hip joint congruence and stability. The objective of this study is to report the case of a young dog with HD treated with JPS and pectineus myectomy. Clinical and radiographic outcomes were assessed for up to one year after surgery.Case: A 17-week-old Saint Bernard puppy was attended at the University Veterinary Hospital showing abnormal weight bearing and lameness in pelvic limbs, without history of previous trauma. On orthopedic examination, there was a marked hypotrophy of the pelvic limb muscles, severe pain and laxity in the hip joints, and positive feature in the Ortolani test. The hip joint subluxation angle (SA) and reduction angle (RA) were measured. A radiographic study was carried out to evaluate the hip joints and measure the Norberg angle (NA), distraction index (DI), acetabular angle (AA) and dorsal acetabular rim angle (DARA). The 20-week-old dog underwent surgical treatment by JPS technique. A ventral surgical approach to the pubis was performed and the pubic symphysis was cauterized with electrocautery. Partial pectineus myectomy technique was also performed. Drug therapy and restriction of physical activities were indicated in the early postoperative. The dog was evaluated by clinical and radiographic examinations at 4 months and 1 year after the surgical procedure. In the reassessment after 4 months of surgical treatment, the patient showed improvement in clinical signs, with mild lameness and absence of painful sensitivity in the movement of the hip joints. Radiographically, hip joint incongruity was observed, but with progressive improvement in the values of the measured variables. In the clinical examination 1 year after the procedure, the dog showed satisfactory weight bearing with slight lameness in pelvic limbs in the running gait. There was improvement in the thigh muscles and no painful signs were observed in the hip joints, but a positive result was detected in the Ortolani test. In the radiographic examination, bilateral articular incongruity was still observed, however, there was a mild improvement in the coverage of the acetabulum over the femoral head. The measured angles and indices showed favorable results regarding the recovery of hip joint stability and proper development.Discussion: Studies evaluating the JPS technique for the treatment of HD have shown to be a relatively simple and effective procedure, which allows altering the acetabular coverage, reducing the development of HD and the progression of OA. The need for an early diagnosis of this condition is essential, so that the JPS technique can be used in young dogs and offer effective results. In the present report, in the late postoperative period, the dog showed improvement in clinical signs, with favorable weight bearing and ambulation in pelvic limbs, recovery of limb muscles, absence of pain in the hip joints and decrease in RA and SA. Radiographically, the reduction in joint subluxation, improvement in acetabular coverage over femoral heads, increase in NA and AA, reduction in DI and DARA are evidence of the favorable outcome of ventrolateral rotation of the acetabulum after surgical treatment. The surgical technique used was effective, which enabled the dog to recover the functional use of the pelvic limbs and improve the quality of life.Keywords: hip dysplasia, juvenile pubic symphysiodesis, hip joint, osteoarthritis, dog.Título: Sinfisiodese púbica juvenil associada à miectomia do pectíneopara tratamento de displasia coxofemoral em cãoDescritores: displasia coxofemoral, sinfisiodese púbica juvenil, coxofemoral, osteoartrite.

scholarly journals 3D printing of canine hip dysplasia: anatomic models and radiographs

2020 ◽  
Vol 72 (3) ◽  
pp. 769-777
Author(s):  
R.Y.G. Nunez ◽  
L.K. Albuquerque ◽  
R.C.R. Pereira ◽  
R.P.M. Silva ◽  
P.F. Peruquetti ◽  
...  
Keyword(s):  
Diagnostic Method ◽  
Hip Dysplasia ◽  
Pathological Condition ◽  
3D Models ◽  
Educational Technologies ◽  
Hip Joints ◽  
Anatomic Models ◽  
Severity Of The Disease ◽  
Canine Hip Dysplasia ◽  
Norberg Angle

ABSTRACT Canine Hip Dysplasia (CHD) is a highly prevalent articular pathological condition. In this sense, radiography becomes an important diagnostic method to determine the presence and severity of the disease. The objective was to create 3D models and their respective radiographs representing the CHD (3D AMCHD). The research was carried out in the Laboratory of 3D Educational Technologies of UFAC, under no. 23107.007273/2017-49 (CEUA/UFAC). A canine skeleton (hip bone, femurs and patellae) was used without anatomical deformities compatible with DCF (pelvis, femurs and patella), which were scanned in order to obtain the files of the base model. In these files the deformations representing the different degrees of CHD were performed. Subsequently, the 3D AMCHD files were printed, mounted and X-rayed. The 3D AMCHD represented the bone deformations of the different degrees of CHD. In the radiographs of the 3D AMCHD it was possible to observe and determine each of the bones that constituted the hip joints. This allowed to reproduce the correct positioning to represent the CHD diagnosis and establish the precise points to determine the Norberg angle. In this way, it was evidenced that the 3D AMCHD can be a possible tool to be used in the Teaching of Veterinary Medicine.

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