Evaluation of acetabular coverage of the femoral head with anteroposterior and false profile radiographs of hip joint

1997 ◽  
Vol 2 (6) ◽  
pp. 378-390 ◽  
Author(s):  
Etsuo Chosa ◽  
Naoya Tajima ◽  
Yoshitaka Nagatsuru
Keyword(s):  
Femoral Head ◽  
Hip Joint ◽  
Acetabular Coverage

scholarly journals Lengthening of the Normal Tibia in a Patient with Hemihypertrophy Caused by Klippel-Trenaunay-Weber Syndrome: A Case Report

2011 ◽  
Vol 19 (3) ◽  
pp. 359-363 ◽  
Author(s):  
Munetomo Takata ◽  
Koji Watanabe ◽  
Hidenori Matsubara ◽  
Kei Takato ◽  
Issei Nomura ◽  
...  
Keyword(s):  
Case Report ◽  
Femoral Head ◽  
Hip Joint ◽  
Acetabular Coverage ◽  
Leg Length ◽  
Coverage Ratio ◽  
Edge Angle ◽  
Centre Edge Angle ◽  
Weber Syndrome ◽  
Contralateral Tibia

We report a case of Klippel-Trenaunay-Weber syndrome in a 31-year-old woman who presented with hypertrophy of the left leg. She had severe osteoarthritic changes in the left hip joint secondary to the lack of acetabular coverage of the femoral head as the result of lateral inclination of the pelvis owing to leg-length discrepancy of 4 cm. The centre-edge angle (coverage ratio of the acetabulum to the femoral head) was improved from 15° to 33° after a foot lift. She underwent osteotomy and lengthening of the normal contralateral tibia using a Taylor spatial frame. Hip arthroplasty could be avoided as osteoarthritic changes of the hip joint had improved.

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.

Optimal parameters of abrasive flow finishing for hip joint implants

2021 ◽  
pp. 095440542199561
Author(s):  
Yahya Choopani ◽  
Mohsen Khajehzadeh ◽  
Mohammad Reza Razfar
Keyword(s):  
Surface Roughness ◽  
Standard Deviation ◽  
Femoral Head ◽  
Hip Joint ◽  
Spherical Shape ◽  
Shape Deviation ◽  
Head Surface ◽  
Joint Implants ◽  
Finishing Processes ◽  
Abrasive Flow Finishing

Total hip arthroplasty (THA) is one of the most well-known orthopedic surgeries in the world which involves the substitution of the natural hip joint by prostheses. In this process, the surface roughness of the femoral head plays a pivotal role in the performance of hip joint implants. In this regard, the nano-finishing of the femoral head of the hip joint implants to achieve a uniform surface roughness with the lowest standard deviation is a major challenge in the conventional and advanced finishing processes. In the present study, the inverse replica fixture technique was used for automatic finishing in the abrasive flow finishing (AFF) process. For this aim, an experimental setup of the AFF process was designed and fabricated. After the tests, experimental data were modeled and optimized to achieve the minimum surface roughness in the ASTM F138 (SS 316L) femoral head of the hip joint through the use of response surface methodology (RSM). The results confirmed uniform surface roughness up to the range of 0.0203 µm with a minimum standard deviation of 0.00224 for the femoral head. Moreover, the spherical shape deviation of the femoral head was achieved in the range of 7 µm. The RSM results showed a 99.71% improvement in the femoral head surface roughness (0.0007) µm under the optimized condition involving the extrusion pressure of 9.10 MPa, the number of finishing cycles of 95, and SiC abrasive mesh number of 1000.

scholarly journals Microvascular Density of Rapidly Destructive Arthropathy of the Hip Joint

2005 ◽  
Vol 13 (1) ◽  
pp. 40-45 ◽  
Author(s):  
T Yamakawa ◽  
A Sudo ◽  
M Tanaka ◽  
A Uchida
Keyword(s):  
Femoral Head ◽  
Hip Joint ◽  
Joint Destruction ◽  
Bone Destruction ◽  
Microvascular Density ◽  
Blood Capillaries ◽  
Secondary Osteoarthritis ◽  
Femoral Heads ◽  
Formalin Fixed Paraffin Embedded ◽  
Destructive Arthropathy

Purpose. To assess the vascularity of the femoral head and determine how it is related to the destruction of the arthritic hip joint. The process of destructive arthropathy in arthritic hip joints is variable. Some patients with osteoarthritis of the hip have rapidly progressive destructive changes resulting in the disappearance of the femoral head. Method. Six femoral heads from patients diagnosed with rapidly destructive arthropathy and 6 femoral heads from patients with secondary osteoarthritis caused by acetabular dysplasia were analysed to reveal the association between blood capillaries and osteoclasts. The von Willebrand Factor immunostaining and counterstaining with Mayer's haematoxylin were used to label the microvessels and osteoclasts in formalin-fixed, paraffin-embedded specimens of femoral heads. The numbers of immunostained microvessels and osteoclasts in selected regions were counted. Result. The microvascular density of the bone surfaces of rapidly progressive arthritic hips was hypervascular. Osteoclasts were also found in increased numbers on the bone surfaces of rapidly progressive arthritic hips. The higher microvascular density coincided with extensive bone destruction and with the increased osteoclast count. Conclusion. These findings suggested that hypervascularity of the granulation in the femoral head may be associated with bone and joint destruction.

A method for visualizing the dorsal acetabular rim and the coverage of the femoral head

2001 ◽  
Vol 14 (03) ◽  
pp. 151-155 ◽  
Author(s):  
J. Hoskinson ◽  
W. C. Renberg
Keyword(s):  
Femoral Head ◽  
Hip Joint ◽  
Prognostic Value ◽  
Degenerative Change ◽  
Femoral Shaft ◽  
Normal Activity ◽  
Degenerative Joint Disease ◽  
Joint Disease ◽  
Anatomical Landmarks ◽  
Acetabular Rim

SummaryThe authors describe a new technique to visualize the dorsal acetabular rim and the coverage of the femoral head in the nonsedated dog. The technique involves using an overhead beam, directed at an angle tangential to the dorsal rim of the acetabulum, with a film positioned caudal to the standing dog. Anatomical landmarks that can routinely be identified include: the ilial crest, ilial shaft, ischial tuberosity, acetabulum, acetabular rim (particularly the dorsocaudal component), femoral head, greater trochanter, femoral neck, femoral shaft, rectum and the tail. Because the animal is standing and is not sedated, the technique may have additional value as a means of evaluating subluxation of the hip joint. It maintains a posture as close as possible to that experienced by the animal in normal activity. If the technique has prognostic value in that regard, more investigation is needed, but it is useful in itself as a technique to visualize the area of the acetabulum.A new radiographic technique to evaluate the canine hip joint is described. The view involves tangential projection of the acetabulum in the standing, awake dog. Nineteen dogs have been radiographed to develop the technique and the method has been found to be technically simple and consistent. It allows examination of the dorsal acetabular rim and may help examine the amount of subluxation of the hip as well as the presence of any degenerative joint disease. The authors advocate additional study to determine the technique’s prognostic value in predicting degenerative change associated with hip dysplasia.

scholarly journals Pathohistologic Changes in Hip Tissues and Clinical-Morphologic Correlations in Diseases Complicated by Femoroacetabular Impingement Syndrome

2014 ◽  
Vol 21 (2) ◽  
pp. 67-73
Author(s):  
V. V Grigorovskiy ◽  
V. V Filipchuk ◽  
M. S Kabatsiy
Keyword(s):  
Femoral Head ◽  
Femoroacetabular Impingement ◽  
Hip Joint ◽  
Comparison Study ◽  
Acetabular Labrum ◽  
Aseptic Necrosis ◽  
Association Coefficient ◽  
Absolute Value ◽  
Femoroacetabular Impingement Syndrome ◽  
Fai Syndrome

The purpose of the work was to detect clinical-morphologic correlative dependences in patients with clinically marked femoroacetabular impingement (FAI) syndrome basing on the study of pathomorphologic changes in hip joint tissues, semiquantitative quantification of pathologic changes intensity, frequency analysis of their occurrence in nosologic groups of comparison. Study was performed on specimens of hip joint tissues - femoral head, acetabulum, acetabular labrum and joint capsule, resected during indicated corrective surgeries for femoral head aseptic necrosis and juvenile epiphysiolysis. Clinical-morphologic study revealed various pathologic changes: dystrophic-destructive, ischemic-necrotic and productive-inflammatory. In patients with FAI syndrome clinical and morphologic correlative dependences varied by absolute value, sign and degree of reliability of association coefficient parameters, i.e. groups of patients with certain nosologic units retained the peculiarities of rate and characteristics proportions in correlative dependences

scholarly journals Algorithm for Early Diagnosis and Treatment Tactics of Diseases Accompanied by Coxalgia in Children

2009 ◽  
Vol 16 (2) ◽  
pp. 67-71
Author(s):  
Il'ya L'vovich Lobov ◽  
S E Kul'banskaya ◽  
M A Uronova ◽  
I L Lobov ◽  
S E Kulbanskaya ◽  
...  
Keyword(s):  
Drug Therapy ◽  
Femoral Head ◽  
Early Diagnosis ◽  
Hip Joint ◽  
Blood Circulation ◽  
Perthes Disease ◽  
Diagnosis And Treatment ◽  
Joint Diseases

Examination and treatment of 524 children with coxalgia has been performed. Algorithm for early diagnosis of various hip joint diseases accompanied by coxalgia has been elaborated. The factors causing hip joint response resulting in different pathology including Leg-Calve-Perthes disease have been determined. In the majority of cases application of modified splint in combination with drug therapy enabled to normalize blood circulation in the affected joint and prevent the development of secondary deformities of the femoral head.

scholarly journals Assessment of Acetabulum Deformity During Preoperative Planning for Hip Arthroplasty

2019 ◽  
Vol 25 (3) ◽  
pp. 153-164
Author(s):  
D. V. Martynenko ◽  
V. P. Voloshin ◽  
L. A. Sherman ◽  
K. V. Shevyrev ◽  
S. A. Oshkukov ◽  
...  
Keyword(s):  
Acetabular Component ◽  
Hip Joint ◽  
Preoperative Planning ◽  
Bone Defects ◽  
Lateral Side ◽  
X Rays ◽  
Two Dimensional ◽  
Acetabular Coverage ◽  
Anatomical Features ◽  
Medial Side

Purpose of the study — to improve the two-dimensional planning of total hip joint arthroplasty to ensure precise positioning of the acetabular component in the deformed acetabulum. Materials and methods. Features of roentgenological anatomy of acetabulum and its coverage were studied on 1058 hip joint x-rays in the AP view in accordance with the procedure developed by the authors to define acetabular square — the site of standard positioning of a spherical femoral head in the acetabulum or of a hemispherical acetabular component. The method consisted of identifying the apex of “teardrop” figure; the most lateral points of the pelvic terminal line and roof of the acetabulum; superior part of the acetabular cavity; medial and inferior points of acetabular coverage, and building the sides of acetabular square — medial, inferior, lateral and superior boundary lines. Connection of “teardrop” apex and lateral point of the pelvic terminal line formed the medial side of acetabular square, and a perpendicular to that line drawn through the “teardrop” apex to its inferior side. The lateral side was drawn either through the intersection of the ascending diagonal line — bisector from the top of the “teardrop” figure with the contour of the acetabulum roof, or was a part of the projection of the most lateral point of the acetabular roof on the inferior side of the square. The superior side was a perpendicular connecting the intersection of the ascending diagonal and lateral bounding lines with the medial side of the acetabular square. The area of the deformed acetabular cavity located outside of the acetabular square was assessed as the acetabular defect. Results. Method of defining the acetabular square allowed to identify types of ratios between acetabular cavity and acetabular coverage in transverse (9 types) and longitudinal (7 types) direction. Combination of transverse ratio of acetabular cavity and coverage with longitudinal type allowed to define the options of acetabular deformities in two-dimensional view. The authors identified 25 types of acetabular deformities. Bone defects of acetabular walls were of the major importance among all anatomical features. Cranial defect of acetabulum was observed in 450 cases, medial wall defect — in 38 cases, defect including cranial and medial areas — in 7 cases. Conclusion. The method suggested by the authors to determine acetabular square and acetabular deformity variations allows to screen the anatomical features of the acetabulum during two-dimensional preoperative planning and to make an informed decision on the need to use other planning techniques. The type of acetabular deformity identified during preoperative planning allows to elaborate the indications for replacement of acetabular bone defects and/or resection of acetabular osteophytes.

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