Differences of the Curvature Radius and the Curvature Center between Acetabulum and Femoral Head in Dysplastic Hip Joint

Abstract Background: Residual hip dysplasia is one of the factors contributing to early hip joint osteoarthritis. The main problems caused by residual dysplasia are pain and instability of the hip joint caused by the lack of sufficient bony covering of the femoral head. The aim of this work was to radiologically assess the configuration change of a dysplastic hip joint after surgical treatment using the Bernese periacetabular osteotomy procedure.Methods: We assessed the radiological parameters of patients with hip dysplasia treated by Bernense periacetabular osteotomy by performing a digital antero-posterior pelvis X-ray: central edge angle and femoral head coverage, medialization, distalization and ilio-ischial angle parameters. For normally distributed parameters, we used Student’s t-test; for parameters without a normal distribution, we used the Wilcoxon signed-rank test. Correlations were assessed according to a normal distribution using the Pearson and Spearman method.Results: For all parameters, we observed statistically significant differences in the measurements of dysplastic hip joints before and after the surgery. We also observed a statistically significant difference between the structure of dysplastic hip joints prior to the surgery and healthy hip joints from the control group based on all radiological parameters. The resulting medialization was 2.68 mm, distalization was 3.65 mm, and the ilio-ischial angle was changed by 2.62°. There was also an improvement in the femoral head bony covering: CEA by 17.61° and FHC by 16.46%.Conclusions: Based on all the radiological parameters, we presented the difference between healthy and dysplastic hip joints. Learning the parameter values that are used to describe dysplastic hip joints will allow us to improve the imaging of the condition and will also allow for better planning and proper qualification of patients for surgical treatment of hip joint dysplasia.Trial registration: Consent of the bioethics commission Medical Centre of Postgraduate Education 83/PB/2015 18.11.2015 Warsaw

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The Dysplastic Hip Joint: Radiologic and Histologic Development

Veterinary Pathology ◽

10.1177/030098587501200405 ◽

1975 ◽

Vol 12 (4) ◽

pp. 279-305 ◽

Cited By ~ 9

Keyword(s):

Femoral Head ◽

Hip Joint ◽

Growth And Development ◽

Hip Dysplasia ◽

Normal Rate ◽

Mild Dysplasia ◽

Pelvic Bones ◽

Dysplastic Hip

The pelvic growth in dogs that developed hip dysplasia was followed radiographically, grossly, and histologically from birth to maturity to obtain clues to the earliest signs of the disease. The growth and development in the length and diameter of the pelvic bones and femurs were at a normal rate in the dysplastic dog. The bony malformations were confined to the hip joint, except for minor adjustments in shape. In the dogs described, hip dysplasia became severe. There was no recognizable evidence of the disease until the 7th week, at which time the femoral head became unstable and subluxated from the cavity of the acetabulum. In other less severe instances (mild dysplasia), the femoral head subluxation usually was not evident until the 5th–6th month of age. In even milder cases, the dogs were 12–14 months of age before hip dysplasia was apparent radiographically. The degree of the maldevelopment depended on the extent of femoral head and acetabular separation and the age of the dog when congruity was interrupted by subluxation.

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Early MRI findings of the acetabulum and femoral head in a dysplastic hip resulting in a rapid destruction of the hip joint

Archives of Orthopaedic and Trauma Surgery ◽

10.1007/s00402-005-0053-x ◽

2005 ◽

Vol 125 (8) ◽

pp. 567-570 ◽

Cited By ~ 3

Author(s):

Kenjiro Nishida ◽

Takuaki Yamamoto ◽

Goro Motomura ◽

Toshihide Shuto ◽

Yasuharu Nakashima ◽

...

Keyword(s):

Femoral Head ◽

Hip Joint ◽

Mri Findings ◽

Rapid Destruction ◽

Dysplastic Hip

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Optimal parameters of abrasive flow finishing for hip joint implants

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1177/0954405421995614 ◽

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.

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Clinical effects of direct anterior internal fixation with Herbert screws on hip joint function and quality of life in patients with Pipkin II femoral head fractures

Archives of Orthopaedic and Trauma Surgery ◽

10.1007/s00402-021-03973-2 ◽

2021 ◽

Author(s):

Zhibo Sun ◽

Liangbo Jiang ◽

Rong Chen ◽

Lin Zhao ◽

Xiangwei Li

Keyword(s):

Quality Of Life ◽

Femoral Head ◽

Internal Fixation ◽

Hip Joint ◽

Clinical Effects ◽

Joint Function

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Microvascular Density of Rapidly Destructive Arthropathy of the Hip Joint

Journal of Orthopaedic Surgery ◽

10.1177/230949900501300107 ◽

2005 ◽

Vol 13 (1) ◽

pp. 40-45 ◽

Cited By ~ 10

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.

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

Veterinary and Comparative Orthopaedics and Traumatology ◽

10.1055/s-0038-1632690 ◽

2001 ◽

Vol 14 (03) ◽

pp. 151-155 ◽

Cited By ~ 3

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.

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

N.N. Priorov Journal of Traumatology and Orthopedics ◽

10.17816/vto20140267-73 ◽

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

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

N.N. Priorov Journal of Traumatology and Orthopedics ◽

10.17816/vto200916267-71 ◽

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.

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