Hip joint mechanics during walking in individuals with mild-to-moderate hip osteoarthritis

2017 ◽  
Vol 53 ◽  
pp. 162-167 ◽  
Author(s):  
Maria Constantinou ◽  
Aderson Loureiro ◽  
Christopher Carty ◽  
Peter Mills ◽  
Rod Barrett
Keyword(s):  
Hip Joint ◽  
Hip Osteoarthritis ◽  
Joint Mechanics

scholarly journals Development and Validation of a Finite Element Model of the Pelvis

2003 ◽  
Author(s):  
Andrew E. Anderson ◽  
Christopher L. Peters ◽  
Benjamin D. Tuttle ◽  
Jeffrey A. Weiss
Keyword(s):  
Finite Element ◽  
Cortical Thickness ◽  
Hip Joint ◽  
Material Properties ◽  
Hip Osteoarthritis ◽  
Bone Geometry ◽  
Diagnostic Methods ◽  
Fe Model ◽  
Joint Mechanics ◽  
Subject Specific

An improved understanding of the stress distribution in and around the hip joint may provide important information regarding the relationship between altered pelvic and acetabular geometry and development of hip osteoarthritis, as well as point to improved diagnostic methods and analysis of surgical treatment. It is very difficult to accurately assess how changes in pelvic geometry affect the stress and strain distribution of the joint in an experimental setting. The finite element (FE) method provides an alternative approach for study of hip joint mechanics. Although FE models of the pelvis have been developed, validation by direct comparison with subject-specific experimental measurements has not been performed. In addition, previous models have utilized over-simplified bone geometry and homogeneous material properties. The objectives of this study were to 1) develop and validate a FE model of the pelvis using subject-specific measurements of bone geometry as well as location-dependent cortical thickness and trabecular bone elastic modulus, and 2) assess the sensitivity of the subject-specific FE model to changes in material properties and cortical thickness.

scholarly journals Total Hip Arthroplasty for the Paralytic and Non-paralytic Side in Patient with Residual Poliomyelitis

2016 ◽  
Vol 10 (1) ◽  
pp. 105-110 ◽  
Author(s):  
Motoki Sonohata ◽  
Masaru Kitajima ◽  
Shunsuke Kawano ◽  
Masaaki Mawatari
Keyword(s):  
Muscle Strength ◽  
Total Hip Arthroplasty ◽  
Hip Joint ◽  
Hip Arthroplasty ◽  
Muscle Tone ◽  
Hip Osteoarthritis ◽  
Hip Pain ◽  
Total Hip ◽  
Early Results ◽  
History Of

Background: Total hip arthroplasty (THA) for poliomyelitis is a problematic procedure due to difficulty in positioning the cup of the prosthesis in the true acetabulum and the risk of dislocation after THA due to the low muscle tone. Methods: We herein present a case of bilateral hip pain with a history of poliomyelitis. Radiograph showed bilateral hip osteoarthritis caused by hip dysplasia due to residual poliomyelitis in right hip joint or developing dysplasia of the hip joint in left hip joint. THA was performed to bilateral hip joints. Results: Six years after bilateral THA, bilateral hip pain significantly improved. Additionally, the muscle strength on the paralyzed right side partially improved. However, the muscle strength on the non-paralyzed left side did not significantly improve. No complications related to the surgery were observed. Conclusion: Promising early results were obtained for THA in our patient with residual poliomyelitis. However, surgeons should pay attention to the potential development of complications concerning THA that may arise due to the residual poliomyelitis.

scholarly journals Relationship between hip joint proximity area and sagittal balance parameters: an upright computed tomography study

2020 ◽  
Author(s):  
Shunsuke Kikuchi ◽  
Daisuke Nakashima ◽  
Yoshitake Yamada ◽  
Minoru Yamada ◽  
Yoichi Yokoyama ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Hip Joint ◽  
Sagittal Balance ◽  
Dimensional Space ◽  
Hip Osteoarthritis ◽  
Sacral Slope ◽  
Sagittal Vertical Axis ◽  
Spinal Balance ◽  
Offset Distance ◽  
Sagittal Spinal Alignment

Abstract Purpose A close relationship between sagittal spinal alignment and hip osteoarthritis (OA) has been documented. This study aimed to examine the relationship between hip joint proximity area and sagittal balance parameters in healthy subjects. Methods This prospective study enrolled 47 healthy volunteers who underwent 320-detector row upright computed tomography. Acquired data were reconstructed in a virtual three-dimensional space. The proximity area was determined by < 1 mm of the Hausdorff distance between the acetabulum and the femoral head. Volunteers were divided into the anterior and posterior proximity groups depending on the position of the closest area. Sagittal balance parameters [sagittal vertical axis (SVA), T1 spinopelvic inclination (T1-SPi), T1-pelvic angle, pelvic tilt, sacral slope, pelvic incidence, lumbar lordosis, thoracic kyphosis), offset distance between the centre of the acoustic meati (CAM) and C7 plumb line (CAM-C7-offset), and offset distance between the CAM and hip axis (HA) (CAM-HA-offset)] were compared between the two groups using independent sample t test. Results The anterior proximity group (n = 24) had higher SVA (p = 0.016) and T1-Spi (p = 0.015) than the posterior proximity group (n = 23). CAM-HA-offset was higher in the posterior than in the anterior proximity group (p < 0.000). There was no difference in other parameters (p > 0.05). Conclusion The anterior proximity group had a positive anterior spinal balance; the posterior proximity group may have a more posterior gravity line than the hip joint centre. The anterior spinal balance may contribute to the anterior loading of the hip joint, with known relation with the initiation and onset of hip OA.

Analysis of Outcomes of Total Cementless Hip Joint Arthroplasty in the Treatment of Advanced Hip Osteoarthritis Following Childhood Perthes’ Disease

2020 ◽  
Vol 22 (5) ◽  
pp. 333-342
Author(s):  
Marek Drobniewski ◽  
Magdalena Krasińska ◽  
Andrzej Grzegorzewski ◽  
Marek Synder ◽  
Andrzej Borowski
Keyword(s):  
Hip Joint ◽  
Hip Osteoarthritis ◽  
Joint Arthroplasty ◽  
Perthes Disease ◽  
Acetabular Cup ◽  
Kaplan Meier ◽  
Long Term Follow Up ◽  
The Mean ◽  
Joint Arthroplasties

Background. The aim of this study is to analyse the outcomes of total cementless hip joint arthroplasty in the treatment of advanced hip osteoarthritis following Perthes’ disease in childhood. Material and methods. The study enrolled 56 patients (15 women and 41 men) who underwent a total of 61 hip joint arthroplasties for coxarthrosis following Perthes’ disease. The mean age of the patients at surgery was 46.7 years (range 21-67 years). The mean follow-up period was 13.7 years. Results. Pre-operative Merle d’Aubigne-Postel scores (modified by Charnley) of the study group were poor in all patients. Mean post-operative improvement was 6.7 points. The outcomes were classified as excellent in 25 cases, good in 16, satisfactory in 16 and poor in 9 cases. Poor results were always related to loosening of the acetabular cup. Heterotopic ossification was noted in 7 cases. According to the Kaplan-Meier estimator, 10 years’ survival probability was 85.24% for the whole implant and 100% for the stem. Conclusions. 1. Total cementless hip joint arthroplasty is an effective method in the treatment of advanced hip osteoarthritis following Perthes’ disease in childhood. 2. With good surgical technique and in the absence of complications, the risk of aseptic loosening is minimal. 3. Due to the patients’ young age, there may be more cases of loosening over time, requiring regular long-term follow-up.

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