Hip Anatomy and Biomechanics

2022 ◽  
pp. 113-130
Author(s):  
Elise B.E. Raney ◽  
Andrea M. Spiker
Keyword(s):  
Hip Anatomy

scholarly journals Prediction of time to prosthesis implantation as a function of joint anatomy in patients with developmental dysplasia of the hip

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Michael Müller ◽  
Anasthasia Rakow ◽  
Georgi I. Wassilew ◽  
Tobias Winkler ◽  
Carsten Perka
Keyword(s):  
Early Stage ◽  
Treatment Options ◽  
Developmental Dysplasia ◽  
Prosthesis Implantation ◽  
Secondary Osteoarthritis ◽  
Time Of Surgery ◽  
Hip Anatomy ◽  
The Mean ◽  
The Relationship ◽  
Dysplasia Of The Hip

Abstract Background Developmental dysplasia of the hip (DDH) can lead to pain and premature secondary osteoarthritis at an early stage. Joint-preserving osteotomy is an established solution to this problem. In contrast, a conservative approach would result in pain persistence, ultimately raising the patients question for a possible date of expected prosthesis implantation. The aim of the study was to identify the relationship between the dysplastic hip anatomy and the time of prosthesis implantation in order to enable prognostic predictions in younger patients with symptomatic DDH. Materials and methods Data from 129 hips who received THA due to secondary DDH osteoarthritis were evaluated. The preoperative hip anatomy was evaluated for AI and LCE angle. Multiple linear regression analyses were then used to correlate the influence of these parameters with the patient’s age at the time of surgery. In addition, a graphical relationship was derived by the method of power least squares curve fitting with second-degree polynomials. Results The mean age for THA was 54.3 ± 11 years. The time of surgery correlated significantly with LCE (0.37) and AI (− 0.3) (p < 0.001). The mean age of patients with LCE angle ≤ 10° was 41.9 ± 14.0 years, for LCE 11–20° 52.7 ± 9.5 years, and for LCE 21–30° 57.0 ± 10.3 years. The following formula could then be determined for the calculation of the potential patient age at the time of THA as a function of LCE angle: age pTHA = 40.2 + 0.8 × LCE angle − 0.01 × (LCE angle)2. Conclusion A significant correlation between the extent of dysplasia and the time of prosthesis implantation was identified. In particular, the LCE and the AI correlated strongly with the time of implantation. The more dysplastic the angles were, the sooner the THA was necessary. Using the calculations presented in this study, the probable age of prosthesis implantation can be prognosticated and included in a counseling session about treatment options for DDH.

Can Hip Anatomy Be Reconstructed With Femoral Components Having Only One Neck Morphology? A Study on 466 Hips

2013 ◽  
Vol 28 (7) ◽  
pp. 1185-1191 ◽  
Author(s):  
Philippe Piriou ◽  
Hervé Bugyan ◽  
Dominique Casalonga ◽  
Emmanuel Lizée ◽  
Christophe Trojani ◽  
...  
Keyword(s):  
Hip Anatomy

scholarly journals The Influence of Body Mass Index and Hip Anatomy on Direct Anterior Approach Total Hip Replacement

2016 ◽  
Vol 25 (6) ◽  
pp. 555-560 ◽  
Author(s):  
Weilin Sang ◽  
Libo Zhu ◽  
Jinzhong Ma ◽  
Haiming Lu ◽  
Cong Wang
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Anterior Approach ◽  
Direct Anterior Approach ◽  
Total Hip ◽  
Hip Anatomy

scholarly journals Hip: Anatomy and US technique

2011 ◽  
Vol 14 (2) ◽  
pp. 99-108 ◽  
Author(s):  
L. Molini ◽  
M. Precerutti ◽  
A. Gervasio ◽  
F. Draghi ◽  
S. Bianchi
Keyword(s):  
Hip Anatomy

scholarly journals Comparative Analysis of the Reconstruction of Individual Hip Anatomy Using 3 Different Cementless Stem Designs in Patients With Primary Hip Osteoarthritis

2018 ◽  
Vol 33 (4) ◽  
pp. 1126-1132 ◽  
Author(s):  
Moritz M. Innmann ◽  
Katrin Spier ◽  
Marcus R. Streit ◽  
Peter R. Aldinger ◽  
Thomas Bruckner ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Hip Osteoarthritis ◽  
Cementless Stem ◽  
Hip Anatomy

scholarly journals Positioning of custommade acetabular components at revision hip arthroplasty: do they really match as “a key and a lock”?

2017 ◽  
Vol 24 (4) ◽  
pp. 31-37
Author(s):  
Anton N. Kovalenko ◽  
R. M Tikhilov ◽  
S. S Bilyk ◽  
I. I Shubnyakov ◽  
M. A Cherkasov ◽  
...  
Keyword(s):  
Revision Arthroplasty ◽  
Spatial Location ◽  
Early Postoperative Period ◽  
Long Term Results ◽  
Lateral Direction ◽  
Rotation Center ◽  
Hip Anatomy ◽  
Custom Made ◽  
Preoperative Plan

Purposes are to determine 1) what frequency and what degree is of custom acetabular implants malposition in comparison with planned position, 2) what the reason of malposition is and 3) what the malposition consequences we can wait for. Patients and methods. The observation group included 20 patients (18 women and 2 men) with severe acetabular defects. Mean age of patients made up 53 (22-72) years. Position of the implants was compared with the parameters of preoperative planning using 5 postoperative CT indices (inclination, anteversion of semi- spherical part of the implant, spatial location of the rotation center in three axes). More than 10° deviation for inclination or anteversion and 5° dislocation of the rotation center in any axis was considered as a malposition of the component. Results. Only 5 of 20 constructions matched conditionally permissible limits by all the parameters. Most often excessive dislocation of the rotation center in lateral direction (10 cases) and excessive anteversion (9 cases) were observed. During 6 weeks follow up no complications related to the acetabular component position were recorded. Conclusion. It was shown that at revision arthroplasty with custom-made implants the probability of implant malposition as compared to the preoperative plan. The main reason could be the complexity of intraoperative orientation under conditions of abnormal hip anatomy. Malposition of the implants beyond the stated values did not result in complications within the early postoperative period. The longer follow up is required for the assessment of the long-term results.

scholarly journals The Use of Tinkertoys® for Teaching Hip Anatomy and Alignment

2020 ◽  
Author(s):  
Deborah Wendland
Keyword(s):  
Spatial Ability ◽  
Repeated Measures ◽  
Spatial Abilities ◽  
Pelvic Bone ◽  
Traditional Lecture ◽  
Femoral Torsion ◽  
Hip Anatomy ◽  
Post Test ◽  
Class Period ◽  
Simultaneous Model

Background: Health education can require an emphasis on potentially difficult concepts in anatomy and alignment. Purpose: The purpose of this study is to describe the effect of active use of Tinkertoys® to promote understanding of alignment and to report its effectiveness for knowledge acquisition among students according to spatial ability. Methods: Two cohorts of physical therapy (PT) students (n=70) participated in this project over two years. Thirty-four students (second cohort) rated their math and spatial abilities on a survey. Following a traditional lecture on femoral torsion and angle of inclination, all participants took a pre-test. Then, a Tinkertoys® model of the lower limb was used along with a pelvic bone to simulate the hip anatomy and alignment. Only students in the second cohort received the opportunity to simultaneously manipulate similar models at their desks. At the end of the class period, a post-test was given. Four days later, a similar quiz was given. Descriptive statistics and repeated measures with pairwise comparisons were used to analyze the data. Results: Quiz means improved from pre-test (32.1%) to post-test (74.6%, p=0.023). Differences were not evident between people who self-reported stronger versus weaker spatial abilities (p=0.186). Conclusions: Tinkertoys® model use, with or without simultaneous model manipulation, facilitated learning, regardless of self-reported spatial ability.

scholarly journals An Evaluation of Sensing Technologies to Measure Intraoperative Leg Length for Total Hip Arthroplasty

2020 ◽  
Author(s):  
Akash Chaurasia ◽  
Jerry Yan ◽  
Robert Li ◽  
Katie McCarren ◽  
Claire State ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
High Volume ◽  
Limb Length Discrepancy ◽  
Qualitative Assessment ◽  
Leg Length ◽  
Total Hip ◽  
Hip Anatomy ◽  
Orthopedic Surgeons ◽  
Implant Selection

Abstract Total hip arthroplasty (THA) procedures have been identified as high-volume procedures with growing prevalence. During the procedure, orthopedic surgeons largely rely solely on qualitative assessment to ensure an excessive limb length discrepancy (LLD) is not introduced from the implant selection. LLD can result in back pain and gait complications, with some cases of LLD requiring a revision procedure to mitigate. To address this issue, we evaluated several methods of sensing distance intraoperatively to determine the best approach to measure leg length during the THA procedure. A testing setup using a sawbones model of hip anatomy in the decubitus position was used as a simulation of the THA procedure to test the accuracy of each of the sensing modalities.

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