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https://www.readbyqxmd.com/read/28316959/comparative-study-of-peripheral-rim-fixation-using-jumbo-cup-in-revisional-hip-arthroplasty
#1
Woo-Lam Jo, Young-Wook Lim, Jin-Hyung Im, Seung-Chan Kim, Soon-Yong Kwon, Yong-Sik Kim
PURPOSE: It is challenging procedure to revise acetabular component in acetabulum with severe bone defect or deformity. The jumbo cup is good option for revisional arthroplasty in large bone defect. The purpose of this study is to compare the prognosis of revisional total hip arthroplasty using jumbo cup with peripheral rim fixation and no rim fixation. MATERIALS AND METHODS: We included the patients who had performed acetabular revisional total hip arthroplasty from January 2002 to March 2015 in our institute...
March 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28314887/mechanical-strains-passing-through-the-acetabular-labrum-modify-its-shape-during-hip-motion-an-anatomical-study
#2
Matthieu Ollivier, Thomas Le Corroller, Sebastien Parratte, Patrick Chabrand, Jean-Noël Argenson, Olivier Gagey
PURPOSE: The function of the hip labrum during hip motion remains poorly known. Our hypothesis was that acetabular labrum will deform and change its shape during adduction to abduction movement consecutively to variation of strains passing from the acetabulum to the femoral head. An ex vivo anatomical study was conducted to analyse the morphological parameters variation of the mid-portion of the labrum (length, thickness, shape, deformation) as well as femoro-labral strains during hip adduction to abduction movement...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28300706/tapered-stems-one-third-proximally-coated-have-higher-complication-rates-than-cylindrical-two-third-coated-stems-in-patients-with-high-hip-dislocation-undergoing-total-hip-arthroplasty-with-step-cut-shortening-osteotomy
#3
Vahit Emre Ozden, Goksel Dikmen, Burak Beksac, Ismail Remzi Tozun
BACKGROUND: The results of cementless stems in total hip arthroplasty (THA) done because of congenital dislocation with step-cut osteotomy is not well known, particularly the influence of the design and the role of extent of porous coating. Therefore we performed a retrospective study to evaluate the mid to long-term results THA performed with a single type acetabular component and different geometry and fixation type stems with ceramic bearings in the setting of step-cut subtrochanteric osteotomy in high hip dislocated (HHD) patients...
March 11, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28300359/influence-of-different-boundary-conditions-in-finite-element-analysis-on-pelvic-biomechanical-load-transmission
#4
Pan Hu, Tao Wu, Hui-Zhi Wang, Xin-Zheng Qi, Jie Yao, Xiao-Dong Cheng, Wei Chen, Ying-Ze Zhang
OBJECTIVE: To observe the effects of boundary conditions and connect conditions on biomechanics predictions in finite element (FE) pelvic models. METHODS: Three FE pelvic models were constructed to analyze the effect of boundary conditions and connect conditions in the hip joint: an intact pelvic model assumed contact of the hip joint on both sides (Model I); and a pelvic model assumed the hip joint connecting surfaces fused together with (Model II) or without proximal femurs (Model III)...
March 16, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28297184/the-human-pelvis-variation-in-structure-and-function-during-gait
#5
Cara L Lewis, Natalie M Laudicina, Anne Khuu, Kari L Loverro
The shift to habitual bipedalism 4-6 million years ago in the hominin lineage created a morphologically and functionally different human pelvis compared to our closest living relatives, the chimpanzees. Evolutionary changes to the shape of the pelvis were necessary for the transition to habitual bipedalism in humans. These changes in the bony anatomy resulted in an altered role of muscle function, influencing bipedal gait. Additionally, there are normal sex-specific variations in the pelvis as well as abnormal variations in the acetabulum...
April 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28295578/measurement-of-acetabular-version-based-on-biplanar-radiographs-with-3d-reconstructions-in-comparison-to-ct-as-reference-standard-in-cadavers
#6
Christoph A Agten, Maciej Jonczy, Oliver Ullrich, Christian W A Pfirrmann, Reto Sutter, Florian M Buck
INTRODUCTION: To quantify acetabular version using 3D reconstructions based on biplanar radiographs (BPR) with CT as reference standard. MATERIALS AND METHODS: No institutional review board approval was needed. Nine dry-bone pelvises underwent BPR in five different positions (rotation/tilt). 3D models of each pelvis were reconstructed by two radiologists on the basis of anatomical landmarks using semi-automated software. Automated software was used to assess the 3D models and to calculate acetabular versions perpendicular to the anterior pelvic plane on all levels in the craniocaudal direction in 1mm steps...
March 13, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28295127/the-crush-index-orthopedic-trauma-as-an-economic-indicator
#7
Armin Arshi, Justin H Barad, Riki K Patel, J Ben Allis, Nelson F Soohoo, Eric E Johnson
The purpose of this study was to evaluate the relationship between economic activity and the incidence of high-energy orthopedic trauma. California's Office of Statewide Health Planning and Development patient discharge database was queried to identify monthly orthopedic trauma incidence from 1995 to 2010. Patient inclusion required 1 diagnosis code and 1 associated procedural code for fractures of the femur, tibia, ankle, pelvis, or acetabulum. Data on composite market indices, energy and transportation use, and unemployment were obtained from government sources...
March 14, 2017: Orthopedics
https://www.readbyqxmd.com/read/28291651/challenges-in-total-hip-arthroplasty-in-the-setting-of-developmental-dysplasia-of-the-hip
#8
Eric M Greber, Christopher E Pelt, Jeremy M Gililland, Mike B Anderson, Jill A Erickson, Christopher L Peters
BACKGROUND: Developmental dysplasia of the hip (DDH) is a recognized cause of secondary arthritis, which may eventually lead to total hip arthroplasty (THA). An understanding of the common acetabular and femoral morphologic abnormalities will aid the surgeon in preparing for the complexity of the surgical case. METHODS: We present the challenges associated with acetabular and femoral morphologies that may be present in the dysplastic hip and discuss surgical options to consider when performing THA...
February 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28290307/a-probable-case-of-legg-calv%C3%A3-perthes-disease-in-warring-states-era-china
#9
Elizabeth Berger, Liang Chen, Zhouyong Sun, Zhanwei Sun
Reports of Legg-Calvé-Perthes disease (LCPD) in the paleopathological literature are rare. Here, the authors present a probable case of LCPD, which presents as abnormal morphology of the proximal femur. The condition was observed in an individual of the Warring States period in Shaanxi Province, China, and the morphology involves a "mushroom head" deformity of the proximal right femur and an enlarged acetabulum, along with a contralateral tibia, talus, and navicular that are enlarged and demonstrate periosteal new bone formation...
March 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28286463/range-of-movement-for-impingement-and-dislocation-avoidance-in-total-hip-replacement-predicted-by-finite-element-model
#10
Laura Ezquerra, María Paz Quilez, María Ángeles Pérez, Jorge Albareda, Belén Seral
Dislocation is a serious complication in total hip replacement (THR). An inadequate range of movement (ROM) can lead to impingement of the prosthesis neck on the acetabular cup; furthermore, the initiation of subluxation and dislocation may occur. The objective of this study was to generate a parametric three-dimensional finite element (FE) model capable of predicting the dislocation stability for various positions of the prosthetic head, neck, and cup under various activities. Three femoral head sizes (28, 32, and 36 mm) were simulated...
2017: Journal of Medical and Biological Engineering
https://www.readbyqxmd.com/read/28271996/multi-detector-computed-tomography-mdct-findings-of-seven-cases-with-spontaneous-regression-of-hepatocellular-carcinoma
#11
Adel El-Badrawy
PURPOSE: To review Multi-detector CT findings of seven cases with spontaneous regression of hepatocellular carcinomas (HCC). MATERIALS AND METHODS: This retrospective study included 7 patients confirmed with diagnosis of HCC. Triphasic CT scan using multi-detector CT scanner was done for all patients. They were 2 women and 5 men. 1st patient presented with metastatic HCC underwent fine needle aspiration cytology (FNAC) from vertebral metastasis. 2nd patient underwent only one session of trans-arterial chemo-lipidol...
January 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28269629/hip-joint-geometry-effects-on-cartilage-contact-stresses-during-a-gait-cycle
#12
Hui-Hui Wu, Dong Wang, An-Bang Ma, Dong-Yun Gu
The cartilage surface geometry of natural human hip joint is commonly regarded as sphere. It has been widely applied in computational simulation and hip joint prosthesis design. Some new geometry models have been developed and the sphere assumption has been questioned recently. The objective of this study was to analyze joint geometry effects on cartilage contact stress distribution and investigate contact patterns during a whole gait cycle. Hip surface was reconstructed from CT data of a healthy volunteer...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268504/hip-segmentation-from-mri-volumes-in-infants-for-ddh-diagnosis-and-treatment-planning
#13
Abhilash Rakkunedeth Hareendranathan, Dornoosh Zonoobi, Myles Mabee, Chad Diederichs, Kumaradevan Punithakumar, Michelle Noga, Jacob L Jaremko
Diagnosis and surgical management of Developmental Dysplasia of the Hip (DDH) relies on physical examination and 2D ultrasound scanning. Magnetic Resonance Imaging (MRI) can be used to complement existing techniques and could be advantageous in treatment planning due to its larger field of view. In this paper we propose a semi-automatic method to segment surface models of the acetabulum from MRI images. The method incorporates clinical knowledge in the form of intensity priors which are integrated into a Random Walker (RW) formulation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262454/acetabulum-only-revision-total-hip-arthroplasty-is-associated-with-good-functional-outcomes-and-survivorship
#14
Jun Wei Lim, David Ridley, Linda R Johnston, Benedict A Clift
BACKGROUND: The coexistence of a stable femoral and a loose acetabular component may pose a clinical dilemma for the surgeon. Our study aims at comparing the intermediate functional outcomes and survivorship of acetabulum-only revision total hip arthroplasty (ArTHA) with an age-matched and gender-matched total revision THA (TrTHA) group. METHODS: We retrospectively reviewed prospectively collected data on the pain, function, and total Harris Hip Scores (HHS) and complication profile for ArTHA and TrTHA cohorts from our regional arthroplasty database...
February 14, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28254156/three-dimensional-computed-tomography-analysis-on-bony-birth-canal-after-bilateral-periacetabular-osteotomy
#15
Tetsuro Ishimatsu, Masatoshi Naito, Koichi Kinoshita, Satohiro Ishii, Takuaki Yamamoto
BACKGROUND: Curved periacetabular osteotomy (CPO) is one of the joint preserving procedures for developmental dysplasia of the hip. CPO requires osteotomy of the medial wall of the acetabulum, which may cause narrowing of the bony birth canal and this step may result in increased risk of cesarean delivery. We analyzed the narrowest part of the bony birth canal using three-dimensional computed tomography (3D-CT) before and after bilateral CPO. METHODS: Between February 2007 and March 2014, there were 29 cases of bilateral CPO in which both pre- and post-operative 3D-CT were available...
February 18, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28253949/-bilateral-asymmetric-traumatic-dislocation-of-hip-joints
#16
L Paša, R Veselý, M Kelbl
The authors present a rare case of bilateral asymmetric traumatic dislocation of hip joints, where the left joint was treated conservatively after the reduction, while the right joint, with an acetabular fragment interposition, was treated surgically - by arthroscopically assisted reduction and fixation of an osteochondral fragment of posterior wall of the acetabulum. The female patient healed with no complications, showing an excellent clinical outcome with no signs of instability or limited mobility of hip joints, and also with no signs of para-articular calcification or necrosis of the hip at 1 year after the injury and treatment...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28249976/bone-penetration-of-intravenous-flucloxacillin-and-gentamicin-as-antibiotic-prophylaxis-during-total-hip-and-knee-arthroplasty
#17
M S Torkington, M J Davison, E F Wheelwright, P J Jenkins, I Anthony, A M Lovering, M Blyth, B Jones
AIMS: To investigate the bone penetration of intravenous antibiotic prophylaxis with flucloxacillin and gentamicin during hip and knee arthroplasty, and their efficacy against Staphylococcus (S.) aureus and S. epidermidis. PATIENTS AND METHODS: Bone samples from the femoral head, neck and acetabulum were collected from 18 patients undergoing total hip arthroplasty (THA) and from the femur and tibia in 21 patients during total knee arthroplasty (TKA). The concentration of both antibiotics in the samples was analysed using high performance liquid chromatography...
March 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28249968/defining-modes-of-failure-after-joint-preserving-surgery-of-the-hip
#18
P E Beaulé, H Bleeker, A Singh, J Dobransky
AIMS: Joint-preserving surgery of the hip (JPSH) has evolved considerably and now includes a number of procedures, including arthroscopy, surgical dislocation, and redirectional osteotomies of the femur and acetabulum. There are a number of different factors which lead to failure of JPSH. Consequently, it is of interest to assess the various modes of failure in order to continue to identify best practice and the indications for these procedures. PATIENTS AND METHODS: Using a retrospective observational study design, we reviewed 1013 patients who had undergone JPSH by a single surgeon between 2005 and 2015...
March 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28247009/treatment-of-acetabular-fractures-in-older-patients-introduction-of-a-new-implant-for-primary-total-hip-arthroplasty
#19
H Resch, D Krappinger, P Moroder, A Auffarth, M Blauth, J Becker
BACKGROUND: Fractures of the acetabulum in younger patients are commonly treated by open reduction and internal fixation. For elderly patients, stable primary total hip arthroplasty with the advantage of immediate postoperative mobilization might be the adequate treatment. For this purpose, a sufficiently stable fixation of the acetabular component is required. MATERIALS AND METHODS: Between August 2009 and 2014, 30 cases were reported in which all patients underwent total hip arthroplasty additionally to a customized implant designed as an antiprotrusion cage...
February 28, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28246617/modified-stoppa-approach-versus-ilioinguinal-approach-for-anterior-acetabular-fractures-a-systematic-review-and-meta-analysis
#20
REVIEW
Sanjay Meena, Pankaj Kumar Sharma, Samarth Mittal, Jyoti Sharma, Buddhadev Chowdhury
INTRODUCTION: Modified Stoppa approach was introduced as an alternative to ilioinguinal approach for management of anterior fractures of acetabulum in order to reduce complications of the latter. However, the efficacy of either approach over other is not well established. The aim of this meta-analysis is to compare the efficacy of modified stoppa and ilioinguinal approach in the management of acetabular fractures in terms of a) quality of reduction achieved b) complication rates c) functional outcomes d) operative time e) intra-operative blood loss...
January 2017: Bulletin of Emergency and Trauma
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