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acetabular reconstruction

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https://www.readbyqxmd.com/read/28325671/accurate-fixation-of-plates-and-screws-for-the-treatment-of-acetabular-fractures-using-3d-printed-guiding-templates-an-experimental-study
#1
Xu Chen, Xuanhuang Chen, Guodong Zhang, Haibin Lin, Zhengxi Yu, Changfu Wu, Xing Li, Yijun Lin, Wenhua Huang
OBJECTIVE: To investigate the feasibility of the use of 3D-printed guiding templates for accurate placement of plates and screws for internal fixation of acetabular fractures. METHODS: 3D models of the pelvises of 14 adult cadavers were reconstructed using computed tomography (CT). Twenty-eight acetabular fractures were simulated and placement positions for plates and screw trajectories were designed. Bending module was obtained by 3D cutting; guiding template was manufactured using 3D printing, and the plate was pre-bent according to the bending module...
March 7, 2017: Injury
https://www.readbyqxmd.com/read/28321426/quantitative-anatomic-analysis-of-the-native-ligamentum-teres
#2
Jacob D Mikula, Erik L Slette, Jorge Chahla, Alex W Brady, Renato Locks, Christiano A C Trindade, Matthew T Rasmussen, Robert F LaPrade, Marc J Philippon
BACKGROUND: While recent studies have addressed the biomechanical function of the ligamentum teres and provided descriptions of ligamentum teres reconstruction techniques, its detailed quantitative anatomy remains relatively undocumented. Moreover, there is a lack of consensus in the literature regarding the number and morphology of the acetabular attachments of the ligamentum teres. PURPOSE: To provide a clinically relevant quantitative anatomic description of the native human ligamentum teres...
February 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28318866/innovations-in-joint-preservation-procedures-for-the-dysplastic-hip-the-periacetabular-osteotomy
#3
Cecilia Pascual-Garrido, Michael D Harris, John C Clohisy
The Bernese periacetabular osteotomy is an effective treatment for symptomatic developmental dysplasia in the prearthritic young adult hip. Refinements in the periacetabular osteotomy technique and perioperative management have markedly improved the clinical outcomes and recovery in these patients. We will review the clinical presentation of acetabular dysplasia, indications for surgery, perioperative management, and contemporary refinements in technique including refined acetabular reduction, adjunctive hip arthroscopy, femoral head-neck osteochondroplasty, femoral procedures, and rapid recovery protocols...
February 14, 2017: Journal of Arthroplasty
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
#4
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/28295578/measurement-of-acetabular-version-based-on-biplanar-radiographs-with-3d-reconstructions-in-comparison-to-ct-as-reference-standard-in-cadavers
#5
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/28291651/challenges-in-total-hip-arthroplasty-in-the-setting-of-developmental-dysplasia-of-the-hip
#6
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/28287388/kerboull-type-plate-in-a-direct-anterior-approach-for-severe-bone-defects-at-primary-total-hip-arthroplasty-technical-note
#7
Mikio Matsumoto, Tomonori Baba, Hironori Ochi, Yu Ozaki, Taiji Watari, Yasuhiro Homma, Kazuo Kaneko
INTRODUCTION: For cases with extensive acetabular bone defects, we perform surgery combining the Kerboull-type (KT) plate and bone graft through direct anterior approach (DAA) in primary total hip arthroplasty (THA) requiring acetabular reconstruction as minimally invasive surgery. This paper provides the details of the surgical procedure. METHODS: The basic structure of the Kerboull-type plate is a cruciform plate. Since the hook of the Kerboull-type plate has to be applied to the tear drop, a space for it was exposed...
2017: SICOT-J
https://www.readbyqxmd.com/read/28254154/total-hip-arthroplasty-with-step-cut-subtrochanteric-femoral-shortening-osteotomy-in-high-riding-hip-dislocated-patients-with-previous-femoral-osteotomy
#8
Vahit Emre Ozden, Goksel Dikmen, Burak Beksac, Ismail Remzi Tozun
BACKGROUND: To evaluate the long-term clinical and radiological outcomes of cementless total hip arthroplasty (THA) in high riding hip dislocated patients with previous proximal femoral osteotomy. METHODS: Twenty-one consecutive patients with a mean age forty-two years were treated with cementless THA Step-cut subtrochanteric femoral osteotomy was performed in all twenty-eight hips. Metal on polyethylene (MoP) and ceramic on ceramic (CoC) bearings were used in two different consecutive time periods...
February 18, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28218378/screw-hole-clusters-in-acetabular-cups-a-morphological-study-of-optimal-positioning-of-screw-holes
#9
Xinghua Yin, Yixin Zhou, Qiheng Tang, Dejin Yang, Hao Tang, Xingjian Huang
BACKGROUND: Rigid and safe transacetabular screw fixation in total hip arthroplasty (THA) is achieved by pursuing deeper bone stock and avoiding injuries to the neurovascular structures, but these efforts can be restricted by the distribution of screw-holes on cups by the manufacturer. We therefore tried to determine: (i) optimal screw-hole positions on cups to allow anatomical placement of screws; (ii) rationality of the basic 3-screw-hole cluster on commercial cups; and (iii) the optimum method for placing commercial cups in accordance with acetabular anatomy...
February 15, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28218375/retrieval-and-radiographic-analysis-of-the-contour-antiprotrusio-cage
#10
Jonathan M Vigdorchik, Richard S Yoon, Susannah L Gilbert, Joseph D Lipman, Mathias P Bostrom
INTRODUCTION: Acetabular reconstruction in the setting of severe bone loss or pelvic discontinuity remains a challenging problem. Multiple methods of treatment have been described including antiprotrusio cages (APCs). The objective of this study is to combine biomechanical analysis of retrieved APCs with radiographic and clinical data to determine which factors influence or predict APC failure. METHODS: 41 APCs were identified. Sequential radiographs were examined for cage and polyethylene cup abduction angles, change in centre of rotation, screw placement, progression of cage failure, and failure mechanism...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28207829/three-dimensional-acetabular-orientation-measurement-in-a-reliable-coordinate-system-among-one-hundred-chinese
#11
Henghui Zhang, Yiping Wang, Songtao Ai, Xiaojun Chen, Liao Wang, Kerong Dai
Determining three-dimensional (3D) acetabular orientation is important for several orthopaedic scenarios, but the complex geometries of both pelvis and acetabulum make measurements of orientation unreliable. Acetabular orientation may also differ between the sexes or racial groups. We aimed to (1) establish and evaluate a novel method for measuring 3D acetabular orientation, (2) apply this new method to a large population of Chinese subjects, and (3) report relevant characteristics of native acetabular orientation in this population...
2017: PloS One
https://www.readbyqxmd.com/read/28195988/decision-making-for-labral-treatment-in-the-hip-repair-versus-d%C3%A3-bridement-versus-reconstruction
#12
Benjamin G Domb, David E Hartigan, Itay Perets
The role and function of the acetabular labrum have been studied extensively in the past decade. Recent studies have proposed that, in addition to causing pain and mechanical symptoms, labral tears may accelerate arthritis. Labral preservation is believed to be important because of the role the labrum plays in maintaining a healthy joint. Treatment of the acetabular labrum is becoming one of the fastest growing fields in orthopaedics; therefore, the treatment decision-making process must be refined. Currently, three commonly practiced labral treatments are available: repair, débridement, and reconstruction...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28184362/uncemented-total-hip-replacement-after-two-years-of-neglected-hip-dislocation-with-fracture-of-posterior-column-and-wall-of-the-acetabulum
#13
Sundaresh Dc, Sharath K Ramanath, Amit Grover, Daksh Gadi
INTRODUCTION: Posterior hip dislocation of the hip with acetabular fracture is a challenging problem to treat. Such dislocations are associated with avascular necrosis of the femoral head if neglected. Managing such conditions with total hip replacement (THR) is very difficult because of associated altered anatomy. CASE PRESENTATION: We hereby report a two-year neglected hip dislocation with associated acetabular fracture successfully treated with uncemented THR...
November 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28168060/3d-printing-aids-acetabular-reconstruction-in-complex-revision-hip-arthroplasty
#14
Andrew J Hughes, Cathal DeBuitleir, Philip Soden, Brian O'Donnchadha, Anthony Tansey, Ali Abdulkarim, Colm McMahon, Conor J Hurson
Revision hip arthroplasty requires comprehensive appreciation of abnormal bony anatomy. Advances in radiology and manufacturing technology have made three-dimensional (3D) representation of osseous anatomy obtainable, which provide visual and tactile feedback. Such life-size 3D models were manufactured from computed tomography scans of three hip joints in two patients. The first patient had undergone multiple previous hip arthroplasties for bilateral hip infections, resulting in right-sided pelvic discontinuity and a severe left-sided posterosuperior acetabular deficiency...
2017: Advances in Orthopedics
https://www.readbyqxmd.com/read/28165596/screws-are-not-needed-when-secure-interference-fit-of-uncemented-acetabular-components-is-adequate-a-5-to-15-year-follow-up-with-clinical-and-radiological-analysis
#15
Eduardo García-Rey
PURPOSE: Even with good surgical preparation, adequate primary stability of the acetabular component is not always achieved after primary total hip replacement (THR). We hypothesise that adequate bone preparation for appropriate cortical loading would allow us to avoid screw use. METHODS: A total of 791 uncemented cups were analysed to compare the need for screws to obtain primary fixation in 5 different designs. Arthritic hips with inflammatory arthritis or severe congenital hip disease were excluded...
January 31, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28163241/application-of-3d-printing-for-treating-fractures-of-both-columns-of-the-acetabulum-benefit-of-pre-contouring-plates-on-the-mirrored-healthy-pelvis
#16
Peter Upex, Pomme Jouffroy, Guillaume Riouallon
Acetabular fractures can be challenging to treat, in part because the shape of the fixation plates needs to be adjusted during the surgical procedure. One possibility is to generate a model of the uninjured half of a fractured pelvis with 3D printing, and then pre-contour the fixation plates preoperatively on this model. The purpose of this technical note is to describe how we used 3D printing as an aid to treat acetabular fractures. The quality of the fracture reduction, fracture fixation and time savings were evaluated...
February 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28157085/surgical-strategy-in-intra-pelvic-cup-migration-during-total-hip-arthroplasty-a-case-study
#17
Andrzej Pozowski, Mateusz Kowal, Jadwiga Kuciel Lewandowska, Małgorzata Paprocka Borowicz
We report the case of a 63-year-old female patient referred to our department due to an early postoperative complication resulting from intraoperative fault. During the preparation of a bone socket for the acetabular cup, the acetabular fossa was broken, forming an extensive segmental defect of the diameter of the reamer used. An attempt to stabilize the acetabular prosthesis using bone cement without repairing the bone defect was ineffective and inappropriate. During the deposition of the acetabular prosthesis on the cement, much of the cement was pushed beyond the outline of the bony acetabulum...
May 5, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28145959/early-results-of-acetabular-reconstruction-after-wide-periacetabular-oncologic-resection
#18
Matthew P Abdel, Philipp von Roth, Kevin I Perry, Peter S Rose, David G Lewallen, Franklin H Sim
BACKGROUND: Reliable acetabular fixation in total hip arthroplasty following periacetabular resections is challenging. Tantalum components have been successfully implemented for difficult revision arthroplasties, but, to our knowledge, have not been reported for acetabular reconstruction following oncologic periacetabular resection. The primary purpose of the current study was to determine the early clinical outcomes, complications, and radiographic findings for acetabular reconstruction after oncologic periacetabular resection...
February 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28137249/multiplanar-evaluation-of-radiological-findings-associated-with-acetabular-dysplasia-and-investigation-of-its-prevalence-in-an-asian-population-a-ct-based-study
#19
Tomohiro Mimura, Kanji Mori, Masahiro Kitagawa, Mariko Ueki, Yuki Furuya, Taku Kawasaki, Shinji Imai
BACKGROUND: Acetabular dysplasia (AD) is a well-known cause of osteoarthritis (OA) of the hip, with its prevalence previously determined on plain radiography. The prevalence of preexisting AD was reported as 7.3% in a patient-based Asian population. Although computed tomography (CT) could evaluate AD in multiple planes, its prevalence using multiplanar CT images has not been reported. We investigated its prevalence with CT on coronal, axial, and sagittal planes and then determined if adding the axial and sagittal planes enhanced the investigation...
January 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28134050/how-to-obtain-and-identify-the-acetabular-anterior-column-axial-view-projection-in-patients
#20
Xiaoreng Feng, Huijie Fan, Frankie Leung, Bin Chen
PURPOSE: This study aims at sharing our experience as how to obtain and identify axial view image of the acetabular anterior column in patients. METHODS: Pelvic computed tomography data of six normal adults were used to reconstruct three-dimensional (3D) models. The transparency of each 3D model was downgraded at the view perpendicular to the cross section of the anterior column axis to simulate the anterior column axial view image. Fluoroscopy was performed in all patients to obtain the anterior column axial view image in the operating room...
January 2017: Journal of Orthopaedic Surgery
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