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acetabular reconstruction

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https://www.readbyqxmd.com/read/28542504/level-of-surgical-experience-is-associated-with-change-in-hip-center-of-rotation-following-cementless-total-hip-arthroplasty-a-radiographic-assessment
#1
Seung-Chan Kim, Young-Wook Lim, Soon-Yong Kwon, Woo-Lam Jo, Sung-Hun Ju, Chan-Joo Park, Choong-Woo Lee, Yong-Sik Kim
OBJECTIVES: After total hip arthroplasty (THA), restoration of hip center of rotation (COR) is essential to ensure stability of the prosthetic hip and longevity of the prosthesis. Our aim was to determine whether, and how, the COR changed postoperatively compared to the native COR following implantation of a cementless acetabular component in anatomical position and to compare the accuracy of cup placement between two surgeons with different levels of surgical experience. MATERIALS AND METHODS: We evaluated 145 patients (145 hips) who underwent unilateral primary THA, who had no distorted acetabulum on the affected hip and a normal contralateral hip...
2017: PloS One
https://www.readbyqxmd.com/read/28529110/the-double-cup-construct-a-novel-treatment-strategy-for-the-management-of-paprosky-iiia-and-iiib-acetabular-defects
#2
Jonathan E Webb, Robert J McGill, Brian T Palumbo, Wayne E Moschetti, Daniel M Estok
BACKGROUND: Treatment of massive acetabular bone loss in revision total hip arthroplasty is complex, and various treatment strategies have been described. We describe a novel technique of using a Trabecular Metal Revision Shell as a buttress augment creating a "double-cup" construct rather than the use of custom triflanges or cup-cage constructs for Paprosky types IIIA and IIIB acetabular defects. METHODS: We retrospectively reviewed 20 double-cup cases at a mean of 2...
April 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28463925/construct-rigidity-keystone-for-treating-pelvic-discontinuity
#3
J Ryan Martin, Ian Barrett, Rafael J Sierra, David G Lewallen, Daniel J Berry
BACKGROUND: Pelvic discontinuity is uncommon and presents the surgeon with complex reconstructive challenges. The objective of this study is to report the results of current strategies used in the treatment of pelvic discontinuity. METHODS: We retrospectively analyzed prospectively collected data on 113 consecutive revision total hip arthroplasties performed for the treatment of unilateral pelvic discontinuity at a single institution. The study included 18 male and 95 female patients with a mean age of 63 years at the time of revision surgery...
May 3, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28461922/bone-grafts-bone-graft-extenders-substitutes-and-enhancers-for-acetabular-reconstruction-in-revision-total-hip-arthroplasty
#4
REVIEW
Luca Pierannunzii, Luigi Zagra
Acetabular bone loss is a relevant concern for surgeons dealing with a failed total hip arthroplasty.Since the femoral head is no longer available, allografts represent the first choice for most reconstructive solutions, either as a structural buttress or impacted bone chips.Even though fresh-frozen bone is firmly recommended for structural grafts, freeze-dried and/or irradiated bone may be used alternatively for impaction grafting. Indeed, there are some papers on freeze-dried or irradiated bone impaction grafting, but their number is limited, as is the number of cases...
December 2016: EFORT Open Rev
https://www.readbyqxmd.com/read/28455469/management-of-massive-acetabular-bone-defects-in-revision-arthroplasty-of-the-hip-using-a-reconstruction-cage-and-porous-metal-augment
#5
T J Mäkinen, M Abolghasemian, E Watts, S G Fichman, P Kuzyk, O A Safir, A E Gross
AIMS: It may not be possible to undertake revision total hip arthroplasty (THA) in the presence of massive loss of acetabular bone stock using standard cementless hemispherical acetabular components and metal augments, as satisfactory stability cannot always be achieved. We aimed to study the outcome using a reconstruction cage and a porous metal augment in these patients. PATIENTS AND METHODS: A total of 22 acetabular revisions in 19 patients were performed using a combination of a reconstruction cage and porous metal augments...
May 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28432458/is-the-evaluation-of-the-anterior-inferior-iliac-spine-aiis-in-the-ap-pelvis-possible-analysis-of-conventional-x-rays-and-3d-ct-reconstructions
#6
David R Krueger, Markus Windler, Markus Geßlein, Michael Schuetz, Carsten Perka, Joerg H Schroeder
INTRODUCTION: A hypertrophic AIIS has been identified as a cause for extraarticular hip impingement and is classified according to Hetsroni using 3D-CT reconstructions. The role of the conventional AP pelvis X-ray, which is the first standard imaging step for the evaluation of hip pain, has not been investigated yet. MATERIALS AND METHODS: AP pelvis X-rays and 3D-CT reconstructions of patients were evaluated regarding their morphology of the AIIS. The conventional X-rays were categorized into three groups according to the projection of the AIIS: above (A) or below (B) the acetabular sourcil or even exceeding the anterior acetabular rim (C)...
April 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28428032/does-semi-automatic-bone-fragment-segmentation-improve-the-reproducibility-of-the-letournel-acetabular-fracture-classification
#7
M Boudissa, B Orfeuvre, M Chabanas, J Tonetti
BACKGROUND: The Letournel classification of acetabular fracture shows poor reproducibility in inexperienced observers, despite the introduction of 3D imaging. We therefore developed a method of semi-automatic segmentation based on CT data. The present prospective study aimed to assess: 1) whether semi-automatic bone-fragment segmentation increased the rate of correct classification; 2) if so, in which fracture types; and 3) feasibility using the open-source itksnap 3.0 software package without incurring extra cost for users...
April 17, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28408155/arthroscopic-capsular-plication-and-labral-seal-restoration-in-borderline-hip-dysplasia-2-year-clinical-outcomes-in-55-cases
#8
Sivashankar Chandrasekaran, Nader Darwish, Timothy J Martin, Carlos Suarez-Ahedo, Parth Lodhia, Benjamin G Domb
PURPOSE: To report clinical outcomes in patients with borderline dysplasia undergoing an arthroscopic technique of labral seal restoration with minimal acetabular rim resection and capsular plication. METHODS: Patients younger than 40 years with a lateral center-edge angle of 18° greater and 25° or less and 2-year follow-up after undergoing an arthroscopic technique of labral seal restoration with minimal rim resection (≤2 mm) and capsular plication (3-5 sutures placed in an oblique orientation to create an imbrication and inferior shift) were included...
April 10, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28396084/impaction-grafting-made-easy
#9
Stephen A Jones
BACKGROUND: Impaction bone grafting is an established reconstruction technique to address bone loss in revision total hip arthroplasty. Intuitively, it would seem to be a very attractive method as "missing bone is replaced with bone." The potential restoration of bone stock is of particular value in the younger patient who may be facing future revision procedures. METHODS AND RESULTS: Although undoubtedly some units have published good results with this method, more recent long-term data have revealed some of the limitations of this reconstruction technique...
March 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28391517/preoperative-digital-planning-versus-postoperative-outcomes-in-total-hip-arthroplasty-using-a-calcar-guided-short-stem-frequent-valgization-can-be-avoided
#10
Karl Philipp Kutzner, Joachim Pfeil, Mark Predrag Kovacevic
INTRODUCTION: Modern total hip arthroplasty is largely dependent on the successful preservation of hip geometry. Thus, a successful implementation of the preoperative planning is of great importance. The present study evaluates the accuracy of anatomic hip reconstruction predicted by 2D digital planning using a calcar-guided short stem of the newest generation. METHODS: A calcar-guided short stem was implanted in 109 patients in combination with a cementless cup using the modified anterolateral approach...
April 8, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28377356/-application-of-3d-printing-and-computer-assisted-surgical-simulation-in-preoperative-planning-for-acetabular-fracture
#11
Xin Liu, Can-Jun Zeng, Jian-Sen Lu, Xu-Chen Lin, Hua-Jun Huang, Xin-Yu Tan, Dao-Zhang Cai
OBJECTIVE: To evaluate the feasibility and effectiveness of using 3D printing and computer-assisted surgical simulation in preoperative planning for acetabular fractures. METHODS: A retrospective analysis was performed in 53 patients with pelvic fracture, who underwent surgical treatment between September, 2013 and December, 2015 with complete follow-up data. Among them, 19 patients were treated with CT three-dimensional reconstruction, computer-assisted virtual reset internal fixation, 3D model printing, and personalized surgery simulation before surgery (3D group), and 34 patients underwent routine preoperative examination (conventional group)...
March 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28375895/the-relationship-between-subluxation-percentage-of-the-femoroacetabular-joint-and-acetabular-width-in-asian-women-with-developmental-dysplasia-of-the-hip
#12
Yaichiro Okuzu, Koji Goto, Tomotoshi Kawata, Kazutaka So, Yutaka Kuroda, Shuichi Matsuda
BACKGROUND: Implantation of the acetabular cup insert in the "true" location of the acetabulum is a fundamental principle of total hip arthroplasty for the treatment of secondary osteoarthritis due to developmental dysplasia of the hip (DDH). As knowledge of the morphology of the acetabulum is required for accurate placement, we investigated the relationship between acetabular width and the Crowe classification of subluxation percentage of the hip. We also analyzed factors associated with the acetabular width ratio (AWR), defined as the acetabular width of the dysplastic hip divided by that of the unaffected, contralateral hip...
April 5, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28371596/biomechanical-assessment-of-hip-capsular-repair-and-reconstruction-procedures-using-a-6-degrees-of-freedom-robotic-system
#13
Marc J Philippon, Christiano A C Trindade, Mary T Goldsmith, Matthew T Rasmussen, Adriana J Saroki, Sverre Løken, Robert F LaPrade
BACKGROUND: Although acetabular labral repair has been biomechanically validated to improve stability, capsular management of the hip remains a topic of growing interest and controversy. PURPOSE: To biomechanically evaluate the effects of several arthroscopically relevant conditions of the capsule through a robotic, sequential sectioning study. STUDY DESIGN: Controlled laboratory study. METHODS: Ten human cadaveric unilateral hip specimens (mean age, 51...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28366746/acetabular-bone-defects-in-tha-revision-reconstruction-using-morsellised-virus-inactivated-bone-allograft-and-reinforcement-ring-seven-year-outcomes-in-95-patients
#14
G Villatte, R Erivan, G Salles, B Pereira, M Galvin, S Descamps, S Boisgard
BACKGROUND: Acetabular cup loosening is among the main reasons for revision total hip arthroplasty (THA). The implantation of a cryopreserved morsellised bone allograft is a reference method for filling bone defects. However, the outcomes of bone grafts treated with viral inactivation and secured into the host bone (notably using a reinforcement device) are unclear. We therefore retrospectively reviewed cases of acetabular revision with morsellised bone allograft implanted into a reinforcement ring for acetabular revision to assess: 1) clinical survival of the acetabular implant (time to new revision with acetabular component removal), 2) radiological implant survival, 3) and bone graft osseointegration evaluated using Oswestry's criteria...
March 30, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28361019/results-of-single-stage-exchange-arthroplasty-with-retention-of-well-fixed-cement-less-femoral-component-in-management-of-infected-total-hip-arthroplasty
#15
Wael A Rahman, Hussain A Kazi, Jeffery D Gollish
AIM: To investigate success of one stage exchange with retention of fixed acetabular cup. METHODS: Fifteen patients treated by single stage acetabular component exchange with retention of well-fixed femoral component in infected total hip arthroplasty (THA) were retrospectively reviewed. Inclusion criteria were patients with painful chronic infected total hip. The patient had radiologically well fixed femoral components, absence of major soft tissue or bone defect compromising, and infecting organism was not poly or virulent micro-organism...
March 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28353049/single-stage-acetabular-revision-during-two-stage-tha-revision-for-infection-is-effective-in-selected-patients
#16
Bernd Fink, Michael Schlumberger, Damian Oremek
BACKGROUND: The treatment of periprosthetic infections of hip arthroplasties typically involves use of either a single- or two-stage (with implantation of a temporary spacer) revision surgery. In patients with severe acetabular bone deficiencies, either already present or after component removal, spacers cannot be safely implanted. In such hips where it is impossible to use spacers and yet a two-stage revision of the prosthetic stem is recommended, we have combined a two-stage revision of the stem with a single revision of the cup...
March 28, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28342820/injury-of-the-obturator-nerve-in-the-modified-stoppa-approach-for-acetabular-fractures
#17
Ji Wan Kim, Hyun Chul Shon, Jai Hyung Park
INTRODUCTION: The modified Stoppa approach for acetabular fractures has become popular. However, the possibility of injury to the obturator nerve with this approach has not been sufficiently considered. We have experienced a case of nerve entrapment in severely displaced fractures. Therefore we performed a retrospective study to: 1) evaluate the incidence of obturator nerve injury in the modified Stoppa approach for acetabular fractures, 2) analyze the relationship between the extent of displacement of the quadrilateral plate and injury to the obturator nerve HYPOTHESIS: We hypothesized that obturator nerve injury would be related to a marked medial displacement of the quadrilateral plate PATIENTS AND METHODS: We conducted a retrospective cohort study of 22 patients with acetabular fractures that were surgically treated with the modified Stoppa approach...
March 22, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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
#18
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
#19
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
#20
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
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