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https://www.readbyqxmd.com/read/27912788/osteoid-osteoma-of-the-acetabulum-successfully-treated-with-computed-tomography-guided-resection-and-ablation-using-a-standard-electrosurgical-generator-a-case-report
#1
Kazutaka Kikuta, Sota Oguro, Tatsuya Yamamoto, Tetsuya Sekita, Sayaka Yamaguchi, Michiro Susa, Kazumasa Nishimoto, Masanori Inoue, Seishi Nakatsuka, Aya Sasaki, Kaori Kameyama, Masaya Nakamura, Morio Matsumoto, Hideo Morioka
BACKGROUND: Osteoid osteoma accounts for approximately 10% of all benign bone tumors. The most common sites of osteoid osteoma are the subcortical shaft and metaphyses of long bones, but any other skeletal bone site can be involved. The acetabulum is a rare site according to past reports. This site presents challenges to optimal management because it is anatomically difficult to approach, and because its rarity leads to limited experience with therapeutic procedures. Here, we report for the first time a rare case of osteoid osteoma in the acetabulum that was successfully treated via resection of the nidus and ablation using a standard electrosurgical generator under computed tomographic guidance...
December 3, 2016: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/27912753/radiographic-evaluation-of-early-periprosthetic-acetabular-bone-contrast-and-prosthetic-head-acetabular-coverage-after-uncemented-and-cemented-total-hip-prosthesis-in-dogs
#2
Ayman A Mostafa, Karin Lucas, Ingo Nolte, Patrick Wefstaedt
BACKGROUND: Coxofemoral osteoarthritis is a chronic, disabling condition affecting people and dogs, with THA providing an excellent return to function in severely affected joints. The principal role of THA is to restore an adequate range of motion to the hip joint while transferring load from the acetabulum in order to improve the survival of the implant and enhance the limb function in the short and long terms. The objectives of the study reported here were, therefore, to radiographically evaluate periprosthetic acetabular bone GV and to assess prosthetic head acetabular coverage after 4 months of uncemented and cemented THA in dogs...
December 3, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27911454/steady-state-acetabular-cartilage-wear-after-bipolar-hemiarthroplasty-a-case-series-of-10-patients-with-radiostereometric-analysis
#3
Masako Tsukanaka, Ragnhild Ø Støen, Wender Figved, Frede Frihagen, Lars Nordsletten, Stephan M Röhrl
INTRODUCTION: Cartilage wear is a concern after hemiarthroplasty. The precise pattern of the progression of wear has not been evaluated. We previously reported the application of radiostereonetric analysis (RSA) for the measurement of cartilage wear in patients. The purpose of this study was to report the amount and the orientation of the steady state wear of cartilage between 1 and 3 years after bipolar hemiarthroplasty. METHODS: 22 patients with a bipolar hemiarthroplasty for displaced femoral neck fracture were included...
December 2, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27911346/influence-of-pelvic-tilt-on-functional-acetabular-orientation
#4
Robert K Zahn, Sarah Grotjohann, Matthias Pumberger, Heiko Ramm, Stefan Zachow, Michael Putzier, Carsten Perka, Stephan Tohtz
BACKGROUND: Pelvic tilt influences acetabular orientation (AO). Anatomical AO can be measured in relation to the anterior pelvic plane (APP), functional AO can be calculated relative to table's plane. OBJECTIVE: To assess to what extent functional AO is determined by pelvic tilt and if APP and table plane give equal information for correct AO. METHODS: AO was evaluated by computed tomography (CT) scans of 138 patients. Pelvic tilt, anatomical and functional AO were measured, differences between the two reference planes were calculated...
November 25, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27909669/reconstruction-of-massive-posterior-nonrepairable-acetabular-labral-tears-with-peroneus-brevis-tendon-allograft-arthroscopy-assisted-mini-open-approach
#5
Esther Moya, Luis Gerardo Natera, Carlomagno Cardenas, Emanuele Astarita, Vittorio Bellotti, Manel Ribas
Many of the described labral-reconstruction procedures are purely arthroscopic. This approach only allows segmentary reconstructions. For more extensive reconstructions, surgical dislocation of the hip still represents the more suitable approach. We present an arthroscopy-assisted procedure combined with an anterior mini-open approach, which could be considered for reconstruction of nonrepairable labral lesions located in the posterior aspect of the acetabulum and massive reconstructions in cases of global-pincer femoroacetabular impingement and protrusio acetabuli...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909120/restoration-of-the-centre-of-rotation-in-primary-total-hip-arthroplasty-the-influence-of-acetabular-floor-depth-and-reaming-technique
#6
G Meermans, J Van Doorn, J-J Kats
AIMS: One goal of total hip arthroplasty is to restore normal hip anatomy. The aim of this study was to compare displacement of the centre of rotation (COR) using a standard reaming technique with a technique in which the acetabulum was reamed immediately peripherally and referenced off the rim. PATIENTS AND METHODS: In the first cohort the acetabulum was reamed to the floor followed by sequentially larger reamers. In the second cohort the acetabulum was only reamed peripherally, starting with a reamer the same size as the native femoral head...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27896435/course-of-pelvic-lift-during-total-hip-arthroplasty
#7
Steffen Brodt, Dimitri Nowack, Linda Krakow, Christoph Windisch, Georg Matziolis
INTRODUCTION: The position of the cup makes a major contribution to the success of total hip arthroplasty (THA). In conventional implantation of the prosthesis without navigation, the surgeon relies on the spatial position of the pelvis. However, iatrogenic manipulation of the pelvis during different surgical steps constantly changes the position of the pelvis during the operation. The position of the pelvis is substantial for the correct placement of the cup. The objective of this study was to investigate and visualize the course of this pelvic lift and correlate it to certain surgical steps...
November 28, 2016: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/27885395/hip-instability-treated-with-arthroscopic-capsular-plication
#8
Michael M Kalisvaart, Marc R Safran
PURPOSE: Atraumatic microinstability of the hip is felt to be a cause of intra-articular pathology, particularly tears of the anterior labrum. The purpose of this study is to evaluate a consecutive series of patients with atraumatic hip microinstability that resulted in anterior labral and cartilage pathology, treated with hip arthroscopy and capsular plication without any associated bony procedures. METHODS: Thirty-two patients underwent hip arthroscopy and suture capsular plication for the treatment of hip instability without concomitant bony resections of the acetabulum or proximal femur between November 2009 and November 2012 and were followed for a minimum of 12 months...
November 24, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27884336/predictive-value-of-clinical-scoring-and-simplified-gait-analysis-for-acetabulum-fractures
#9
Benedikt J Braun, Julian Wrona, Nils T Veith, Mika Rollman, Marcel Orth, Steven C Herath, Jörg H Holstein, Tim Pohlemann
BACKGROUND: Fractures of the acetabulum show a high, long-term complication rate. The aim of the present study was to determine the predictive value of clinical scoring and standardized, simplified gait analysis on the outcome after these fractures. METHODS: Forty-one patients with acetabular fractures treated between 2008 and 2013 and available, standardized video recorded aftercare were identified from a prospective database. A visual gait score was used to determine the patients walking abilities 6-m postoperatively...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27871095/investigation-of-pelvic-injuries-on-eighteen-post-mortem-human-subjects-submitted-to-oblique-lateral-impacts
#10
Matthieu Lebarbé, Pascal Baudrit, Pascal Potier, Philippe Petit, Xavier Trosseille, Sabine Compigne, Mitsutoshi Masuda, Takumi Fujii, Richard Douard
The aim of this study was to investigate the sacroiliac joint injury mechanism. Two test configurations were selected from full scale car crashes conducted with the WorldSID 50(th) dummy resulting in high sacroiliac joint loads and low pubic symphysis force, i.e. severe conditions for the sacroiliac joint. The two test conditions were reproduced in laboratory using a 150-155 kg guided probe propelled respectively at 8 m/s and 7.5 m/s and with different shapes and orientations for the plate impacting the pelvis...
November 2016: Stapp Car Crash Journal
https://www.readbyqxmd.com/read/27857478/evaluation-of-the-effect-of-custom-burr-holes-on-a-surgeon-s-sense-of-screw-fixation-in-revision-porous-metal-cups
#11
Mark A Nyland, Brent A Lanting, Hristo N Nikolov, Lyndsay E Somerville, Matthew G Teeter, James L Howard
BACKGROUND/AIMS: It is common practice to burr custom holes in revision porous metal cups for screw insertion. The objective of this study was to determine how different hole types affect a surgeon's sense of screw fixation. METHODS: Porous revision cups were prepared with pre-drilled and custom burred holes. Cups were held in place adjacent to synthetic bone material of varying density. Surgeons inserted screws through the different holes and materials. Surgeon subjective rating, compression, and torque was recorded...
December 2016: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27846357/-kocher-langenbeck-approach-in-the-surgical-management-of-posterior-wall-fractures-of-the-acetabulum
#12
L J Fernández-Palomo
Surgical treatment of acetabular fractures is indicated in displaced cases in order to restore and stabilize the hip joint and the pelvic ring integrity. Posterior structure fractures must be treated through posterior pelvic surgical approaches. The Kocher-Langenbeck is the most recommended approach for the majority of posterior acetabular fractures.
March 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27837399/reconstruction-of-the-shallow-acetabulum-with-a-combination-of-autologous-bulk-and-impaction-bone-grafting-fixed-by-cement
#13
Masaaki Maruyama, Shinji Wakabayashi, Hiroshi Ota, Keiji Tensho
BACKGROUND: Acetabular bone deficiency, especially proximal and lateral deficiency, is a difficult technical problem during primary total hip arthroplasty (THA) in developmental dysplasia of the hip (DDH). We report a new reconstruction method using a medial-reduced cemented socket and additional bulk bone in conjunction with impaction morselized bone grafting (additional bulk bone grafting method). QUESTIONS/PURPOSES: In a population of patients with acetabular dysplasia undergoing THA using a medial-reduced cemented socket and additional bulk bone with impacted morselized bone grafting, we evaluated (1) the radiographic appearance of bone graft; (2) the proportion of cups that developed loosening and subsequent revision; and (3) clinical results (outcome scores and complications)...
November 11, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27836678/finite-element-analysis-of-mechanical-behavior-of-human-dysplastic-hip-joints-a-systematic-review
#14
REVIEW
B Vafaeian, D Zonoobi, M Mabee, A R Hareendranathan, M El-Rich, S Adeeb, J L Jaremko
Developmental dysplasia of the hip (DDH) is a common condition predisposing to osteoarthritis (OA). Especially since DDH is best identified and treated in infancy before bones ossify, there is surprisingly a near-complete absence of literature examining mechanical behavior of infant dysplastic hips. We sought to identify current practice in finite element modeling (FEM) of DDH, to inform future modeling of infant dysplastic hips. We performed multi-database systematic review using PRISMA criteria. Abstracts (n = 126) fulfilling inclusion criteria were screened for methodological quality, and results were analyzed and summarized for eligible articles (n = 12)...
November 9, 2016: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/27832011/mri-assessment-of-the-importance-of-the-acetabular-labrum-a-comparative-radiographic-and-mri-study-in-children-s-hips
#15
P Gutiérrez Carbonell, M Ojeda Peña
: To study the correlation between radiograph [acetabular index (AI)] and MRI measurements of the angles of children's hips and the percentage of coverage that labrum provides to the acetabulum in healthy hips of children. The healthy hips of 38 children, of a mean age of 7.7 years, were studied using anteroposterior radiographs and coronal plane MRI. We used picture archiving and communication systems software to measure the AI in hip radiographs and the acetabular bone index (ABI) and acetabular labrum index (ALI) in hip MRIs...
November 9, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27828848/lateral-shelf-acetabuloplasty-for-severe-legg-calv%C3%A3-perthes-disease-in-patients-older-than-8-years-a-mean-eleven-year-follow-up
#16
Wen-Chao Li, Rui-Jiang Xu
The natural history of Legg-Calvé-Perthes disease (LCPD) in children older than 8 years is usually poor without treatment. The treatment goal is to prevent deformity and incongruity of the hip by achieving a stable spherical femoral head in a deep, congruent, sharp-edged acetabulum, with a good range of hip movement at skeletal maturity. Lateral shelf acetabuloplasty in LCPD can increase the coverage of the femoral head, benefiting the remodeling of the femoral head and acetabulum. The aim of this study was to evaluate the efficacy of lateral shelf acetabuloplasty for severe LCPD in patients older than 8 years...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27826701/a-cadaver-study-validating-ct-assessment-of-acetabular-component-orientation-the-perth-ct-hip-protocol
#17
Varun Arora, Richard Hannan, Richard Beaver, Timothy Fletcher, Paul Harvie
OBJECTIVE: The aim was to develop a CT-based protocol to accurately measure post-operative acetabular cup inclination and anteversion establishing which bony reference points facilitate the most accurate estimation of these variables. MATERIALS AND METHODS: An all-polyethylene acetabular liner was implanted into a cadaveric acetabulum. A conventional pelvic CT scan was performed and reformatted images created in both functional and anterior pelvic planes. CT images were transferred to a Freedom-Plus Graphics software package enabling an identical, virtual 3D model of the cadaveric pelvis to be created and definitive acetabular cup orientation established...
November 8, 2016: Skeletal Radiology
https://www.readbyqxmd.com/read/27821103/a-comparison-of-multidisciplinary-team-residential-rehabilitation-with-conventional-outpatient-care-for-the-treatment-of-non-arthritic-intra-articular-hip-pain-in-uk-military-personnel-a-protocol-for-a-randomised-controlled-trial
#18
Russell J Coppack, James L Bilzon, Andrew K Wills, Ian M McCurdie, Laura Partridge, Alastair M Nicol, Alexander N Bennett
BACKGROUND: Non-arthritic hip disorders are defined as abnormalities of the articulating surfaces of the acetabulum and femur before the onset of osteoarthritis, including intra-articular structures such as the acetabular labrum and chondral surfaces. Abnormal femoroacetabular morphology is commonly seen in young men who constitute much of the UK military population. Residential multidisciplinary team (MDT) rehabilitation for patients with musculoskeletal injuries has a long tradition in the UK military, however, there are no studies presenting empirical data on the efficacy of a residential MDT approach compared with individualised conventional outpatient treatment...
November 8, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27811519/femoroacetabular-impingement-a-review
#19
Anthony C Egger, Salvatore Frangiamore, James Rosneck
Femoroacetabular impingement (FAI) is one of the most researched conditions in sports medicine today. FAI occurs due to abnormal morphology and subsequently contact between the proximal femur and the acetabulum. With repetitive loading, this femoroacetabular mismatch can be a source of labral and chondral injuries. FAI is more prevalent in the athletic population, particularly those athletes who participated in high level activities at a younger age. If nonoperative management is failed, surgical treatment is often done arthroscopically and with good results...
December 2016: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/27800574/periprosthetic-occult-fractures-of-the-acetabulum-occur-frequently-during-primary-tha
#20
Kazuhiro Hasegawa, Tamon Kabata, Yoshitomo Kajino, Daisuke Inoue, Hiroyuki Tsuchiya
BACKGROUND: Periprosthetic fractures of the acetabulum occurring during primary THA are rare. Periprosthetic occult fractures are defined as those not identified by the surgeon during the procedure which might be missed on a routine postoperative radiograph. However, it is unclear how frequently these fractures occur and whether their presence affects functional recovery. QUESTIONS/PURPOSES: In this study, using routine CT scans that were obtained as part of another primary hip arthroplasty study protocol, we retrospectively assessed (1) the prevalence of occult fractures of the acetabulum occurring during primary THA, (2) the location of occult fractures of the acetabulum during THA, and (3) risk factors contributing to such occult fractures...
October 31, 2016: Clinical Orthopaedics and related Research
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