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https://www.readbyqxmd.com/read/28715906/t2-mapping-provides-information-that-is-statistically-comparable-to-an-arthroscopic-evaluation-of-acetabular-cartilage
#1
Patrick Morgan, Mikko J Nissi, John Hughes, Shabnam Mortazavi, Jutta Ellerman
Objectives The purpose of this study was to validate T2* mapping as an objective, noninvasive method for the prediction of acetabular cartilage damage. Methods This is the second step in the validation of T2*. In a previous study, we established a quantitative predictive model for identifying and grading acetabular cartilage damage. In this study, the model was applied to a second cohort of 27 consecutive hips to validate the model. A clinical 3.0-T imaging protocol with T2* mapping was used. Acetabular regions of interest (ROI) were identified on magnetic resonance and graded using the previously established model...
July 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28711340/revision-total-hip-arthroplasty-using-the-kerboull-acetabular-reinforcement-device-and-structural-allograft-for-severe-defects-of-the-acetabulum
#2
Hiroyuki Makita, Marcel Kerboull, Yutaka Inaba, Taro Tezuka, Tomoyuki Saito, Luc Kerboull
BACKGROUND: The purpose of this study is to review our experience with Kerboull reinforcement device combined with bulk allograft for management of severe acetabular defects. METHODS: We investigated the results of revision total hip arthroplasty (THA) in 65 hips of 59 patients (10 male, 49 female) with Paprosky type 3A or 3B acetabular bone defects. Functional outcome was assessed using the Merle d'Aubigne hip score. Post-operative radiographs were examined for evidence of cup loosening...
June 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28708777/intraoperative-topical-antibiotics-for-infection-prophylaxis-in-pelvic-and-acetabular-surgery
#3
Matthew T Owen, Emily M Keener, Zane B Hyde, Reaves M Crabtree, Parke W Hudson, Russell L Griffin, Jason A Lowe
OBJECTIVES: Determine if topical vancomycin and tobramycin powder reduces the incidence of surgical site infection (SSI) following pelvic ring and acetabulum fracture surgery. DESIGN: Retrospective cohort study SETTING:: University of Alabama at Birmingham, Academic Level I Trauma Center PATIENTS/PARTICIPANTS:: 219 patients (140 meeting inclusion criteria) with pelvic and acetabular fractures who underwent open reduction and internal fixation (ORIF) from March 2012 to November 2013...
June 26, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28706837/intraosseous-infiltration-of-platelet-rich-plasma-for-severe-hip-osteoarthritis
#4
Nicolás Fiz, Juan Carlos Pérez, Jorge Guadilla, Ane Garate, Pello Sánchez, Sabino Padilla, Diego Delgado, Mikel Sánchez
This work describes a technique of platelet-rich plasma (PRP) infiltration for the treatment of severe hip osteoarthritis (OA). Although the results achieved with intra-articular infiltrations of PRP are promising, they may be insufficient in the long-term for severe hip OA. The technique consists of a combined intra-articular and intraosseous infiltration of PRP to reach all joint tissues, especially the subchondral bone, and hence facilitate a greater distribution of PRP. Diagnosis is based on clinical and radiographic findings, and patients with grade III OA according to the Tönnis scale, as well as patients who have not responded to conventional treatment, are considered candidates for this technique...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706834/screw-fixation-of-os-acetabuli-an-arthroscopic-technique
#5
Adrián Cuéllar, Xabier Albillos, Asier Cuéllar, Ricardo Cuéllar
An os acetabuli (OA) increases the contact area and surface area of the acetabulum and is important to maintain congruity of the hip joint. Thus preservation of this ossicle is important to prevent loss of contact area and ensure containment of the femoral head. We describe an all-arthroscopic approach to the fixation of OA with a compression screw. Initially, the fibrous tissue is debrided between the acetabular rim and the OA, a guidewire is placed through the OA up to the acetabular rim, and a screw is inserted over the wire...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706807/labral-gracilis-tendon-allograft-reconstruction-and-cartilage-regeneration-scaffold-for-an-uncontained-acetabular-cartilage-defect-of-the-hip
#6
Laurel E MacInnis, Ahmed Al Hussain, Catherine Coady, Ivan H Wong
Hip cartilage injuries are very common, with rates as high as 50% having been reported in some series; abnormal femoral acetabular contact can result in a full-thickness cartilage defect or labral lesion. The prevalence of labral lesions can be as high as 55%. This Technical Note describes an arthroscopic technique to reconstruct an uncontained, full-thickness, focal cartilage defect of the acetabulum, with reconstruction of the missing labrum using a gracilis allograft and use of a biological liquid scaffold for cartilage reconstruction...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706795/measurement-of-hip-contact-pressure-during-arthroscopic-femoroacetabular-impingement-surgery
#7
Mitsunori Kaya
Cam impingement is caused by jamming of an abnormal femoral head with an increased radius into the acetabulum during motion. Therefore, the elevation of the contact pressure during the motion is suspected to be an essential pathology of femoroacetabular impingement. However, there is no method to quantify the hip contact pressure during motion. The purpose of this Technical Note is to introduce a technique to measure the hip contact pressure during arthroscopic surgery. The author believes that the current technique will be a useful tool for the detailed investigation of the pathophysiology femoroacetabular impingement and thorough evaluation of its therapeutic significance...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706382/cementless-acetabular-component-with-or-without-upward-placement-in-dysplasia-hip-early-results-from-a-prospective-randomised-study
#8
Zhiqi Zhang, Peihui Wu, Zhiyu Huang, Baoxi Yu, Hong Sun, Ming Fu, Yan Kang, Weiming Liao
BACKGROUND: Total hip arthroplasty (THA) in developmental dysplasia of hip (DDH) is difficult for the abnormal acetabulum. The purpose of this study was to evaluate the difference of anatomic and upward placement of acetabular component during early stage. METHODS: From April 2014 through June 2015, forty DDH patients (Crowe I to III, 42 hips) were prospectively randomized to either anatomic or upward group. Patient recorded diaries were collected. Radiographs were reviewed...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28705509/cytochalasin-e-in-the-lichen-pleurosticta-acetabulum-anti-proliferative-activity-against-human-ht-29-colorectal-cancer-cells-and-quantitative-variability
#9
Sylvie Delebassée, Lengo A Mambu, Emilie Pinault, Yves Champavier, Bertrand Liagre, Marion Millot
A biological screening of sixteen lichen extracts on human HT-29 colorectal cancer cells, led to the selection of Pleurosticta acetabulum, a lichen widely present in tree barks in Europe. Bioguided purification of the acetonic extract resulted in the isolation of cytochalasin E, a common fungal metabolite. This compound is responsible for the anti-proliferative activity of the extract. Its presence in lichens is reported here for the first time. LC-MS quantitation of cytochalasin E in different samples of P...
July 10, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28697865/revision-total-hip-arthroplasty-using-a-cementless-cup-supporter-and-iliac-autograft-a-minimum-of-15-year-follow-up
#10
Kensuke Yoshino, Tadashi Tsukeoka, Yoshikazu Tsuneizumi, Tae Hyun Lee, Junichi Nakamura, Masahiko Suzuki, Seiji Ohtori
BACKGROUND: Bone deficiency in revision total hip arthroplasty is a surgical challenge. The Murata-Chiba cup supporter (MC support ring) is an acetabular component supporter for a cementless porous-coated cup. The purpose of this study is to examine the clinical and radiographic outcomes of reconstruction of acetabular bone deficiency using iliac autografts supported by an MC support ring in a revision setting with minimum 15-year follow-up. METHODS: Fifty-nine consecutive revision total hip arthroplasties (57 patients) using the MC support ring were followed for a minimum of 15 years...
June 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28696483/combined-bone-ingrowth-and-remodelling-around-uncemented-acetabular-component-a-multiscale-mechanobiology-based-finite-element-analysis
#11
Kaushik Mukherjee, Sanjay Gupta
Bone ingrowth and remodelling are two different evolutionary processes which might occur simultaneously. Both these processes are influenced by local mechanical stimulus. However, a combined study on bone ingrowth and remodelling has rarely been performed. This study is aimed at understanding the relationship between bone ingrowth and adaptation and their combined influence on fixation of the acetabular component. Based on 3-D macroscale FE model of implanted pelvis and microscale FE model of implant-bone interface, a multiscale framework has been developed...
July 11, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28692452/acetabular-protrusio-in-patients-with-osteogenesis-imperfecta-risk-factors-and-progression
#12
Junho Ahn, Erin Carter, Cathleen L Raggio, Daniel W Green
BACKGROUND: Osteogenesis imperfecta (OI) is a genetic disorder commonly associated with osteopenia, osteoporosis, bone fractures, bone deformities, and other clinical features. A frequent radiologic finding with OI is acetabular protrusio (AP). We hypothesized that AP develops in patients with OI over time. In addition, we hypothesized that AP also develops in patients with OI without radiographic evidence of AP on initial examination. METHODS: Medical records and radiographs of 55 patients (109 hips) diagnosed with OI evaluated at our institution were retrospectively reviewed...
July 7, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28686210/effects-of-titanium-mesh-surfaces-coated-with-hydroxyapatite-%C3%AE-tricalcium-phosphate-nanotubes-on-acetabular-bone-defects-in-rabbits
#13
Thuy-Duong Thi Nguyen, Tae-Sung Bae, Dae-Hyeok Yang, Myung-Sik Park, Sun-Jung Yoon
The management of severe acetabular bone defects in revision reconstructive orthopedic surgery is challenging. In this study, cyclic precalcification (CP) treatment was used on both nanotube-surface Ti-mesh and a bone graft substitute for the acetabular defect model, and its effects were assessed in vitro and in vivo. Nanotube-Ti mesh coated with hydroxyapatite/β-tricalcium phosphate (HA/β-TCP) was manufactured by an anodizing and a sintering method, respectively. An 8 mm diameter defect was created on each acetabulum of eight rabbits, then treated by grafting materials and covered by Ti meshes...
July 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28678149/periacetabular-quadruple-osteotomy-of-the-pelvis-in-older-children-computed-tomography-scan-analysis-of-acetabular-retroversion-and-anterior-overcoverage-of-the-hip-preventing-femoral-acetabular-impingement
#14
Roger Jawish, Hassan Najdi, Ali Krayan
The periacetabular quadruple osteotomy of the pelvis (QOP), with the osteotomy of ischial spine to release the sacrospinal ligament, is reserved for older children with low potential of remodeling. Different parameters were studied with computed tomography (CT) scan before (pre-OH) and after surgery (post-OH) and for nonoperated hip (NOH). The study determined an optimal method to avoid retroversion and excessive anterior coverage. Fifteen QOP were performed in 13 patients, ranging in age from 10 to 15 years...
July 3, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28674657/variation-in-the-pelvic-and-pectoral-girdles-of-australian-oligo-miocene-mekosuchine-crocodiles-with-implications-for-locomotion-and-habitus
#15
Michael D Stein, Adam Yates, Suzanne J Hand, Michael Archer
Australian Oligo-Miocene mekosuchines (Crocodylia; Crocodyloidea) display wide diversity in cranial shape and inferred hunting strategies. Terrestrial habitus has been inferred for these distinctive predators. A direct morphological signal for locomotion can be expected in the postcrania, particularly the pelvic and pectoral girdles. Here we describe fossil materials of the girdles, which chart their morphological variation in the subfamily from Eocene through to Middle Miocene. Over this period, both girdles undergo significant morphological changes...
2017: PeerJ
https://www.readbyqxmd.com/read/28673601/femoroacetabular-impingement-causes-osteoarthritis-of-the-hip-by-migration-and-micro-instability-of-the-femoral-head
#16
Henk Eijer, Tom Hogervorst
Femoroacetabular impingement is the condition whereby parts of the proximal femur mechanically collide with the acetabular rim leading to adjacent and contrecoup acetabular damage. Evidence is growing that at least for cam impingement, and perhaps less so for pincer impingement, there is a relation to the development of osteoarthritis. It has been demonstrated that surgery for impingement can improve function and decrease pain. Intuitively, it would then make sense that surgical intervention would prevent further degeneration...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28668804/validation-of-a-knowledge-transfer-tool-according-to-the-omeract-filter-does-web-based-real-time-iterative-calibration-enhance-the-evaluation-of-bone-marrow-lesions-in-hip-osteoarthritis
#17
Jacob L Jaremko, Omar Azmat, Robert G W Lambert, Paul Bird, Ida K Haugen, Lennart Jans, Ulrich Weber, Naomi Winn, Veronika Zubler, Walter P Maksymowych
OBJECTIVE: To assess reliability and feasibility of using a Web-based interface and interactive online calibration tool for magnetic resonance imaging (MRI) scoring of bone marrow lesions (BML) in osteoarthritis (OA), applied to the Hip MR Inflammation Scoring System (HIMRISS). METHODS: Seven readers new to HIMRISS (3 radiologists, 4 rheumatologists) scored coronal short-tau inversion recovery MRI from a hip OA observational study obtained pre- and 8-week post-steroid injection (n = 40 × 2 scans × 2 hips = 160 hips)...
July 1, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28666512/obturator-internus-abscess-with-ipsilateral-septic-hip-arthritis
#18
Sang Hyun Park, Joo Yong Kim, Gyu Min Kong, Sang Myung Roh
Obturator internus muscle (OIM) abscess is an uncommon condition often mistaken for bacterial infection of the hip joint. If the OIM abscess is accompanied by a septic hip, it becomes more difficult to make a diagnosis. Surgical drainage of OIM abscess is difficult because it is located at a deep part of the pelvic cavity. Therefore, intravenous antibiotic therapy or image-guided aspiration were used as a treatment method instead of surgical drainage. When drainage of the abscess was inadequate, prolonged antibiotic treatment was necessary...
November 2016: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28660634/effects-of-phylogeny-and-locomotor-style-on-the-allometry-of-body-mass-and-pelvic-dimensions-in-birds
#19
Matthew V Anten-Houston, Marcello Ruta, D Charles Deeming
The pelvic girdle provides physical support and attachment for the hind limb musculature. In birds there is variability in pelvic morphology across different orders and this has been used as evidence for various types of locomotion. However, the morphological variation of pelvic bones has yet to be studied systematically in birds. Therefore, we investigated basic allometric relationships among female body mass (as a size proxy) and various pelvic measurements in a phylogenetic context. We also examined in detail the inter-relationships among various pelvic measurements...
June 28, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28647622/risk-factors-for-unsuccessful-acetabular-press-fit-fixation-at-primary-total-hip-arthroplasty
#20
Urban Brulc, Vane Antolič, Blaž Mavčič
BACKGROUND: Surgeon at primary total hip arthroplasty sometimes cannot achieve sufficient cementless acetabular press-fit fixation and must resort to other fixation methods. Despite a predominant use of cementless cups, this issue is not fully clarified, therefore we performed a large retrospective study to: 1) identify risk factors related to patient or implant or surgeon for unsuccessful intraoperative press-fit, 2) check for correlation between surgeons' volume of operated cases and the press-fit success rate...
June 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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