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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/27905061/one-third-of-hips-after-periacetabular-osteotomy-survive-30-years-with-good-clinical-results-no-progression-of-arthritis-or-conversion-to-tha
#2
Till Dominic Lerch, Simon Damian Steppacher, Emanuel Francis Liechti, Moritz Tannast, Klaus Arno Siebenrock
BACKGROUND: Since its first description in 1984, periacetabular osteotomy (PAO) has become an accepted treatment for hip dysplasia. The 30-year survivorship with this procedure has not been reported. Because these patients are often very young at the time of surgery, long-term followup and identification of factors associated with poor outcome could help to improve patient selection. QUESTIONS/PURPOSES: Looking at the initial group of patients with hip dysplasia undergoing PAO at the originator's institution, we asked: (1) What is the cumulative 30-year survival rate free from conversion to THA, radiographic progression of osteoarthritis, and/or a Merle d'Aubigné-Postel score < 15? (2) Did hip function improve and pain decrease? (3) Did radiographic osteoarthritis progress? (4) What are the factors associated with one or more of the three endpoints: THA, radiographic progression of osteoarthritis, and/or Merle d'Aubigné-Postel score < 15? METHODS: We retrospectively evaluated the first 63 patients (75 hips) who underwent PAO for hip dysplasia between 1984 and 1987...
November 30, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27885395/hip-instability-treated-with-arthroscopic-capsular-plication
#3
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/27842586/hyaline-cartilage-calcification-of-the-first-metatarsophalangeal-joint-is-associated-with-osteoarthritis-but-independent-of-age-and-bmi
#4
Jan Hubert, Thelonius Hawellek, Sandra Hischke, Jessica Bertrand, Matthias Krause, Klaus Püschel, Wolfgang Rüther, Andreas Niemeier
BACKGROUND: Hyaline cartilage calcification (CC) is associated with osteoarthritis (OA) in hip and knee joints. The first metatarsophalangeal joint (1(st)MTPJ) is frequently affected by OA, but it is unclear if CC occurs in the 1(st)MTPJ. The aim of the present study was to analyze the prevalence of CC of the 1(st)MTPJ in the general population by high-resolution digital contact radiography (DCR) and to determine its association with histological OA severity, age and body mass index (BMI)...
November 15, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27836678/finite-element-analysis-of-mechanical-behavior-of-human-dysplastic-hip-joints-a-systematic-review
#5
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/27830485/lateral-compartment-osteophytes-are-not-associated-with-lateral-compartment-cartilage-degeneration-in-arthritic-varus-knees
#6
Wenzel Waldstein, Maximilian F Kasparek, Martin Faschingbauer, Reinhard Windhager, Friedrich Boettner
BACKGROUND: Progression of arthritis in the lateral compartment is one of the main failure modes of unicompartmental knee arthroplasty (UKA). The decision regarding whether to perform a medial UKA sometimes is made based on whether lateral-compartment osteophytes are visible on plain radiographs obtained before surgery, but it is not clear whether the presence of lateral-compartment osteophytes signifies that the cartilage in the lateral compartment is arthritic. QUESTIONS/PURPOSES: (1) Is the presence of lateral compartment osteophytes associated with biomechanical properties of lateral-compartment cartilage, and (2) are osteophytes in the lateral compartment associated with particular histologic features of cartilage in the lateral compartment? METHODS: Between May 2010 and January 2012, we performed 201 TKAs for varus osteoarthritis confirmed on standardized AP hip-to-ankle standing radiographs...
November 9, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27813260/clinical-safety-and-wear-resistance-of-the-phospholipid-polymer-grafted-highly-cross-linked-polyethylene-liner
#7
Toru Moro, Yoshio Takatori, Sakae Tanaka, Kazuhiko Ishihara, Hiromi Oda, Yoon Taek Kim, Takashige Umeyama, Eisei Fukatani, Hideya Ito, Masayuki Kyomoto, Hirofumi Oshima, Takeyuki Tanaka, Hiroshi Kawaguchi, Kozo Nakamura
To reduce the production of wear particles and subsequent aseptic loosening, we created a human articular cartilage-mimicked surface for a highly cross-linked polyethylene liner, whose surface grafted layer consisted of a biocompatible phospholipid polymer, poly(2-methacryloyloxyethyl phosphorylcholine). Although our previous in vitro findings showed that poly(2-methacryloyloxyethyl phosphorylcholine)-grafted particles were biologically inert and caused no subsequent bone resorptive responses, and poly(2-methacryloyloxyethyl phosphorylcholine) grafting markedly decreased wear in hip joint simulator tests, the clinical safety, and in vivo wear resistance of poly(2-methacryloyloxyethyl phosphorylcholine)-grafted highly cross-linked polyethylene liners remained open to question...
November 3, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27807678/both-3-t-dgemric-and-acetabular-femoral-t2-difference-may-detect-cartilage-damage-at-the-chondrolabral-junction
#8
Tobias Hesper, Evgeny Bulat, Sarah Bixby, Alireza Akhondi-Asl, Onur Afacan, Patricia Miller, Garrett Bowen, Simon Warfield, Young-Jo Kim
BACKGROUND: In addition to case reports of gadolinium-related toxicities, there are increasing theoretical concerns about the use of gadolinium for MR imaging. As a result, there is increasing interest in noncontrast imaging techniques for biochemical cartilage assessment. Among them, T2 mapping holds promise because of its simplicity, but its biophysical interpretation has been controversial. QUESTIONS/PURPOSES: We sought to determine whether (1) 3-T delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) and T2 mapping are both capable of detecting cartilage damage at the chondrolabral junction in patients with femoroacetabular impingement (FAI); and (2) whether there is a correlation between these two techniques for acetabular and femoral head cartilage assessment...
November 2, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27791415/nine-year-results-of-whole-femoral-head-allograft-with-articular-cartilage-for-acetabular-impaction-grafting-in-revision-hip-replacement
#9
E Drampalos, A Fadulelmola, R Mohammed, D Shaw, S Subramanian, K D Jain, J Hodgkinson
INTRODUCTION Acetabular impaction bone grafting with a cemented polyethylene socket aims to reconstitute the bone stock in hip revision. This is an effective but resource intensive and time consuming technique. Usually, the articular cartilage is removed from the femoral head allograft. Our objective was to assess the late results of using the whole femoral head, retaining the cartilage. METHODS Forty-two acetabular revisions using impacted morselised bone graft (retaining the articular cartilage) and a cemented socket were studied retrospectively...
October 28, 2016: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/27782728/automatic-segmentation-of-the-glenohumeral-cartilages-from-magnetic-resonance-images
#10
A Neubert, Z Yang, C Engstrom, Y Xia, M W Strudwick, S S Chandra, J Fripp, S Crozier
PURPOSE: Magnetic resonance (MR) imaging plays a key role in investigating early degenerative disorders and traumatic injuries of the glenohumeral cartilages. Subtle morphometric and biochemical changes of potential relevance to clinical diagnosis, treatment planning, and evaluation can be assessed from measurements derived from in vivo MR segmentation of the cartilages. However, segmentation of the glenohumeral cartilages, using approaches spanning manual to automated methods, is technically challenging, due to their thin, curved structure and overlapping intensities of surrounding tissues...
October 2016: Medical Physics
https://www.readbyqxmd.com/read/27780246/supramolecular-organization-of-collagen-fibrils-in-healthy-and-osteoarthritic-human-knee-and-hip-joint-cartilage
#11
Riccardo Gottardi, Uwe Hansen, Roberto Raiteri, Marko Loparic, Marcel Düggelin, Daniel Mathys, Niklaus F Friederich, Peter Bruckner, Martin Stolz
Cartilage matrix is a composite of discrete, but interacting suprastructures, i.e. cartilage fibers with microfibrillar or network-like aggregates and penetrating extrafibrillar proteoglycan matrix. The biomechanical function of the proteoglycan matrix and the collagen fibers are to absorb compressive and tensional loads, respectively. Here, we are focusing on the suprastructural organization of collagen fibrils and the degradation process of their hierarchical organized fiber architecture studied at high resolution at the authentic location within cartilage...
2016: PloS One
https://www.readbyqxmd.com/read/27762664/limited-immunogenicity-of-human-ips-cell-derived-cartilages
#12
Takeshi Kimura, Akihiro Yamashita, Keiichi Ozono, Noriyuki Tsumaki
Articular cartilage damage does not spontaneously heal and could ultimately result in a loss of joint function. Damaged cartilage can be repaired with cell/tissue sources that are transplanted, however, autologous chondrocytes are limited in number as a cell source. Induced pluripotent stem cells (iPSCs) are a relatively new and abundant cell source and can be made from the patient, but at considerable cost. Because cartilage is immunoprivileged tissue, allogeneic cartilages have been transplanted effectively without matching for human leukocyte antigen (HLA), but are difficult to acquire due to scarcity of donors...
October 20, 2016: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/27755178/genetic-association-studies-in-osteoarthritis-is-it-fairytale
#13
Sophie C Warner, Ana M Valdes
PURPOSE OF REVIEW: Osteoarthritis is a common complex disorder with a strong genetic component. Other identified risk factors such as increasing age and overweight do not fully explain the risk of osteoarthritis. Here, we highlight the main findings from genetic association studies on osteoarthritis to date. RECENT FINDINGS: Currently, genetic association studies have identified 21 independent susceptibility loci for osteoarthritis. Studies have focused on hip, knee and hand osteoarthritis, as well as posttotal joint replacement and minimum joint space width, a proxy for cartilage thickness...
January 2017: Current Opinion in Rheumatology
https://www.readbyqxmd.com/read/27743631/characterising-the-effects-of-in-vitro-mechanical-stimulation-on-morphogenesis-of-developing-limb-explants
#14
Vikesh V Chandaria, James McGinty, Niamh C Nowlan
Mechanical forces due to fetal movements play an important role in joint shape morphogenesis, and abnormalities of the joints relating to abnormal fetal movements can have long-term health implications. While mechanical stimulation during development has been shown to be important for joint shape, the relationship between the quantity of mechanical stimulation and the growth and shape change of developing cartilage has not been quantified. In this study, we culture embryonic chick limb explants in vitro in order to reveal how the magnitude of applied movement affects key aspects of the developing joint shape...
October 12, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27740684/trans-foveal-approach-for-curettage-and-bone-grafting-of-a-giant-cell-tumour-in-the-femoral-head
#15
Hannes A Rüdiger, Krzystof Piasecki, Fabio Becce, Stéphane Cherix
BACKGROUND: Surgical access to benign neoplastic lesions of the femoral head are associated with significant morbidity, including contamination of intra-osseous access tracks, articular cartilage lesions, avascular bone necrosis or tumour recurrence due to incomplete curettage. CASE PRESENTATION: We present a case of a 20-year-old female with a giant cell tumour in the femoral head, which was treated with curettage through a trans-foveal approach and bone grafting...
September 22, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27726746/postoperative-imaging-in-the-setting-of-hip-preservation-surgery
#16
Megan K Mills, Colin D Strickland, Mary K Jesse, Peter A Lowry, Omer Mei-Dan, Jonathan A Flug
Osteoarthritis of the hip remains a prevalent disease condition that influences ever-changing treatment options. Procedures performed to correct anatomic variations, and, in turn, prevent or slow the progression of osteoarthritis, are aptly referred to as types of hip preservation surgery (HPS). Conditions that predispose individuals to femoroacetabular impingement (FAI), including pincer- and cam-type morphology, and hip dysplasia are specifically targeted in HPS. Common surgical interventions include acetabuloplasty, osteochondroplasty, periacetabular osteotomy (PAO), and derotational femoral osteotomy (DFO)...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27726744/sports-injuries-about-the-hip-what-the-radiologist-should-know
#17
Tarek M Hegazi, Jeffrey A Belair, Eoghan J McCarthy, Johannes B Roedl, William B Morrison
Injuries of the hip and surrounding structures represent a complex and commonly encountered scenario in athletes, with improper diagnosis serving as a cause of delayed return to play or progression to a more serious injury. As such, radiologists play an essential role in guiding management of athletic injuries. Familiarity with hip anatomy and the advantages and limitations of various imaging modalities is of paramount importance for accurate and timely diagnosis. Magnetic resonance (MR) imaging is often the modality of choice for evaluating many of the injuries discussed, although preliminary evaluation with conventional radiography and use of other imaging modalities such as ultrasonography (US), computed tomography, and bone scintigraphy may be supplementary or preferred in certain situations...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27718121/what-are-the-risk-factors-for-revision-surgery-after-hip-arthroscopy-for-femoroacetabular-impingement-at-7-year-followup
#18
Pascal Cyrill Haefeli, Christoph Emanuel Albers, Simon Damian Steppacher, Moritz Tannast, Lorenz Büchler
BACKGROUND: In recent years, surgical treatment of symptomatic femoroacetabular impingement (FAI) has been increasingly performed using arthroscopy. Bony pathomorphologies and damage to the labrum as well as cartilage defects can be addressed with comparable results to open surgery with overall less surgery-related complications. Despite the increasing importance of hip arthroscopy, however, reports on midterm clinical and radiographic outcomes and comparison to open surgical hip dislocation are scarce...
October 7, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27716351/does-the-optimal-position-of-the-acetabular-fragment-should-be-within-the-radiological-normal-range-for-all-developmental-dysplasia-of-the-hip-a-patient-specific-finite-element-analysis
#19
Xuyi Wang, Jianping Peng, De Li, Linlin Zhang, Hui Wang, Leisheng Jiang, Xiaodong Chen
BACKGROUND: The success of Bernese periacetabular osteotomy depends significantly on how extent the acetabular fragment can be corrected to its optimal position. This study was undertaken to investigate whether correcting the acetabular fragment into the so-called radiological "normal" range is the best choice for all developmental dysplasia of the hip with different severities of dysplasia from the biomechanical view? If not, is there any correlation between the biomechanically optimal position of the acetabular fragment and the severity of dysplasia? METHODS: Four finite element models with different severities of dysplasia were developed...
October 4, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27709422/how-does-the-dgemric-index-change-after-surgical-treatment-for-fai-a-prospective-controlled-study-preliminary-results
#20
Florian Schmaranzer, Pascal C Haefeli, Markus S Hanke, Emanuel F Liechti, Stefan F Werlen, Klaus A Siebenrock, Moritz Tannast
BACKGROUND: Delayed gadolinium-enhanced MRI of cartilage (dGEMRIC) allows an objective, noninvasive, and longitudinal quantification of biochemical cartilage properties. Although dGEMRIC has been used to monitor the course of cartilage degeneration after periacetabular osteotomy (PAO) for correction of hip dysplasia, such longitudinal data are currently lacking for femoroacetabular impingement (FAI). QUESTIONS/PURPOSES: (1) How does the mean acetabular and femoral dGEMRIC index change after surgery for FAI at 1-year followup compared with a similar group of patients with FAI treated without surgery? (2) Does the regional distribution of the acetabular and femoral dGEMRIC index change for the two groups over time? (3) Is there a correlation between the baseline dGEMRIC index and the change of patient-reported outcome measures (PROMs) at 1-year followup? (4) Among those treated surgically, can dGEMRIC indices distinguish between intact and degenerated cartilage? METHODS: We performed a prospective, comparative, nonrandomized, longitudinal study...
October 5, 2016: Clinical Orthopaedics and related Research
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