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Hip MRI

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https://www.readbyqxmd.com/read/28922141/towards-an-in-plane-methodology-to-track-breast-lesions-by-using-mammograms-and-patient-specific-finite-element-simulations
#1
Andres Lapuebla-Ferri, Jose Cegoñino-Banzo, Antonio-Jose Jimenez-Mocholi, Amaya Perez Del Palomar
In breast cancer screening or diagnosis, it is usual to combine different images in order to locate a lesion as accurately as possible. These images are generated by using a single or several imaging techniques. As X-ray based mammography is used widespread, a breast lesion is located in the same plane of the image (mammogram), but tracking of a breast lesion across mammograms corresponding to different views is a daring task for medical physicians. According to this, simulation tools and methodologies that use patient-specific numerical models can facilitate the task of fusing information from different images...
September 18, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28918594/the-association-of-knee-structural-pathology-with-pain-at-the-knee-is-modified-by-pain-at-other-sites-in-those-with-knee-osteoarthritis
#2
Feng Pan, Jing Tian, Dawn Aitken, Flavia Cicuttini, Tania Winzenberg, Graeme Jones
The objective of this study was to investigate the associations of knee structural abnormalities with different patterns of pain. A total of 891 participants (average age 63 years; range 50 to 80 years) participated in this study. Presence of pain at the neck, back, hands, shoulders, hips, knees, and feet was assessed by questionnaire. Participants were categorized as having no pain at any site (no pain), pain only at the knee (KP), pain at other sites but not the knee (OP), and pain at the knee and other sites (KOP)...
September 16, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28918517/detecting-cam-type-deformities-on-plain-radiographs-what-is-the-optimal-lateral-view
#3
Christian Hipfl, Markus Titz, Catharina Chiari, Veronika Schöpf, Franz Kainberger, Reinhard Windhager, Stephan Domayer
PURPOSE: Radial magnetic resonance imaging (MRI) is the most accurate diagnostic tool in assessing cam-type femoroacetabular impingement. Plain radiographs, however, are useful for the initial diagnosis in the daily practice and there is still debate regarding the optimal lateral view. The purpose of this study was to investigate the reliability of detecting cam deformities using the frog-leg view or the 45° Dunn view by comparison with radial MRI. MATERIAL: 66 consecutive hips with plain radiographs (36 with AP and frog-leg views, 30 with AP and 45° Dunn views) and radial MRI were assessed...
September 16, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28914664/three-dimensional-mri-analyses-of-prereduced-femoral-head-sphericity-in-patients-with-developmental-dysplasia-of-the-hip-after-pavlik-harness-failure
#4
Yuta Tsukagoshi, Hiroshi Kamada, Ryoko Takeuchi, Shogo Nakagawa, Yohei Tomaru, Makoto Kamegaya, Tomofumi Nishino, Yoshikazu Okamoto, Hajime Mishima, Masashi Yamazaki
We used three-dimensional (3D) MRI to assess the sphericity of the cartilaginous femoral head in developmental dysplasia of the hip. We assessed 21 children using 3D-MRI. The smallest sphere including the femoral head cartilage was drawn, the diameter was measured, and the center of the sphere was defined. We compared the diameters of the femoral heads between unaffected and diseased sides. The diameter of the affected side was smaller, with flattening at the posteromedial area and proximoposterior areas. 3D-MRI showed that the shape of the dislocated femoral head was aspherical with focal growth failure...
September 13, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28904633/an-improved-method-for-measuring-hip-abduction-in-spica-after-surgical-reduction-for-developmental-dysplasia-of-the-hip
#5
C J DeFrancesco, T J Blumberg, N A Chauvin, W N Sankar
PURPOSE: Excessive in-spica abduction is a risk factor for oste-onecrosis after surgical reduction for developmental dysplasia of the hip (DDH). The traditional method for radiographically measuring hip abduction using axial imaging does not reflect the true angle, which usually lies in an oblique plane. The purpose of this study was to describe a novel method for measuring true hip position using advanced imaging. METHODS: A trigonometric model was derived to define hip position based upon the femoral axis angular deviation from midline as measured on axial and coronal sequences of MRI studies...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28893678/hip-inflammation-mri-scoring-system-himriss-to-predict-response-to-hyaluronic-acid-injection-in-hip-osteoarthritis
#6
Nicolas Deseyne, Thierry Conrozier, Henri Lellouche, Bernard Maillet, Ulrich Weber, Jacob L Jaremko, Joel Paschke, Jonathan Epstein, Walter P Maksymowych, Damien Loeuille
OBJECTIVE: To assess predictors of response, according to hip MRI inflammatory scoring system (HIMRISS), in a sample of patients with hip osteoarthritis (OA) treated by hyaluronic acid (HA) injection. METHOD: 60 patients with hip OA were included. Clinical outcomes were assessed at baseline and three months after HA injection by WOMAC. On hip MRI performed before HA injection, bone marrow lesion (BML) and synovitis were assessed by HIMRISS by four readers. The inter-reader reliability of HIMRISS was for HIMRISS total, acetabular BML, femoral BML and synovitis-effusion respectively 0...
September 8, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28885649/l5-radiculopathy-secondary-to-migration-of-a-revision-stemmed-acetabular-cup
#7
Jesús Moreta, Oscar L Casado-Verdugo, Fernando Labayru
INTRODUCTION: Stemmed acetabular components are used in patients undergoing revision total hip arthroplasty in cases with major acetabular defects or pelvic discontinuity. Conflicting results relating to the survival of the component, and complication rates are reported in the literature. We present a case of L5 radiculopathy secondary to proximal migration of this device. CASE DESCRIPTION: A 79-year-old man was admitted to our department in 2012 with increasing pain and paresthesias, initially diagnosed as left L5 radiculopathy...
September 2, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28869431/a-method-to-investigate-the-biomechanical-alterations-in-perthes-disease-by-hip-joint-contact-modeling
#8
Remel Alingalan Salmingo, Tina Lercke Skytte, Marie Sand Traberg, Lars Pilgaard Mikkelsen, Kaj-Åge Henneberg, Christian Wong
Perthes' disease is a destructive hip joint disorder characterized by malformation of the femoral head in young children. While the morphological changes have been widely studied, the biomechanical effects of these changes still need to be further elucidated. The objective of this study was to develop a method to investigate the biomechanical alterations in Perthes' disease by finite element (FE) contact modeling using MRI. The MRI data of a unilateral Perthes' case was obtained to develop the three-dimensional FE model of the hip joint...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28868301/dynamic-lumbosacral-magnetic-resonance-imaging-in-a-dog-with-tethered-cord-syndrome-with-a-tight-filum-terminale
#9
Steven De Decker, Vicky Watts, David M Neilson
A 1-year and 11-month- old English Cocker Spaniel was evaluated for clinical signs of progressive right pelvic limb lameness and urinary incontinence. Neurological examination was suggestive of a lesion localized to the L4-S3 spinal cord segments. No abnormalities were seen on magnetic resonance imaging (MRI) performed in the dog in dorsal recumbency and the hips in a neutral position and the conus medullaris ended halfway the vertebral body of L7. An MRI of the hips in extended and flexed positions demonstrated minimal displacement of the conus medullaris in the cranial and caudal directions, respectively...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28853599/pyomyositis-of-the-pectineus-muscle-in-an-adolescent-male
#10
J Hiddema, S Hassan, N Mangat, N Siddiqui
The 'irritable hip' continues to pose a challenge for clinicians. Even with predictive clinical algorithms, decision making can be difficult. Emergency treatment is required if septic arthritis is suspected. Other differential diagnoses such as transient synovitis, pyomyositis of the pelvic girdle muscles and osteomyelitis must be considered in order to help guide appropriate investigations and allow early treatment. We report the case of a 13-year-old boy presenting to our institution with an acutely painful left hip but still able to weight bear...
September 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28844125/stem-cell-therapy-for-avascular-necrosis-of-femoral-head-in-sickle-cell-disease-report-of-11-cases-and-review-of-literature
#11
Mir Sadat-Ali, Md Q Azam, Ezzat M Elshabouri, Ahmad M Tantawy, Sadananda Acharya
Background and Objective: Sickle cell disease (SCD) is quite common in eastern Saudi Arabia and Avascular necrosis of femoral head (ANFH) occurs in 30% of the young patients leading to early joint arthroplasty. This study was conducted to assess the benefits of injection of osteoblasts in the avascular lesions of the head of femur. Patients and Methods: A preset technique was used, 10 CC of bone marrow aspiration was performed under local anesthesia and aseptic technique...
August 31, 2017: International Journal of Stem Cells
https://www.readbyqxmd.com/read/28840285/osseous-spurs-at-the-fovea-capitis-femoris-a-frequent-finding-in-asymptomatic-volunteers
#12
Susanne Bensler, Christoph A Agten, Christian W A Pfirrmann, Reto Sutter
OBJECTIVE: To investigate the different morphologic types of the fovea capitis femoris and the spectrum of osseous spurs/osteophytes of the fovea in asymptomatic volunteers and patients with hip osteoarthritis. MATERIAL AND METHODS: Sixty-five patients (mean age 63.6 years) with radiographically confirmed osteoarthritis of the hip and 59 asymptomatic healthy volunteers (mean age 33.9 years) underwent non-contrast MRI of the hip joint. Two radiologists independently evaluated all images...
August 24, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28836028/prevalence-and-clinical-outcomes-of-hip-fractures-and-subchondral-insufficiency-fractures-of-the-femoral-head-in-patients-with-tumour-induced-osteomalacia
#13
Hiroshi Kobayashi, Nobuaki Ito, Toru Akiyama, Tomotake Okuma, Yuka Kinoshita, Masachika Ikegami, Yusuke Shinoda, Seiji Fukumoto, Sakae Tanaka, Hirotaka Kawano
PURPOSE: Tumour-induced osteomalacia (TIO) is a rare paraneoplastic syndrome usually caused by phosphaturic mesenchymal tumours, leading to great distress due to bone pain and affecting quality of life (QoL). This study aimed to investigate the prevalence and clinical outcomes of hip fractures and subchondral insufficiency fractures (SIF) of the femoral head. METHODS: Twelve TIO patients were treated between January 2000 and December 2016 at our hospital. All underwent surgery for the tumour causing TIO, and complete removal of the tumour was accomplished in nine of 12 cases...
August 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28833407/fully-phase-encoded-mri-near-metallic-implants-using-ultrashort-echo-times-and-broadband-excitation
#14
Curtis N Wiens, Nathan S Artz, Hyungseok Jang, Alan B McMillan, Kevin M Koch, Scott B Reeder
PURPOSE: To develop a fully phase-encoded MRI method for distortion-free imaging near metallic implants, in clinically feasible acquisition times. THEORY AND METHODS: An accelerated 3D fully phase-encoded acquisition with broadband excitation and ultrashort echo times is presented, which uses a broadband radiofrequency pulse to excite the entire off-resonance induced by the metallic implant. Furthermore, fully phase-encoded imaging is used to prevent distortions caused by frequency encoding, and to obtain ultrashort echo times for rapidly decaying signal...
August 21, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28828130/persistent-sciatic-artery-found-incidentally-on-hip-mri-report-of-4-cases
#15
Ângela Massignan, Felipe Victora Wagner, Pedro Toniolo de Carvalho, Alexandre da Silveira Cima
The persistent sciatic artery is a rare anatomical variant, representing the persistence of the sciatic artery in adult life that is responsible for the major blood supply to the lower limb in early embryologic development. Such persistence may be bilateral and can remain asymptomatic for many years. However, aneurysmal degeneration has been described as a complication of the persistent sciatic artery, which may cause critical limb ischemia resulting from thrombosis or embolization of aneurysm thrombus. Digital subtraction angiography, Doppler ultrasound, computed tomography angiography and magnetic resonance angiography are the most frequently used diagnostic tools to detect, classify and determine the presence of complications of a PSA...
September 2017: Radiology case reports
https://www.readbyqxmd.com/read/28821761/enhanced-therapeutic-effects-of-human-ips-cell-derived-cardiomyocyte-by-combined-cell-sheets-with-omental-flap-technique-in-porcine-ischemic-cardiomyopathy-model
#16
Masashi Kawamura, Shigeru Miyagawa, Satsuki Fukushima, Atsuhiro Saito, Kenji Miki, Shunsuke Funakoshi, Yoshinori Yoshida, Shinya Yamanaka, Tatsuya Shimizu, Teruo Okano, Takashi Daimon, Koichi Toda, Yoshiki Sawa
Transplant of human induced pluripotent stem cell derived cardiomyocytes (hiPS-CMs) cell-sheet is a promising approach for treating ischemic cardiomyopathy (ICM). However, poor blood supply to the transplanted cell-sheet is a concern related to the effectiveness and durability of the treatment. Herein, we hypothesized that the combined the omentum flap might enhance survival and the therapeutic effects of hiPS-CM cell-sheet transplant for ICM treatment. Treatment by Wnt signaling molecules in hiPS cells produced hiPS-CMs, which were magnetically labeled by superparamagnetic iron oxide (SPIO), followed by culture in the thermoresponsive dishes to generate hiPS-CMs cell-sheets...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28820271/cam-deformities-and-limited-hip-range-of-motion-are-associated-with-early-osteoarthritic-changes-in-adolescent-athletes-a-prospective-matched-cohort-study
#17
Cody C Wyles, Germán A Norambuena, Benjamin M Howe, Dirk R Larson, Bruce A Levy, Brandon J Yuan, Robert T Trousdale, Rafael J Sierra
BACKGROUND: The natural history of femoroacetabular impingement (FAI) remains incompletely understood. In particular, there is limited documentation of joint damage in adolescent patients with limited range of motion (LROM) of the hip, which is commonly associated with FAI. PURPOSE: To evaluate changes in magnetic resonance imaging (MRI), radiographs, and clinical examinations over 5 years in a group of athletes from a wide variety of sports with asymptomatic LROM of the hip compared with matched controls...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28816897/surgical-correction-of-cam-deformity-in-association-with-femoroacetabular-impingement-and-its-impact-on-the-degenerative-process-within-the-hip-joint
#18
Paul E Beaulé, Andrew D Speirs, Helen Anwander, Gerd Melkus, Kawan Rakhra, Hanspeter Frei, Mario Lamontagne
BACKGROUND: Cam morphology in association with femoroacetabular impingement (FAI) is a recognized cause of hip pain and cartilage damage and proposed as a leading cause of arthritis. The purpose of this study was to analyze the functional and biomechanical effects of the surgical correction of the cam deformity on the degenerative process associated with FAI. METHODS: Ten male patients with a mean age of 34.3 years (range, 23.1 to 46.5 years) and a mean body mass index (and standard deviation) of 26...
August 16, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28809641/cementless-total-hip-arthroplasty-in-primary-myelofibrosis-a-case-report
#19
S Brodt, E Eigendorff, G Matziolis
There is a great deal of data available, in part contradictory, on the best fixation technique to use for total hip arthroplasty (THA) in hip osteoarthritis. Both the cementless and the cemented versions offer excellent long-term outcomes - if the respective technique is applied correctly. However, as far as we know, no recommendation has been made regarding cemented vs. cementless THA in primary myelofibrosis. The case described here concerns a very active 76-year-old patient with primary myelofibrosis. This is a rare hematological disease...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28798039/physical-activity-during-adolescence-and-the-development-of-cam-morphology-a-cross-sectional-cohort-study-of-210-individuals
#20
Antony Palmer, Scott Fernquest, Mo Gimpel, Richard Birchall, Andrew Judge, John Broomfield, Julia Newton, Mark Wotherspoon, Andrew Carr, Sion Glyn-Jones
INTRODUCTION: Cam morphology is a strong risk factor for the development of hip pain and osteoarthritis. It is increasingly thought to develop in association with intense physical activity during youth; however, the aetiology remains uncertain. The study aim was to characterise the effect of physical activity on morphological hip development during adolescence. METHODS: Cross-sectional study of individuals aged 9-18 years recruited from Southampton Football Club Academy (103 male) with an age-matched control population (52 males and 55 females)...
August 10, 2017: British Journal of Sports Medicine
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