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https://www.readbyqxmd.com/read/27911456/mid-term-results-of-recap-magnum-taperloc-metal-on-metal-total-hip-arthroplasty-with-mean-follow-up-of-7-1-years
#1
Antonios A Koutalos, Aristotelis Kourtis, Ian C Clarke, Evert J Smith
INTRODUCTION: Despite enthusiasm for metal-on-metal bearings, disappointing short- to mid-term outcomes has all but halted the use of this bearing articulation. This review presents mid-term results for the ReCap Magnum total hip replacement. PATIENTS AND METHODS: This prospective study evaluated 79 ReCap/Magnum/Taperloc total hip replacements with mean follow-up of 7.1 (range 3.7-9.2) years. 43 were female and 36 male. Metal ions were measured and radiographic measurement included a 'margin of safety' angle to quantify risk of edge loading...
December 2, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27909118/the-relative-contribution-of-the-medial-and-lateral-femoral-circumflex-arteries-to-the-vascularity-of-the-head-and-neck-of-the-femur-a-quantitative-mri-based-assessment
#2
D C Dewar, L E Lazaro, C E Klinger, P K Sculco, J P Dyke, A Y Ni, D L Helfet, D G Lorich
AIMS: We aimed to quantify the relative contributions of the medial femoral circumflex artery (MFCA) and lateral femoral circumflex artery (LFCA) to the arterial supply of the head and neck of the femur. MATERIALS AND METHODS: We acquired ten cadaveric pelvises. In each of these, one hip was randomly assigned as experimental and the other as a matched control. The MFCA and LFCA were cannulated bilaterally. The hips were designated LFCA-experimental or MFCA-experimental and underwent quantitative MRI using a 2 mm slice thickness before and after injection of MRI-contrast diluted 3:1 with saline (15 ml Gd-DTPA) into either the LFCA or MFCA...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27904218/core-decompression-or-quadratus-femoris-muscle-pedicle-bone-grafting-for-nontraumatic-osteonecrosis-of-the-femoral-head-a-randomized-control-study
#3
Deqiang Li, Ming Li, Peilai Liu, Yuankai Zhang, Liang Ma, Fei Xu
BACKGROUND: The traditional management for osteonecrosis of the femoral head (ONFH) includes core decompression (CD) and quadratus femoris muscle pedicle bone graft (QF-MPBG). The aim of this study was to investigate the effects of CD and QF-MPBG on the patients with nontraumatic ONFH in an early stage. MATERIALS AND METHODS: 39 patients (47 hips) with ONFH in an early stage (Ficat Stage I or II) were randomly divided into two groups according to random number table method...
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27903592/alpha-angle-measurements-in-healthy-adult-volunteers-vary-depending-on-the-mri-plane-acquisition-used
#4
Mohammad Golfam, Luigia A Di Primio, Paul E Beaulé, Kalesha Hack, Mark E Schweitzer
BACKGROUND: It has been shown that cam deformities are located at a more anterosuperior location than was previously described. PURPOSE: To establish, in a large group of asymptomatic participants, the normative range of the alpha angle in the anterosuperior location in both the oblique axial and radial views of magnetic resonance imaging (MRI). STUDY DESIGN: Cross-sectional study; Level of evidence, 3. METHODS: In 197 asymptomatic participants (394 asymptomatic hips) with a mean age of 29...
November 9, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27903506/is-the-hip-capsule-thicker-in-diseased-hips
#5
K S Rakhra, A A Bonura, R Nairn, M E Schweitzer, N M Kolanko, P E Beaule
OBJECTIVES: The purpose of this study was to compare the thickness of the hip capsule in patients with surgical hip disease, either with cam-femoroacetabular impingement (FAI) or non-FAI hip pathology, with that of asymptomatic control hips. METHODS: A total of 56 hips in 55 patients underwent a 3Tesla MRI of the hip. These included 40 patients with 41 hips with arthroscopically proven hip disease (16 with cam-FAI; nine men, seven women; mean age 39 years, 22 to 58) and 25 with non-FAI chondrolabral pathology (four men, 21 women; mean age 40 years, 18 to 63) as well as 15 asymptomatic volunteers, whose hips served as controls (ten men, five women; mean age 62 years, 33 to 77)...
November 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27869634/goals-and-challenges-of-identifying-asymptomatic-pseudotumors-in-patients-treated-with-total-hip-arthroplasty-commentary-on-an-article-by-young-min-kwon-md-phd-et-al-asymptomatic-pseudotumors-in-patients-with-taper-corrosion-of-a-dual-taper-modular-femoral
#6
https://www.readbyqxmd.com/read/27869625/asymptomatic-pseudotumors-in-patients-with-taper-corrosion-of-a-dual-taper-modular-femoral-stem-mars-mri-and-metal-ion-study
#7
Young-Min Kwon, Sariah Khormaee, Ming Han Lincoln Liow, Tsung-Yuan Tsai, Andrew A Freiberg, Harry E Rubash
BACKGROUND: Modularity in total hip arthroplasty facilitates intraoperative restoration of patient anatomy. Although dual-taper modular total hip arthroplasty offers potential advantages for optimizing the hip center of rotation, it has been associated with modular taper corrosion. This corrosion has led to adverse local tissue reactions (pseudotumors) at the neck-stem junction and elevated metal-ion levels. However, the occurrence of taper-corrosion-related pseudotumors in patients who remain asymptomatic following total hip arthroplasty with a dual-taper modular femoral stem remains largely unknown...
October 19, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27866812/a-case-report-of-infectious-sacroiliitis-in-an-adult-presenting-to-the-emergency-department-with-inability-to-walk
#8
Douglas Brtalik, Manoj Pariyadath
BACKGROUND: Infectious sacroiliitis (ISI) is an uncommon cause of back and hip pain in which the sacroiliac joint, either unilateral or bilateral, is inflamed from an infectious source. Historically, this has been an easily missed diagnosis due to nonspecific presenting symptoms along with subtle nondistinguishable laboratory abnormalities. CASE REPORT: We describe an injection drug user presenting with right-sided ISI who presented with hip and back pain and inability to walk...
November 17, 2016: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27866217/osteonecrosis-of-the-jaw-onj-and-atypical-femoral-fracture-aff-in-an-osteoporotic-patient-chronically-treated-with-bisphosphonates
#9
A Sánchez, R Blanco
The aim of the study is to report the rare association of two complications of long-term treatment of osteoporosis with bisphosphonates in the same Caucasian elderly patient. A female patient of Italian descent, age 87 years, consulted in February 2013. She had a history of osteoporosis and had taken alendronate weekly for 7 years (1999-2006). Due to low back pain, an orthopedist had indicated i.v. zoledronic acid, 5 mg/year for 3 years (2006-2008). She received occasional supplements of ergocalciferol...
November 20, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/27864891/3d-mri-quantification-of-femoral-head-deformity-in-legg-calv%C3%A3-perthes-disease
#10
Karen D Standefer, Molly Dempsey, ChanHee Jo, Harry K W Kim
The purpose of this study was to quantify femoral head deformity in patients with Legg-Calvé-Perthes disease (LCPD) using a novel three dimensional (3D) magnetic resonance imaging (MRI) reconstruction and volume based analysis. Bilateral femoral heads of 17 patients (mean age 9.9 ± 2.0 years; 12 boys, 5 girls) with LCPD were scanned 1-2 times (n= 33 LCPD heads, 20 normal heads) using a 1.5T MRI scanner. Fourteen patients had unilateral and three had bilateral LCPD with 5 hips in the Waldenström initial stage, 9 in the fragmentation stage, 14 in the reossification stage, and 5 in the healed stage...
November 19, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27861589/role-of-plasma-clusterin-in-alzheimer-s-disease-a-pilot-study-in-a-tertiary-hospital-in-northern-india
#11
Venugopalan Y Vishnu, Manish Modi, Sandeep Sharma, Manju Mohanty, Manoj Kumar Goyal, Vivek Lal, Niranjan Khandelwal, Bhagwant Rai Mittal, Sudesh Prabhakar
OBJECTIVE: To evaluate the role of plasma clusterin in Alzheimer's disease (AD). BACKGROUND: Plasma clusterin is a promising biomarker as various studies have shown it to be associated with AD. But other studies have shown that plasma clusterin levels were not related to Alzheimer's disease or presymptomatic AD. Hence the diagnostic value of plasma clusterin is still not conclusive. METHODS: Neuropsychological assessment, MRI brain, FDG-PET brain and CSF biomarkers of AD were used for establishing the diagnosis of MCI, AD or Vascular dementia...
2016: PloS One
https://www.readbyqxmd.com/read/27852906/assessment-of-femoral-head-revascularization-in-legg-calv%C3%A3-perthes-disease-using-serial-perfusion-mri
#12
Harry K W Kim, Jamie Burgess, Alec Thoveson, Paul Gudmundsson, Molly Dempsey, Chan-Hee Jo
BACKGROUND: Legg-Calvé-Perthes disease is a juvenile form of osteonecrosis of the femoral head. The purpose of this study was to use serial perfusion magnetic resonance imaging (MRI) to determine the pattern and rate of revascularization of the femoral heads of patients with the active stage of Legg-Calvé-Perthes disease. METHODS: We performed a prospective study of 29 patients (30 hips) with a mean age (and standard deviation) of 8.4 ± 1.9 years who were diagnosed with Waldenström Stage-1 or 2 Legg-Calvé-Perthes disease...
November 16, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27846909/a-retrospective-analysis-on-the-correlation-between-hip-pain-physical-examination-findings-and-alpha-angle-on-mr-images
#13
Olcay Guler, Mehmet Isyar, Dilek Karataş, Tugrul Ormeci, Halis Cerci, Mahir Mahirogulları
BACKGROUND: We aimed to search whether alpha angle, a radiological clue used in the diagnosis of femoroacetabular impingement, is correlated with the presence of hip pain, internal rotation angle, and impingement test results on hip impingement patients (CAM type). METHODS: Medical records of 334 patients (156 women, 178 men) with an average age of 33.8 ± 8.4 (range 20-50) years were retrospectively studied for the alpha angle of the hip measured on magnetic resonance images (MRI)...
November 15, 2016: Journal of Orthopaedic Surgery and Research
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
#14
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/27821101/factors-associated-with-symptomatic-pseudotumors-following-metal-on-metal-total-hip-arthroplasty
#15
Masahiro Hasegawa, Yohei Naito, Toshio Yamaguchi, Shinichi Miyazaki, Hiroki Wakabayashi, Akihiro Sudo
BACKGROUND: Pseudotumors associated with metal-on-metal hips can be symptomatic or asymptomatic. The purpose of this study was to identify the characteristics of pseudotumors associated with pain. METHODS: A total of 239 large-diameter, metal-on-metal total hip arthroplasties (THAs) were performed in 222 patients. Screening for pseudotumors was performed using magnetic resonance imaging (MRI) in all patients who underwent metal-on-metal THA, and 57 patients with 62 affected hips showed pseudotumors...
November 7, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27816505/advances-in-imaging-approaches-to-fracture-risk-evaluation
#16
REVIEW
Mary Kate Manhard, Jeffry S Nyman, Mark D Does
Fragility fractures are a growing problem worldwide, and current methods for diagnosing osteoporosis do not always identify individuals who require treatment to prevent a fracture and may misidentify those not a risk. Traditionally, fracture risk is assessed using dual-energy X-ray absorptiometry, which provides measurements of areal bone mineral density at sites prone to fracture. Recent advances in imaging show promise in adding new information that could improve the prediction of fracture risk in the clinic...
October 17, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27807678/both-3-t-dgemric-and-acetabular-femoral-t2-difference-may-detect-cartilage-damage-at-the-chondrolabral-junction
#17
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/27800188/arthroscopic-treatment-for-primary-septic-arthritis-of-the-hip-in-adults
#18
Jörg Hartmut Schröder, David Krüger, Carsten Perka, Martin Hufeland
Purpose. Primary septic arthritis is a rare differential diagnosis of acute hip pain in adults. Inspired by the success of all-arthroscopic treatment in pediatric patients, we developed a diagnostic and surgical pathway for our adult patients. Methods. Seven patients, average age 44 ± 13.7 years with acute hip pain since 4.4 ± 2.9 days in the average, were included. Septic arthritis was confirmed by joint aspiration and dissemination was excluded by MRI and standard radiographs. Surgical treatment consisted of immediate arthroscopic lavage using 4 portals for debridement, high-volume irrigation, partial synovectomy, and drainage...
2016: Advances in Orthopedics
https://www.readbyqxmd.com/read/27776907/sensitivity-and-specificity-of-metal-ion-levels-in-predicting-pseudotumors-due-to-taper-corrosion-in-patients-with-dual-taper-modular-total-hip-arthroplasty
#19
Young-Min Kwon, Tsung-Yuan Tsai, William A Leone, Ming Han Lincoln Liow
BACKGROUND: Currently, no serum metal ion threshold exists to identify adverse tissue reactions in total hip arthroplasty (THA) patients with taper corrosion. Our study aims to investigate the sensitivity and specificity of serum metal ions in detecting taper corrosion related pseudotumors in patients with dual taper modular THA. METHODS: A total of 148 patients with dual taper modular THA were investigated: (1) 90 patients with pseudotumors detected with metal artifact reduction sequence-magnetic resonance imaging (MARS-MRI) and (2) 58 patients without pseudotumors on MARS-MRI...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27771042/the-sensitivity-of-ct-scans-in-diagnosing-occult-femoral-neck-fractures
#20
Z Sadozai, R Davies, J Warner
Non-displaced hip fractures can be difficult to diagnose on plain film radiographs. When there is ongoing clinical suspicion of an occult fracture, further imaging is obtained. We investigated the sensitivity of computed tomography (CT) scans in detecting these fractures and the delays to surgery that three-dimensional imaging causes. We identified 78 CT scans performed for possible hip fractures over the past 3 years with the presence and absence of a fracture recorded. Based on subsequent imaging, the accuracy of CT scans was determined...
December 2016: Injury
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