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Femoral head avascular necrosis

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https://www.readbyqxmd.com/read/29131775/traumatic-hip-dislocation-what-the-orthopedic-surgeon-wants-to-know
#1
Jacob C Mandell, Richard A Marshall, Michael J Weaver, Mitchel B Harris, Aaron D Sodickson, Bharti Khurana
Hip dislocation is an important orthopedic emergency usually seen in young patients who have experienced high-energy trauma, often resulting in significant long-term morbidity. Rapid identification and reduction is critical, as prolonged dislocation increases the risk of developing avascular necrosis of the femoral head, and posttraumatic osteoarthritis is a common complication, even in the absence of associated fractures. Identification and timely management of hip dislocation are highly dependent on imaging, both at presentation and after attempted reduction...
November 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29126401/dyslipidaemia-for-patients-with-low-energy-femoral-neck-fractures-after-the-treatment-of-cancellous-screws-a-retrospective-study-with-a-3-year-minimum-follow-up
#2
Chi Zhang, Xiaoxiao Zhu, Genwang Pei, Ping Xu, Xianshang Zeng, Lili Zhang, Nan Zhang, Dan Zeng, Lei Cao, Weiguang Yu, Xinchao Zhang
BACKGROUND: Avascular necrosis of the femoral head (AVNFH) occurs infrequently following femoral neck fracture. The association between AVNFH and dyslipidaemia remains controversial. Although major risk factors for AVNFH have been proposed, most of them remain under discussion. Our purpose herein was to evaluate the association between dyslipidaemia and AVNFH following low-energy femoral neck fractures treated with cancellous screws in elderly patients in our tertiary care centre. METHODS: Four hundred and seventy-two consecutive patients (472 hips) with low-energy femoral neck fractures were identified and treated with cancellous screws from July 2007 to April 2013...
November 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29117211/the-treatment-of-femoral-neck-fracture-using-vegf-loaded-nanographene-coated-internal-fixation-screws
#3
Shuo Li, Hengfeng Yuan, Jianfeng Pan, Wenshuai Fan, Liang Zhu, Zuoqin Yan, Changan Guo
PURPOSE: Previous studies have proved that vascular endothelial growth factor (VEGF) has a dual role in the promotion of new bone formation and blood vessel repair during fracture healing. However, how to introduce VEGF to a fracture site safely and effectively is still a challenge. This study aimed to prepare a VEGF-loaded nanographene coated internal fixation screw and to evaluate its effects in the treatment of femoral neck fracture. METHODS: Nanographene coated screws were prepared by direct liquid-phase exfoliation of the graphite method, and the surface characteristics were observed through scanning electron microscopy (SEM)...
2017: PloS One
https://www.readbyqxmd.com/read/29115490/microrna%C3%A2-206-contributes-to-the-progression-of-steroid%C3%A2-induced-avascular-necrosis-of-the-femoral-head-by-inducing-osteoblast-apoptosis-by-suppressing-programmed-cell-death-4
#4
Zaiheng Zhang, Anmin Jin, Denglu Yan
The expression of microRNA‑206 (miR‑206) is aberrantly induced in steroid‑induced avascular necrosis of femoral head (SANFH). Therefore, investigating the function of miR‑206 in SANFH and uncovering the functional mechanism associated with the condition will promote the understanding and treatment of the disease. The purpose of the present study was to investigate the pro‑osteoclasteogenic effect of miR‑206 that occurs through regulation of programmed cell death 4 (PDCD4). The expression of miR‑206 and PDCD4 was analyzed in the clinical SANFH specimens...
November 3, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29105637/detection-of-ad-bmp-2-ires-hif-1%C3%AE-mu-on-local-promoting-angiogenic-and-osteogenic-capacity-of-necrosis-area
#5
Fuai Cui, Xiuli Wang, Wei Wang, Peng Xiao, Yuan Ma, Lindong Jiang
The induced EPCs were transfected by Ad-BMP-2-IRES-HIF-1αmu, and then transplanted into femoral head necrotic zone, the effect on osteogenesis and agiogenesis of necrosis zone was detected. The Ad-BMP-2-IRES-HIF-1α was transfected into induced EPCs and then transplanted into avascular necrotic parts of the femoral head (ANFH).Afterwards, the promotion effect on angiogenic and osteogenic capabilities of the necrosis parts from Ad-BMP-2-IRES-HIF-1α was detected. Rabbit bone marrow MNCs were obtained by density gradient centrifugation method, and were induced into EPCs by M199 medium; EPCs were identified in accordance with the cell morphology, specific surface markers and uptake abilities...
September 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29083360/management-and-treatment-of-femoral-neck-stress-fractures-in-recreational-runners-a-report-of-four-cases-and-review-of-the-literature
#6
Carlo Biz, Antonio Berizzi, Alberto Crimì, Chiara Marcato, Giulia Trovarelli, Pietro Ruggieri
Femoral neck stress fractures (FNSFs) in healthy young subjects are uncommon and most prevalent among long-distance runners and military recruits. Women seem to be at higher risk of developing stress fractures because of possible eating disorders followed by amenorrhea and osteoporosis. This case report describes four young and middle-aged, active female recreational runners who developed stress fractures of the femoral neck. In three of them, with a clinical history of persistent pain in the groin region, which worsened during training, early diagnosis by MRI was considered essential in detecting the fractures...
October 18, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/29068514/high-incidence-of-aseptic-hip-necrosis-in-hodgkin-lymphoma-patients-treated-with-escalated-beacopp-receiving-methylprednisolone
#7
Sandra Basic-Kinda, Ivan Karlak, Nadira Durakovic, Zvonimir Ivan Lubina, Ivo Radman, Snježana Dotlic, Zinaida Peric, Ida Hude, Igor Aurer
BACKGROUND: Escalated BEACOPP (eBEACOPP) is an effective but fairly toxic regimen for treatment of Hodgkin lymphoma (HL). Avascular necrosis of femoral head (AVN) was previously reported to be increased in patients treated with eBEACOPP, but so far no systematic analysis of its frequency has been published. AIMS: We aimed to analyze frequency and identify possible risk factors for AVN development in patients treated with eBEACOPP. METHODS: We identified 26 patients treated with eBEACOPP for newly diagnosed high-risk advanced stage HL, 25 patients alive at the time of study...
October 25, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/29068288/timing-of-surgical-intervention-for-developmental-dysplasia-of-the-hip-a-randomised-controlled-trial-hip-op
#8
Charlotte L Williams, Susie Weller, Lisa Roberts, Isabel Reading, Andrew Cook, Louisa Little, Wendy Wood, Louise Stanton, Andreas Roposch, Nicholas Mp Clarke
BACKGROUND: Developmental dysplasia of the hip (DDH) is a very common congenital disorder, and late-presenting cases often require surgical treatment. Surgical reduction of the hip may be complicated by avascular necrosis (AVN), which occurs as a result of interruption to the femoral head blood supply during treatment and can result in long-term problems. Some surgeons delay surgical treatment until the ossific nucleus (ON) has developed, whereas others believe that the earlier the reduction is performed, the better the result...
October 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29061495/femoral-osteochondroplasty-can-be-performed-effectively-without-the-risk-of-avascular-necrosis-or-femoral-neck-fractures-in-an-experimental-ovine-fai-model
#9
F Schmaranzer, L Arendt, T D Lerch, S D Steppacher, K Nuss, N Wolfer, H E Dawson, B von Rechenberg, P R Kircher, M Tannast
OBJECTIVE: The experimental induction of cam-type femoroacetabular impingement (FAI) in sheep is established. To tap the full potential of this ovine model, one should be able to perform a femoral osteochondroplasty safely. This study was based on previous cadaver experiments on the blood supply to the ovine femoral head and on the biomechanical strength of the proximal femur following offset creation. We hypothesized that offset creation in this ovine FAI model does not lead to (1) avascular necrosis (AVN) of the ovine femoral head or (2) iatrogenic femoral neck fractures and (3) can be performed effectively...
October 20, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29048690/large-fresh-osteochondral-allografts-for-the-hip-growing-the-evidence
#10
Lasun O Oladeji, James L Cook, James P Stannard, Brett D Crist
INTRODUCTION: Articular cartilage lesions of the hip are difficult to effectively treat. Osteochondral allograft (OCA) transplantation in the knee has been associated with long-term success, but OCA for the hip has not been extensively studied. Here, we present the clinical and radiological outcomes from a cohort of 10 patients treated with fresh OCA transplants for large osteochondral defects of the femoral head and/or acetabulum. METHODS: 10 patients who had undergone osteochondral allograft transplantation of the femoral head and/or acetabulum at our institution between 2013 and 2016 were identified from our Institutional Review Board-approved registry...
October 17, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29047405/cortisol-inhibits-mtor-signaling-in-avascular-necrosis-of-the-femoral-head
#11
Yun Liao, Rui Su, Ping Zhang, Bo Yuan, Ling Li
BACKGROUND: ANFH is a major health problem, to which long lasting and definitive treatments are lacking. The aim of this study is to study RNA alterations attributed to cortisol-induced ANFH. METHODS: Rat models were stratified into three groups: in vitro group (n = 20) for molecular biological assays, control group (n = 3), and ANFH group induced using lipopolysaccharide and dexamethasone (n = 3). Bone marrow-derived endothelial progenitor cells (BM-EPCs) were extracted from the rats...
October 18, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29027184/low-rate-of-clinically-important-avascular-necrosis-of-the-femoral-head-after-ludloff-s-procedure
#12
Jesper Holbeck-Brendel, Bjarne Møller-Madsen, Ivan Hvid, Michel B Hellfritzsch, Line K Pedersen, Peter Dalsgaard, Ole Rahbek
INTRODUCTION: Ludloff's procedure for open reduction of congenital dislocation of the hip (CDH) is recommended for its minimal tissue damage, but is criticised for the risk of late avascular necrosis (AVN) of the femoral head. The aim of present study was primarily to assess the risk of late AVN of the femoral head and secondly the range of motion (ROM) of the hip and the quality of life in children following Ludloff's procedure. METHODS AND MATERIALS: 13 hips in 11 children after Ludloff's procedure due to CDH were included retrospectively from 1997 to 2005 at Aarhus University Hospital...
October 12, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28993082/noncemented-total-hip-arthroplasty-in-sickle-cell-disease-long-term-results
#13
Imran Ilyas, Husam A Alrumaih, Samar Rabbani
BACKGROUND: Avascular necrosis of the femoral head is a well-known sequela of sickle-cell disease (SCD) requiring a surgical intervention that comes with technical challenges. METHODS: Uncemented hip arthroplasty for avascular necrosis of the femoral head due to SCD was carried out for 101 patients (133 hips) between 2000 and 2012. The duration of follow-up ranged from 5 to 17 years (mean, 14.59 years). All patients received a noncemented femoral stem and a noncemented acetabular shell...
September 14, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28975994/mir-145-silencing-promotes-steroid-induced-avascular-necrosis-of-the-femoral-head-repair-via-upregulating-vegf
#14
Z-J Tian, B-Y Liu, Y-T Zhang, X-Z Chen, G-Y Qiao, S Wang, Z-L Ma
OBJECTIVE: To investigate the role of miR-145 silencing in the expression of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF), B-cell lymphoma-2 (Bcl-2), BCL2-Associated X(bax) and caspase-3 in avascular necrosis of femoral head (ANFH). MATERIALS AND METHODS: A total of 12 healthy wild-types (the control group) and 12 miR-145 knock-out (miR-145-/-) (the experimental group) adult New Zealand white rabbits were selected to construct ANFH model with a steroid...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28951638/non-parallel-screw-fixation-for-femoral-neck-fractures-in-young-adults
#15
Sherif Galal, Mohamed Nagy
INTRODUCTION: Current literature shows divergence of views regarding screws positioning in femoral neck fractures fixation. The goal of this study is to evaluate the efficiency of divergent screw fixation for fracture neck of femur (NOF). METHODS: The study was conducted at an academic Level 1 Trauma Center. This is a retrospective study conducted from October 2013 to October 2016. The study included 41 patients (33 males, 8 females) suffering from fracture NOF who were fixed using BDSF technique (26 within 24 h...
July 2017: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28913399/reactive-scoliosis-a-challenging-phenomenon-in-adolescent-patients-with-hip-arthritis
#16
Madhav Chowdhry, Laura Matsen Ko, Corinna Franklin, Javad Parvizi
Functional limb length discrepancy (LLD) in adolescents can result from soft tissue contracture following long-standing hip disease. We present a case of a 13-year-old girl with difficulty in ambulation due to right hip pain and LLD. Radiographs revealed severe arthritis of right hip with signs of avascular necrosis of the femoral head. The patient had developed reactive scoliosis of lumbar spine along with pelvic obliquity. After failing conservative management, total hip arthroplasty (THA) without attempting to equalize LLD was performed...
September 2017: Arthroplasty Today
https://www.readbyqxmd.com/read/28882372/reduced-survival-for-uncemented-compared-to-cemented-total-hip-arthroplasty-after-operatively-treated-acetabular-fractures
#17
John Clarke-Jenssen, Marianne Westberg, Olav Røise, Stein Arne Øvre Storeggen, Tone Bere, Ingunn Silberg, Jan Erik Madsen
BACKGROUND: Post traumatic arthritis and avascular necrosis of the femoral head are common complications after operatively treated acetabular fractures. This may cause severe disabilities for the patient, necessitating a total hip arthroplasty. Even though an arthroplasty may provide good symptomatic relief, the long-term results are more uncertain and no consensus exists according to preferred prosthetic designs. With this cohort study, we aimed to investigate the medium to long term arthroplasty survival and clinical results of total hip arthroplasty after operatively treated acetabular fractures...
September 4, 2017: Injury
https://www.readbyqxmd.com/read/28878383/avascular-necrosis-of-femoral-head-a-metabolomic-biophysical-biochemical-electron-microscopic-and-histopathological-characterization
#18
Aswath Narayanan, Prakash Khanchandani, Roshan M Borkar, Chandrashekar Reddy Ambati, Arun Roy, Xu Han, Ritesh N Bhoskar, Srinivas Ragampeta, Francis Gannon, Vijaya Mysorekar, Balasubramanyam Karanam, Sai Muthukumar V, Venketesh Sivaramakrishnan
Avascular necrosis of the femur head (AVNFH) is a debilitating disease caused due to the use of alcohol, steroids, following trauma or unclear (idiopathic) etiology, affecting mostly the middle aged population. Clinically AVNFH is associated with impaired blood supply to the femoral head resulting in bone necrosis and collapse. Although Homocysteine (HC) has been implicated in AVNFH, levels of homocysteine and its associated pathway metabolites have not been characterized. We demonstrate elevated levels of homocysteine and concomitantly reduced levels of vitamins B6 and B12, in plasma of AVNFH patients...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28877384/exosomes-secreted-from-mutant-hif-1%C3%AE-modified-bone-marrow-derived-mesenchymal-stem-cells-attenuate-early-steroid-induced-avascular-necrosis-of-femoral-head-in-rabbit
#19
Haile Li, Danping Liu, Chen Li, Shanjian Zhou, Dachuan Tian, Dawei Xiao, Huan Zhang, Feng Gao, Jianhua Huang
Mesenchymal stem cells (MSCs)-derived exosomes exhibit protective effects on damaged or diseased tissues. Hypoxia-inducible factor 1α (HIF-1α) plays a critical role in bone development. However, HIF-1α is easily biodegradable under normoxic conditions. The bone-marrow-derived mesenchymal stem cells (BMSCs) were transfected with adenovirus carrying triple point-mutations (amino acids 402, 564, and 803) in the HIF-1α coding sequence (CDS). The mutant HIF-1α can efficiently express functional proteins under normoxic conditions...
September 6, 2017: Cell Biology International
https://www.readbyqxmd.com/read/28861192/comparison-of-outcomes-of-total-hip-arthroplasty-between-patients-with-ankylosing-spondylitis-and-avascular-necrosis-of-the-femoral-head
#20
Sun-Ho Lee, Gun-Woo Lee, Young-Jun Seol, Kyung-Soon Park, Taek-Rim Yoon
BACKGROUND: The objective of this study was to compare clinical and radiological outcomes of total hip arthroplasty (THA) between ankylosing spondylitis (AS) of the hip joint and avascular necrosis (AVN) of the femoral head. METHODS: Thirty patients (30 hips) underwent cementless THA for AS between 2003 and 2012. They were compared to 30 patients (30 hips) who underwent the same procedure for AVN of the femoral head. Each group was matched for age and gender, and both groups had similar preoperative demographic characteristics...
September 2017: Clinics in Orthopedic Surgery
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