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Avascular necrosis

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https://www.readbyqxmd.com/read/28526613/the-role-of-trochanteric-flip-osteotomy-in-fixation-of-certain-acetabular-fractures
#1
Sandeep Gupta, Jagdeep Singh, Jagandeep Singh Virk
PURPOSE: Complete visualization of certain acetabular fractures of posterior wall or column with cranial extension involving superior dome from standard surgical exposures is a challenge. Osteotomy of the greater trochanter has been used to enhance fracture visualization, especially the dome, in posterior and lateral exposures of the acetabulum. It also decreases the need for excessive muscle retraction. The purpose of the study was to investigate the outcome associated with trochanteric flip osteotomy in the management of certain acetabulum fractures...
March 23, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28507969/core-decompression-with-synthetic-grafting-as-a-joint-preservation-strategy-in-humeral-avascular-necrosis-due-to-sickle-cell-anemia-a-case-report
#2
Andrew M Steffensmeier, Karen Kirkham, John M Wiemann
INTRODUCTION: Avascular necrosis (AVN) of the femoral or humeral heads in patients with sickle cell anemia is a common and painful condition. There is currently no gold standard treatment protocol for this condition. Typically, the pain is managed with narcotics and activity restriction until there has been collapse of the subchondral bone with a degree of arthrosis sufficient to warrant total joint arthroplasty. This method entails prolonged pain for the patient and decreases the ability to function occupationally and recreationally...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28507661/bone-marrow-aspirate-concentrate-in-combination-with-intravenous-iloprost-increases-bone-healing-in-patients-with-avascular-necrosis-of-the-femoral-head-a-matched-pair-analysis
#3
Hakan Pilge, Bernd Bittersohl, Johannes Schneppendahl, Tobias Hesper, Christoph Zilkens, Martin Ruppert, Rüdiger Krauspe, Marcus Jäger
With disease progression, avascular necrosis (AVN) of the femoral head may lead to a collapse of the articular surface. The exact pathophysiology of AVN remains unclear, although several conditions are known that can result in spontaneous cell death, leading to a reduction of trabecular bone and the development of AVN. Hip AVN treatment is stage-dependent in which two main stages of the disease can be distinguished: pre-collapse (ARCO 0-II) and post-collapse stage (ARCO III-IV, crescent sign). In the pre-collapse phase, core decompression (CD), with or without the addition of bone marrow (e...
November 17, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/28503471/correction-effectiveness-of-lower-energy-density-extracorporeal-shock-wave-therapy-in-the-early-stage-of-avascular-necrosis-of-the-femoral-head
#4
Yong Han, June-Kyung Lee, Bong-Yeon Lee, Hoi-Sung Kee, Kwang-Ik Jung, Seo-Ra Yoon
[This corrects the article on p. 871 in vol. 40, PMID: 27847717.].
April 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28497451/anterior-greater-trochanteric-muscle-pedicle-bone-grafting-a-viable-graft-option-adjunct-to-hip-osteotomy-or-fracture-surgery
#5
Noppachart Limpaphayom, Phatcharapa Osateerakun, Vajara Wilairatana, Pairatch Prasongchin
INTRODUCTION: The objectives were to evaluate a technique, outcome and complications following anterior greater trochanteric with gluteus medius muscle pedicle bone graft (AMG) procedure in the treatment of adolescent and active adult hip disorders. METHODS: 20 patients (20 hips) with a mean age of 22.7 ± 15.6 (range 10.0-63.5) years who had undergone AMG and been followed up more than 12 months postoperative were retrospectively enrolled in our study. The AMG procedure was performed in conjunction with subcapital osteotomy for slipped capital femoral epiphysis in 12 and open reduction for fracture/dislocation in 8 hips...
May 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28495027/medial-femoral-condyle-microvascular-bone-transfer-as-a-treatment-for-capitate-avascular-necrosis-surgical-technique-and-case-report
#6
Nikolas H Kazmers, Joshua C Rozell, Kevin M Rumball, Scott H Kozin, Dan A Zlotolow, L Scott Levin
Avascular necrosis (AVN) of the capitate is a rare clinical entity for which a variety of treatment options have been described, ranging from immobilization to microvascular bone transfer. Outcomes following medial femoral condyle corticocancellous free flap reconstruction have not been reported for this specific pathology. We present the case of a 16-year-old girl with posttraumatic capitate AVN who was treated with curettage and medial femoral condyle corticocancellous vascularized bone grafting. At 18 months after surgery, the patient remains pain-free and had resumed all activities including lifeguarding by 6 months after surgery...
May 9, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28489740/percutaneous-pinning-after-prolonged-skeletal-traction-with-the-hip-in-a-flexed-position-for-unstable-slipped-capital-femoral-epiphysis-a-case-series-of-11-patients
#7
Masaki Matsushita, Kenichi Mishima, Kohji Iwata, Tadashi Hattori, Naoki Ishiguro, Hiroshi Kitoh
BACKGROUND: Unstable slipped capital femoral epiphysis (SCFE) has a relatively high risk of avascular necrosis of the femoral head. Standard treatment for unstable SCFE is still controversial. We reviewed unstable SCFE case series treated with the standardized protocol, which consisted of percutaneous pinning after prolonged skeletal traction. METHODS: Our treatment regimen for unstable SCFE patients included 1 week or more of skeletal traction with the hip in a flexed position of 45 degrees, and subsequent percutaneous pinning after unintentional reduction...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28481811/trochanteric-entry-for-femoral-lengthening-nails-in-children-is-it-safe
#8
Ahmed I Hammouda, Julio J Jauregui, Martin G Gesheff, Shawn C Standard, John E Herzenberg
BACKGROUND: Antegrade intramedullary (IM) nailing for skeletally immature femur fractures can damage the capital femoral epiphysis blood supply, leading to avascular necrosis (AVN) of the femoral head. Reported AVN rates are 2% for piriformis entry and 1.4% for trochanteric entry. None of previous reports described IM lengthening nails for limb lengthening procedures. We have used self-lengthening telescopic nails with a proximal Herzog bend and standard trochanteric entry for femoral lengthening in children...
June 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28481386/early-versus-late-weight-bearing-protocols-for-surgically-managed-posterior-wall-acetabular-fractures
#9
Austin Heare, Nicholas Kramer, Christopher Salib, Cyril Mauffrey
Despite overall improved outcomes with open reduction and internal fixation of acetabular fractures, posterior wall fractures show disproportionately poor results. The effect of weight bearing on outcomes of fracture management has been investigated in many lower extremity fractures, but evidence-based recommendations in posterior wall acetabular fractures are lacking. The authors systematically reviewed the current literature to determine if a difference in outcome exists between early and late postoperative weight-bearing protocols for surgically managed posterior wall acetabular fractures...
May 8, 2017: Orthopedics
https://www.readbyqxmd.com/read/28476399/idiopathic-avascular-necrosis-of-first-metatarsal-head-in-a-pediatric-patient
#10
Young-Uk Kwon, Jang-Seok Choi, Gyu-Min Kong, Byung-Ho Ha
Idiopathic avascular necrosis of the first metatarsal head rarely occurs in pediatrics. The present case of avascular necrosis of the first metatarsal head occurred in a 13-year-old male who came to the clinic with a 9-month history of pain in the first metatarsophalangeal joint. Conservative treatment had been applied for 9 months, but the pain had not been relieved. Therefore, surgical treatment, including decompression and debridement, was performed in the first metatarsal head of the patient. After 6 months of follow-up monitoring, full range of motion of the first metatarsophalangeal joint was observed, and the pain had disappeared...
May 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28469922/mid-life-extra-haematopoetic-manifestations-of-diamond-blackfan-anaemia
#11
Christopher Muir, Anthony Dodds, Katherine Samaras
SUMMARY: Diamond-Blackfan anaemia (DBA) is a rare cause of bone marrow failure. The incidence of malignancy and endocrine complications are increased in DBA, relative to other inherited bone marrow failure syndromes. We describe an adult woman with DBA who developed osteoporosis and avascular necrosis (AVN) of both distal femora. Such endocrine complications are not uncommon in DBA, but under-appreciated, especially in adulthood. Further, rectal adenocarcinoma was diagnosed at age 32 years, requiring hemi-colectomy and adjuvant chemotherapy...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28466104/imaging-evaluation-of-the-hip-after-arthroscopic-surgery-for-femoroacetabular-impingement
#12
REVIEW
Julia Crim
Arthroscopic surgery for femoroacetabular impingement (FAI) is increasingly frequently performed. Initial reports were that complications were very low, but as experience has increased, a number of long-term complications, in addition to factors related to poor clinical outcomes, have been identified. This review describes the normal and abnormal postoperative imaging appearance of the hip after arthroscopy for FAI. Abnormalities discussed include incomplete resection or over-resection of the impingement lesion, heterotopic ossification, cartilage damage, chondrolysis, instability and dislocation, recurrent labral tear, adhesions, psoas atrophy, infection, and avascular necrosis...
May 2, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28465464/inflammatory-signals-from-photoreceptor-modulate-pathological-retinal-angiogenesis-via-c-fos
#13
Ye Sun, Zhiqiang Lin, Chi-Hsiu Liu, Yan Gong, Raffael Liegl, Thomas W Fredrick, Steven S Meng, Samuel B Burnim, Zhongxiao Wang, James D Akula, William T Pu, Jing Chen, Lois E H Smith
Pathological neovessels growing into the normally avascular photoreceptors cause vision loss in many eye diseases, such as age-related macular degeneration and macular telangiectasia. Ocular neovascularization is strongly associated with inflammation, but the source of inflammatory signals and the mechanisms by which these signals regulate the disruption of avascular privilege in photoreceptors are unknown. In this study, we found that c-Fos, a master inflammatory regulator, was increased in photoreceptors in a model of pathological blood vessels invading photoreceptors: the very low-density lipoprotein receptor-deficient (Vldlr(-/-) ) mouse...
May 2, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28461967/core-decompression-and-biotechnologies-in-the-treatment-of-avascular-necrosis-of-the-femoral-head
#14
Giorgio Maria Calori, Emilio Mazza, Alessandra Colombo, Simone Mazzola, Massimiliano Colombo
Avascular necrosis (AVN) of the femoral head (FH) causes 5% to 12% of total hip arthroplasties (THA). It especially affects active male adults between the third and fifth decades of life. The exact worldwide incidence is unknown. There are only few data related to each country, but most of it relates to the United States.Non-surgical management has a very limited role in the treatment of AVN of the FH and only in its earliest stages. Core decompression (CD) of the hip is the most common procedure used to treat the early stages of AVN of the FH...
February 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28454497/microrna-34a-alleviates-steroid-induced-avascular-necrosis-of-femoral-head-by-targeting-tgif2-through-opg-rank-rankl-signaling-pathway
#15
Wu-Xun Peng, Chuan Ye, Wen-Tao Dong, Lei-Luo Yang, Chun-Qing Wang, Ze-An Wei, Jian-Hua Wu, Qing Li, Jin Deng, Jian Zhang
The study aims to investigate the effect of microRNA-34a (miR-34a) targeting Tgif2 on steroid-induced avascular necrosis of femoral head (SANFH) by regulating OPG/RANK/RANKL signaling pathway. SD rats were divided into normal control and model (RNAKL rat models) groups. The model group was further assigned into model control, negative control, miR-34a mimics and miR-34a inhibitors groups. QRT-PCR was applied to detect miR-34a, Tgif2, OPG, RANK and RNAKL mRNA expressions. Femoral head tissues were collected for Micro-CT scanning and HE staining...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28453928/the-clinical-severity-of-hemoglobin-s-black-a-%C3%AE-%C3%AE-%C3%AE-0-thalassemia
#16
Maria I Cancio, Banu Aygun, David H K Chui, Jennifer A Rothman, J Paul Scott, Jeremie H Estepp, Jane S Hankins
Hemoglobin S/Black ((A) γδβ)(0) -thalassemia is a rare sickle cell disease (SCD) variant. On the basis of limited descriptions in the literature, the disease is reported as a mild microcytic anemia with an uncomplicated course. We report the clinical and laboratory data of nine patients whose diagnoses were confirmed by DNA-based techniques. Despite having mild anemia and high fetal hemoglobin level postinfancy, these patients developed many of the classic complications of SCD, including vaso-occlusive crisis, acute chest syndrome, avascular necrosis, and cholelithiasis...
April 28, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28453342/flexor-tendon-rupture-due-to-previously-undiagnosed-kienb%C3%A3-ck-disease-a-case-report
#17
Kenrick Turner, Nicholas N Sheppard, Samuel E Norton
BACKGROUND: Spontaneous flexor tendon rupture is rare and most common in the little finger. The pathogenesis of spontaneous tendon ruptures is unclear but may occur through attrition or mechanical abrasion over a bony prominence. Kienböck disease is avascular necrosis of the lunate, with an unknown etiology. METHODS: We present a case of spontaneous rupture of flexor digitorum profundus due to Kienböck disease, which we believe is the first recorded case of flexor tendon rupture attributable to osteonecrosis of the lunate...
May 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28453341/the-scaphoid-staple-a-systematic-review
#18
John Dunn, Nicholas Kusnezov, Austin Fares, Justin Mitchell, Miguel Pirela-Cruz
BACKGROUND: The purpose of this systematic review is to analyze the indications, outcomes, and complications of scaphoid fixation with a staple. METHODS: The literature was reviewed for all cases of the scaphoid staple. Five articles including 188 patients, of 77 primary scaphoid fractures and 111 other indications that included delayed union, nonunion, and avascular necrosis, were reviewed. Demographic data, outcomes, and complications were recorded. RESULTS: The union rate of the scaphoid staple is 94...
May 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28446184/results-of-167-consecutive-cases-of-acetabular-fractures-using-the-kocher-langenbeck-approach-a-case-series
#19
Lukas L Negrin, David Seligson
BACKGROUND: Acetabular fractures are quite challenging injuries for the orthopedic surgeon because of their low incidence and their deep and complex anatomy. The objective of this study was to evaluate surgeon-independent parameters that might influence radiographic outcome and early complication rates of high-energy acetabular fractures treated by open reduction and internal fixation via the Kocher-Langenbeck approach, the golden standard for posterior access. METHODS: One hundred sixty-seven consecutive patients (111 males and 56 females) with a mean age of 41...
April 26, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28439419/chronic-complications-and-quality-of-life-of-patients-living-with-sickle-cell-disease-and-receiving-care-in-three-hospitals-in-cameroon-a-cross-sectional-study
#20
Anne M Andong, Eveline D T Ngouadjeu, Cavin E Bekolo, Vincent S Verla, Daniel Nebongo, Yannick Mboue-Djieka, Simeon-Pierre Choukem
BACKGROUND: Sickle Cell Disease (SCD) is associated with chronic multisystem complications that significantly influence the quality of life (QOL) of patients early in their life. Although sub-Saharan Africa bears 75% of the global burden of SCD, there is a paucity of data on these complications and their effects on the QOL. We aimed to record these chronic complications, to estimate the QOL, and to identify the corresponding risk factors in patients with SCD receiving care in three hospitals in Cameroon...
2017: BMC Hematology
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