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https://www.readbyqxmd.com/read/29781820/management-of-pediatric-femoral-neck-fracture
#1
Joseph T Patterson, Jennifer Tangtiphaiboontana, Nirav K Pandya
In the pediatric population, femoral neck fracture is a relatively uncommon injury with a high complication rate, despite appropriate diagnosis and management. The anatomy and blood supply of the proximal femur in the skeletally immature patient differs from that in the adult patient. Generally, these fractures result from high-energy trauma and are categorized using the Delbet classification system. This system both guides management and aids the clinician in determining the risk of osteonecrosis after these fractures...
May 16, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29779504/association-of-dietary-patterns-of-american-adults-with-bone-mineral-density-and-fracture
#2
Mohsen Mazidi, Andre Pascal Kengne, Hassan Vatanparast
OBJECTIVE: In a representative sample of US adults, we investigated the associations of nutrient patterns (NP) with bone mineral density (BMD) and fractures. DESIGN: Cross-sectional. SETTING: US community-based National Health and Nutrition Examination Survey (NHANES). SUBJECTS: Participants with measured data on dietary intake and BMD from 2005 to 2010 were included. Principal components analysis was used to identify NP...
May 21, 2018: Public Health Nutrition
https://www.readbyqxmd.com/read/29777918/sex-differences-in-the-spatial-distribution-of-bone-in-relation-to-incident-hip-fracture-findings-from-the-ages-reykjavik-study
#3
Elisa A Marques, Julio Carballido-Gamio, Vilmundur Gudnason, Gunnar Sigurdsson, Sigurdur Sigurdsson, Thor Aspelund, Kristin Siggeirsdottir, Lenore Launer, Gudny Eiriksdottir, Thomas Lang, Tamara B Harris
In this case-cohort study, we used data-driven computational anatomy approaches to assess within and between sex spatial differences in proximal femoral bone characteristics in relation to incident hip fracture. One hundred male and 234 female incident hip fracture cases, and 1047 randomly selected noncase subcohort participants (562 female) were chosen from the population-based AGES-Reykjavik study (mean age of 77 years). The baseline -i.e. before hip fracture- hip quantitative computed tomography scans of these subjects were analyzed using voxel-based morphometry, tensor-based morphometry, and surface-based statistical parametric mapping to assess the spatial distribution of volumetric bone mineral density (vBMD), internal structure, and cortical bone properties (thickness, vBMD and trabecular vBMD adjacent to the endosteal surface) of the proximal femur, respectively, in relation to incident hip fracture...
May 16, 2018: Bone
https://www.readbyqxmd.com/read/29775910/hip-and-patellofemoral-joint-loading-during-gait-are-increased-in-children-with-idiopathic-torsional-deformities
#4
Elyse Passmore, H Kerr Graham, Marcus G Pandy, Morgan Sangeux
BACKGROUND: Torsional deformities of the femur and tibia are associated with gait impairments and joint pain. Several studies have investigated these gait deviations in children with cerebral palsy. However, relatively little is known about gait deviations in children with idiopathic torsion and debate ensues about the management of these patients. RESEARCH QUESTION: What are the effects of idiopathic increased femoral neck anteversion and external tibial torsion on lower-limb kinematics, kinetics and joint loading during gait in children and adolescents...
May 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29774790/clear-cell-chondrosarcoma-with-chondroblastoma-like-features-a-case-for-team-diagnosis
#5
Ryan M Kiefer, John Wojcik, Kumarasen Cooper, Kristy L Weber, Ronnie Sebro
Clear cell chondrosarcoma (CCCS) is a rare variant of conventional chondrosarcoma with low-grade malignant features that may be confused radiographically and histologically with chondroblastoma. We report a case of a 50-year-old female who presented with 6 months of left hip pain. Initial radiographs demonstrated an osteolytic lesion with adjacent area of sclerosis in the proximal left femur. Magnetic resonance imaging demonstrated a marrow-infiltrative lesion with periosteal reaction and thickened enhancing periosteum...
May 1, 2018: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/29774416/restoration-of-proximal-periprosthetic-bone-loss-by-denosumab-in-cementless-total-hip-arthroplasty
#6
Satoshi Nagoya, Kenji Tateda, Shunichiro Okazaki, Ima Kosukegawa, Junya Shimizu, Toshihiko Yamashita
Denosumab contributed to the restoration of proximal periprosthetic bone loss around the femoral stem that were measured using a DEXA, especially in zone 7, at 1 year after cementless THA in elderly osteoporotic patients. INTRODUCTION: Although bone quality is an important issue in elderly osteoporotic patients who underwent total hip arthroplasty (THA) with a cementless stem, periprosthetic bone mineral density (BMD) in the proximal femur has been reported to be decreased by 15-40% postoperatively...
May 17, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29773487/how-can-a-short-stem-hip-implant-preserve-the-natural-pre-surgery-force-flow-a-finite-element-analysis-on-a-collar-cortex-compression-concept-co-4
#7
B Eidel, A Gote, A Ohrndorf, H-J Christ
The present work proposes a simple, novel fixation concept for short stem hip endoprostheses, which preserves the pre-surgery force flow through femoral bone to an unprecedented extent. It is demonstrated by finite element analyses that a standard implant model endowed with minor geometrical changes can overcome bone loading reduction and can achieve almost physiological conditions. The numerical results underpin that the key aspect of the novel, so-called "collar cortex compression concept CO4 " is the direct, almost full load transmission from the implant collar to the resected femur cortex, which implies that the implant stem must be smooth and therefore interacts mainly by normal contact with the surrounding bone...
May 14, 2018: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29773425/strain-rate-dependency-of-bovine-trabecular-bone-under-impact-loading-at-sideways-fall-velocity
#8
William S Enns-Bray, Stephen J Ferguson, Benedikt Helgason
There is currently a knowledge gap in scientific literature concerning the strain rate dependent properties of trabecular bone at intermediate strain rates. Meanwhile, strain rates between 10 and 200/s have been observed in previous dynamic finite element models of the proximal femur loaded at realistic sideways fall speeds. This study aimed to quantify the effect of strain rate (ε̇) on modulus of elasticity (E), ultimate stress (σu ), failure energy (Uf ), and minimum stress (σm ) of trabecular bone in order to improve the biofidelity of material properties used in dynamic simulations of sideways fall loading on the hip...
May 3, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29768025/the-post-injury-inflammatory-state-and-the-bone-marrow-response-to-anemia
#9
Tyler J Loftus, Juan C Mira, Elizabeth S Miller, Kolenkode B Kannan, Jessica M Plazas, Daniel Delitto, Julie A Stortz, Jennifer E Hagen, Hari K Parvataneni, Kalia K Sadasivan, Scott C Brakenridge, Frederick A Moore, Lyle L Moldawer, Philip A Efron, Alicia M Mohr
RATIONALE: The pathophysiology of persistent injury-associated anemia is incompletely understood, and human data are sparse. OBJECTIVE: To translate pre-clinical findings by characterizing injury-associated anemia among critically ill trauma patients. This study compared elective hip repair patients with an acute stress response to severely injured trauma patients with a prolonged stress response and evaluated the bone marrow response to anemia. METHODS: A translational prospective observational cohort study comparing severely injured, blunt trauma patients who had operative fixation of a hip or femur fracture (n=17) with elective hip repair patients (n=22) and healthy donors (n=8)...
May 16, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29766678/association-between-bone-mineral-density-and-albuminuria-cross-sectional-analysis-of-data-from-the-2011-korea-national-health-and-nutrition-examination-survey-v-2
#10
Tae Yang Yu, Ha Young Kim, Jeong Mi Lee, Dae Ho Lee, Chung Gu Cho
BACKGROUND: Albuminuria is known to be independently associated with progression of renal and cardiovascular disease. However, little is known regarding the exact relationship between albuminuria and bone mineral density (BMD). The aim of this population-based study conducted in Korea was to identify the association between albuminuria and BMD. METHODS: We performed a cross-sectional analysis of data from the Korea National Health and Nutrition Examination Survey (KNHANES V-2) 2011...
May 4, 2018: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29763812/computation-of-hip-rotation-kinematics-retrospectively-using-functional-knee-calibration-during-gait
#11
Morgan Sangeux
BACKGROUND: Hip rotation kinematics during gait is a key parameter to support clinical decision making, for example in children with lower limb torsional deformities. However, hip rotation kinematics is also one of the least repeatable parameter because it is difficult to locate the position of the medio-lateral axis of the femur. Functional knee calibration provides an alternative to locate the medio-lateral axis of the femur and may be performed retrospectively, using the movement of the knee joint during gait...
May 8, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29761748/transfemoral-amputation-adductor-myodesis-using-fibertape-and-knotless-anchors
#12
Andrew R Hsu
Transfemoral amputation is considered the last treatment option for severe infection, vascular disease, trauma, and malignant tumors of the lower extremity that have failed limb salvage. Unopposed pull of the hip abductors causes a flexion-abduction thigh deformity that results in abnormal biomechanics and increased oxygen consumption during ambulation. Myodesis of the adductor tendons is a critical component of transfemoral amputation that creates dynamic muscle balance, enhances prosthetic fitting and function, and improves clinical outcomes...
May 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29760941/hip-fracture-in-the-elderly-multidisciplinary-rehabilitation-femur-feasibility-study-testing-the-use-of-routinely-collected-data-for-future-health-economic-evaluations
#13
Nefyn H Williams, Kevin Mawdesley, Jessica L Roberts, Nafees Ud Din, Nicola Totton, Joanna M Charles, Zoe Hoare, Rhiannon T Edwards
Background: Health economic evaluations rely on the accurate measurement of health service resource use in order to calculate costs. These are usually measured with patient completed questionnaires using instruments such as the Client Service Receipt Inventory (CSRI). These rely on participants' recall and can be burdensome to complete. Health service activity data are routinely captured by electronic databases.The aim was to test methods for obtaining these data and compare with those data collected using the CSRI, within a feasibility study of an enhanced rehabilitation intervention following hip fracture (Fracture in the Elderly Multidisciplinary Rehabilitation: FEMuR)...
2018: Pilot and Feasibility Studies
https://www.readbyqxmd.com/read/29755607/risk-factors-for-the-development-of-nerve-palsy-following-primary-total-hip-arthroplasty
#14
Shunsuke Kawano, Motoki Sonohata, Masaru Kitajima, Masaaki Mawatari
Background: Nerve palsy following total hip arthroplasty (THA) is a complication that worsens the functional prognosis. The present study analyzed the risk factors of nerve palsy following THA. Methods: The subjects of this study included 6,123 cases in which primary THA was performed under spinal anesthesia with cementless implants used in the posterolateral approach. Results: Fourteen cases (0.22%) developed nerve palsy following THA, all of which involved palsy of the entire peroneal nerve region...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29742946/comparative-analysis-of-osseointegration-in-various-types-of-acetabular-implant-materials
#15
Stanislav Bondarenko, Ninel Dedukh, Volodymyr Filipenko, Mandus Akonjom, Ahmed Amine Badnaoui, Ran Schwarzkopf
BACKGROUND: There is a lack of comparative data on osseointegration (BIC) of acetabular cup surfaces in hip arthroplasty in both normal bone mineral density and in conditions of osteoporosis. AIM: To compare osseointegration of acetabular implants with various types of surfaces in an animal model with normal and osteoporotic bone tissue. MATERIAL AND METHODS: The study was performed on 60 rats. To simulate osteoporosis ovariectomy was performed in 30 animals...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29742933/bone-remodelling-of-the-proximal-femur-after-total-hip-arthroplasty-with-2-different-hip-implant-designs-15-years-follow-up-of-the-thrust-plate-prosthesis-and-the-bi-metric-stem
#16
Janus D Christiansen, Mogens B Laursen, Ashir Ejaz, Poul T Nielsen
INTRODUCTION: The thrust plate prosthesis (TPP) was introduced to preserve bone in patients undergoing total hip arthroplasty. We assessed the long-term results of hip arthroplasty in patients who received the TPP compared to a traditional intramedullary stem (Bi-Metric). METHODS: In this prospective observational cohort study, we evaluated bone mineral density (BMD) using dual-energy X-ray absorptiometry (DXA), radiological imaging and clinical outcome using Harris Hip Score (HHS)...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29740525/a-survey-of-current-practices-and-preferences-for-internal-fixation-of-trochanteric-fractures-of-the-femur-in-brazil
#17
Vincenzo Giordano, Denner N Ribeiro, Rafael G Tinoco, Thiago A Alvim, Marcos Giordano, Anderson Freitas, Hilton A Koch
Objective The primary aim of this study was to survey current practices and preferences behind internal fixation of trochanteric femoral fractures among Brazilian orthopedic surgeons. The secondary aim was to identify the main reason for these preferences. Methods A survey containing 20 images of trochanteric fractures of the femur was presented to a group of 62 orthopedists, all members of the Brazilian Society of Orthopedics and Traumatology (SBOT). The first part of the questionnaire was created to identify the surgeons' degree of professional experience, type of practice, and areas of greatest interest and performance within the specialty...
March 7, 2018: Curēus
https://www.readbyqxmd.com/read/29739248/cable-plating-with-a-single-strut-allograft-in-the-treatment-of-periprosthetic-fractures-of-the-femur-cable-plating-and-single-strut-allograft-in-periprosthetic-femur-fractures
#18
Jonathan R Manara, John A Mathews, Harvey S Sandhu
BACKGROUND: Hip arthroplasties are increasing worldwide resulting in an increasing number of periprosthetic fractures. These fractures are difficult to treat with various the different fixation or revision options described, many of which have high complication rates. PURPOSE: To investigate whether our described method of treating periprosthetic fractures is an effective, safe and reproducible method of treating patients. METHODS: We describe the largest series of a cable plate fixation system combined with a single cortical strut allograft to treat patients with periprosthetic fractures of the hip (Unified Classification System B1 and selected B2, C and D)...
May 1, 2018: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29738596/relatively-high-complication-and-revision-rates-of-the-mayo-%C3%A2-metaphysical-conservative-femoral-stem-in-young-patients
#19
Tal Frenkel Rutenberg, Yaniv Warshevski, Aviram Gold, Nadav Shasha, Nimrod Snir, Ofir Chechik, Oleg Dolkart, Dynai Eilig, Amir Herman, Ehud Rath, Moti Kramer, Michael Drexler
The Mayo metaphysical conservative femoral stem (Zimmer, Warsaw, Indiana) is a wedge-shaped implant designed to transfer loads proximally, reduce femoral destruction, and enable the preservation of bone stock in the proximal femur. Thus, it is a potentially preferred prosthesis for active, non-elderly patients who may require additional future surgeries. This retrospective case study analyzed the outcomes of consecutive patients who underwent total hip replacements with this stem between May 2001 and February 2013...
May 8, 2018: Orthopedics
https://www.readbyqxmd.com/read/29737103/-therapeutic-effect-of-uncemented-allograft-prosthetic-composite-for-the-reconstruction-of-tumorous-bone-defect
#20
Yan-Ling Wang, Li Min, Hong Duan, Yong Zhou, Wei-Li Zhang, Rui Shi, Yi Luo, Chong-Qi Tu
OBJECTIVE: To investigate the surgical techniques and mid-term efficacy of reconstruction for proximal femur with allograft-prosthetic composite (APC) . METHODS: Fifteen patients who underwent uncemented APC reconstruction of proximal femur after bone tumor resection were retrospectively evaluated. Image and physical examinations were taken on the 1st,3rd,6th,9th and 12th month after surgery and every 6 months thereafter to assess union condition,greater trochanteric bone absorption and myodynamia of abductors...
January 2018: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
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