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https://www.readbyqxmd.com/read/28740521/new-quantitative-ultrasound-techniques-for-bone-analysis-at-the-distal-radius-in-hip-fracture-cases-differences-between-femoral-neck-and-trochanteric-fractures
#1
Motoyuki Horii, Hiroyoshi Fujiwara, Ryo Sakai, Koshiro Sawada, Yasuo Mikami, Syogo Toyama, Etsuko Ozaki, Nagato Kuriyama, Masao Kurokawa, Toshikazu Kubo
BACKGROUND: Ample evidence on etiological and pathological differences between femoral neck and trochanteric fracture cases suggests the possibility of individualized treatment. There are many issues related to areal bone mineral density and other quantitative computed tomography parameters of the proximal femur. Although osteoporosis is a systemic problem, little has been reported regarding differences in bone structural parameters, including bone mineral density, between them in regions other than the proximal femur...
January 2017: Clinical Cases in Mineral and Bone Metabolism
https://www.readbyqxmd.com/read/28739416/comparison-of-non-invasive-assessments-of-strength-of-the-proximal-femur
#2
Fjola Johannesdottir, Erica Thrall, John Muller, Tony M Keaveny, David L Kopperdahl, Mary L Bouxsein
It is not clear which non-invasive method is most effective for predicting strength of the proximal femur in those at highest risk of fracture. The primary aim of this study was to compare the abilities of dual energy X-ray absorptiometry (DXA)-derived aBMD, quantitative computed tomography (QCT)-derived density and volume measures, and finite element analysis (FEA)-estimated strength to predict femoral failure load. We also evaluated the contribution of cortical and trabecular bone measurements to proximal femur strength...
July 21, 2017: Bone
https://www.readbyqxmd.com/read/28735800/durability-of-hemiarthroplasty-for-pathologic-proximal-femur-fractures
#3
Matthew T Houdek, Cody C Wyles, Joshua R Labott, Peter S Rose, Michael J Taunton, Franklin H Sim
BACKGROUND: The hip is a common location for metastatic tumors. Due to the high loads placed through the proximal femur, surgery is often indicated to provide pain relief and restore function. Historically, these lesions are reconstructed with a hemiarthroplasty; however, there are few reports on the outcome of these reconstructions. The purpose of this study is to evaluate the outcome of hemiarthroplasty for the treatment of proximal femur metastatic disease, with a specific focus on the rates of conversion to total hip arthroplasty (THA)...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28728078/femoral-head-necrosis-a-finite-element-analysis-of-common-and-novel-surgical-techniques
#4
Myriam Cilla, Sara Checa, Bernd Preininger, Tobias Winkler, Carsten Perka, Georg N Duda, Matthias Pumberger
BACKGROUND: Femoral head necrosis is a common cause of secondary osteoarthritis. At the early stages, treatment strategies are normally based on core decompression techniques, where the number, location and diameter of the drilling holes varies depending on the selected approach. The purpose of this study was to investigate the risk of femoral head, neck and subtrochanteric fracture following six different core decompression techniques. MATERIALS: Five common and a newly proposed techniques were analyzed in respect to their biomechanical consequences using finite element analysis...
July 6, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28726191/virtual-experimental-validation-of-dynamic-osteosynthesis-in-the-treatment-of-fractures-of-the-proximal-femur
#5
V E Dubrov, I A Kuz'kin, I M Shcherbakov, A L Matveev, A V Yudin
Volume model of transtrochanteric fracture of the femoral bone fixed by Targon PF dynamic fixator was studied by the finite element analysis. The following parameters were measured: magnitude and direction of displacement of system elements, pressure between fragments, and von Mises stress distribution in the fixator depending on support screw plunging into the sleeve. The results indicate that stability of the bone-nail system increases during fracture union and 10-mm shortening of the femoral neck axis, which is seen from a decrease in system deformation under load by 16...
July 18, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28720522/patients-with-non-ambulatory-cerebral-palsy-have-higher-sclerostin-levels-and-lower-bone-mineral-density-than-patients-with-ambulatory-cerebral-palsy
#6
Yoon-Kyum Shin, Young Kwon Yoon, Kyung Bae Chung, Yumie Rhee, Sung-Rae Cho
Bone loss is a serious clinical issue in patients with cerebral palsy (CP). Sclerostin has garnered interest as a key mechanosensor in osteocytes, leading to considerations of the therapeutic utilization of anti-sclerostin medications. This study was undertaken to determine associations among mechanical unloading, sclerostin levels, and bone imbalance in patients with CP. A total of 28 patients with CP participated in this cross-sectional study. The following measurements were taken: anthropometrics, clinical diagnosis of CP subtype and ambulatory status, bone mineral density (BMD) z-scores at the lumbar spine and hip, and blood biochemical markers, including sclerostin, parathyroid hormone (PTH), osteocalcin, C-terminal telopeptide, 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D, creatinine, calcium, and phosphorus...
July 15, 2017: Bone
https://www.readbyqxmd.com/read/28719564/the-new-apgar-score-a-checklist-to-enhance-quality-of-life-in-geriatric-patients-with-hip-fracture
#7
Joseph Bernstein, Sara Weintraub, Eric Hume, Mark D Neuman, Stephen L Kates, Jaimo Ahn
For geriatric patients with hip fractures, the broken bone is the reason for admission, but only part of the overall disease. Indeed, it may be more helpful to consider the patient having geriatric hip fracture syndrome or sustaining a hip attack, as there are many associated medical, social, psychological, and other problems to which attention must be paid. To that end, we have identified a series of 10 steps, collected into a checklist, that can be undertaken for all patients with geriatric hip fracture. In homage to the maxim "we come into the world under the brim of the pelvis and go out through the neck of the femur," we defined our checklist by the acronym APGAR SCORE, named after the classic checklist of the same name used to assess a newborn child...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28719561/arterial-topographic-anatomy-near-the-femoral-head-neck-perforation-with-surgical-relevance
#8
Paulo Rego, Vasco Mascarenhas, Diego Collado, Ana Coelho, Luis Barbosa, Reinhold Ganz
BACKGROUND: Knowledge of the vascular supply of the femoral head is crucial for hip-preserving surgical procedures. The critical area for reshaping cam deformity is at the retinacular vessel penetration, an area with ill-defined topographic anatomy. We performed a cadaver study of the extension of the lateral retinaculum near the head-neck junction, distribution of the arterial vascular foramina, and initial intracapital course of these vessels. METHODS: In 16 fresh proximal parts of the femur without head-neck deformities, the deep branch of the medial femoral circumflex artery was injected with gadolinium for magnetic resonance imaging (MRI) sequences to identify arterial structures...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28704413/association-of-insulin-resistance-with-near-peak-bone-mass-in-the-femur-and-lumbar-spine-of-korean-adults-aged-25-35-the-korean-national-health-and-nutrition-examination-survey-2008-2010
#9
Min Soo Choo, Se Rin Choi, Jun Hyun Han, Seong Ho Lee, Young Suk Shim
OBJECTIVE: This study aimed to evaluate the relationship between insulin resistance and the bone mineral density (BMD) of femur and lumbar spine in Korean adults who are expected to exhibit near peak bone mass. METHODS: Data from the Korean National Health and Nutrition Examination Survey 2008-2010 were analyzed. A total of 2,750 participants aged 25-35 years were included. Insulin resistance was assessed using a homeostatic model assessment of insulin resistance (HOMA-IR) and serum fasting insulin...
2017: PloS One
https://www.readbyqxmd.com/read/28702399/bilateral-simultaneous-neck-femur-fracture-following-domestic-fall-in-an-elderly-patient-a-rare-case-report
#10
Mayank Vijayvargiya, Vivek Shetty, Kiran Makwana, Nitesh Agarwal
Simultaneous bilateral neck femur fracture is a rare entity that has been associated with underlying bone disease, various metabolic diseases, high-energy trauma, and seizure disorders. Its occurrence following minimal trauma is very rare. This article presents the case of a 66-year-old female who sustained bilateral intracapsular fracture neck femur following a slip and fall at home. Single-stage bilateral cemented total hip replacement was done using a direct lateral approach with alternate right and left lateral positions...
May 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28700637/contingent-association-between-the-size-of-the-social-support-network-and-osteoporosis-among-korean-elderly-women
#11
Seungwon Lee, Da Hea Seo, Kyoung Min Kim, Eun Young Lee, Hyeon Chang Kim, Chang Oh Kim, Yoosik Youm, Yumie Rhee
OBJECTIVE: To investigate the association between the number of personal ties (or the size of the social support network) and the incidence of osteoporosis among older women in Korea. METHODS: Data from the Korean Urban Rural Elderly Study were used. Bone density was measured by dual-energy X-ray absorptiometry at the lumbar spine (L1-L4) and femur neck. T-score, the standardized bone density compared with what is normally expected in a healthy young adult, was measured and the presence of osteoporosis was determined, if the T-score was < -2...
2017: PloS One
https://www.readbyqxmd.com/read/28695227/-cancellous-screws-versus-dynamic-hip-screw-fixation-of-femural-neck-fractures-the-fixation-using-alternative-implants-for-the-treatment-of-hip-fractures-study-faith
#12
https://www.readbyqxmd.com/read/28693882/bone-density-and-cross-sectional-geometry-of-the-proximal-femur-are-bilaterally-elevated-in-elite-cricket-fast-bowlers
#13
Matthew J Lees, Clive B Beggs, Matthew J Barlow, Zoe H Rutherford, Kunwar Bansil, Lisa Gannon, Karen Hind
The skeleton of a cricket fast bowler is exposed to a unique combination of gravitational and torsional loading in the form of substantial ground reaction forces delivered through the front landing foot, and anterior-posterior shear forces mediated by regional muscle contractions across the lumbo-pelvic region. The objectives of this study were to compare the hip structural characteristics of elite fast bowlers with recreationally active age-matched controls, and to examine unilateral bone properties in fast bowlers...
July 7, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28689807/rewriting-the-tip-apex-distance-for-the-proximal-femoral-nail-anti-rotation
#14
Michael Yam, Anuj Chawla, Ernest Kwek
INTRODUCTION: The proximal femur nail anti-rotation (PFNA-II) (Synthes GmbH, Oberdorf, Switzerland) is the most commonly used implant for intramedullary nailing of unstable intertrochanteric fractures in our centre. However, mechanical failure of the bone with respect to the implant is a cause of concern due to its significant morbidity especially in the elderly. To date, factors for fixation failures are not well defined in the literature. This study aims to evaluate the factors that predispose to cut out of the PFNA implant and to provide a guide for surgical fixation...
July 1, 2017: Injury
https://www.readbyqxmd.com/read/28688198/study-of-the-interactions-between-proximal-femur-3d-bone-shape-cartilage-health-and-biomechanics-in-patients-with-hip-osteoarthritis
#15
Valentina Pedoia, Michael A Samaan, Gaurav Inamdar, Matthew C Gallo, Richard B Souza, Sharmila Majumdar
In this study quantitative MRI and gait analysis were used to investigate the relationships between proximal femur 3D bone shape, cartilage morphology, cartilage biochemical composition, and joint biomechanics in subject with hip Osteoarthritis (OA). Eighty subjects underwent unilateral hip MR-imaging: T1ρ and T2 relaxation times were extracted through voxel based relaxometry and bone shape was assessed with 3D MRI-based statistical shape modeling. In addition, 3D gait analysis was performed in seventy-six of the studied subjects...
July 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28679476/outcome-of-bone-marrow-instillation-at-fracture-site-in-intracapsular-fracture-of-femoral-neck-treated-by-head-preserving-surgery
#16
Nikhil Verma, M P Singh, Rehan Ul-Haq, Rajesh K Rajnish, Rahul Anshuman
PURPOSE: The aim of present study is to evaluate the outcome of bone marrow instillation at the fracture site in fracture of intracapsular neck femur treated by head preserving surgery. METHODS: This study included 32 patients of age group 18-50 years with closed fracture of intracapsular neck femur. Patients were randomized into two groups as per the plan generated via www.randomization.com. The two groups were Group A (control), in which the fracture of intracapsular neck femur was treated by closed reduction and cannulated cancellous screw fixation, and Group B (intervention), in which additional percutaneous autologous bone marrow aspirate instillation at fracture site was done along with cannulated cancellous screw fixation...
June 19, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28678833/bone-mass-of-female-dance-students-prior-to-professional-dance-training-a-cross-sectional-study
#17
Tânia Amorim, George S Metsios, Matthew Wyon, Alan M Nevill, Andreas D Flouris, José Maia, Eduardo Teixeira, José Carlos Machado, Franklim Marques, Yiannis Koutedakis
BACKGROUND: Professional dancers are at risk of developing low bone mineral density (BMD). However, whether low BMD phenotypes already exist in pre-vocational dance students is relatively unknown. AIM: To cross-sectionally assess bone mass parameters in female dance students selected for professional dance training (first year vocational dance students) in relation to aged- and sex-matched controls. METHODS: 34 female selected for professional dance training (10...
2017: PloS One
https://www.readbyqxmd.com/read/28663404/outcomes-after-early-return-to-theatre-following-hip-hemiarthroplasty-for-intracapsular-fracture-of-the-femoral-neck
#18
G Mamarelis, S Key, J Snook, C Aldam
AIMS: Hip hemiarthroplasty is a standard treatment for intracapsular proximal femoral fractures in the frail elderly. In this study we have explored the implications of early return to theatre, within 30 days, on patient outcome following hip hemiarthroplasty. PATIENTS AND METHODS: We retrospectively reviewed the hospital records of all hip hemiarthroplasties performed in our unit between January 2010 and January 2015. Demographic details, medical backround, details of the primary procedure, complications, subsequent procedures requiring return to theatre, re-admissions, discharge destination and death were collected...
July 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28660828/predictors-of-direct-home-discharge-following-fractured-neck-of-femur
#19
O Salar, P N Baker, D P Forward, B J Ollivere, N Weerasuriya, I K Moppett, C G Moran
INTRODUCTION Direct home discharge (DHD) following hip fracture surgery represents a challenging proposition. The aim of this study was to identify factors influencing the discharge destination (home vs alternative location) for patients admitted from their own home with a fractured neck of femur. METHODS A retrospective cohort study of prospectively collected major trauma centre data was performed, identifying 10,044 consecutive hip fracture admissions between 2000 and 2012. RESULTS Two-thirds of the patients (n=6,742, 67%) were admitted from their own home...
July 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28652932/a-study-of-the-progression-of-damage-in-an-axially-loaded-branta-leucopsis-femur-using-x-ray-computed-tomography-and-digital-image-correlation
#20
Zartasha Mustansar, Samuel A McDonald, William Irvin Sellers, Phillip Lars Manning, Tristan Lowe, Philip J Withers, Lee Margetts
This paper uses X-ray computed tomography to track the mechanical response of a vertebrate (Barnacle goose) long bone subjected to an axial compressive load, which is increased gradually until failure. A loading rig was mounted in an X-ray computed tomography system so that a time-lapse sequence of three-dimensional (3D) images of the bone's internal (cancellous or trabecular) structure could be recorded during loading. Five distinct types of deformation mechanism were observed in the cancellous part of the bone...
2017: PeerJ
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