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distal tibia

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https://www.readbyqxmd.com/read/28105636/cost-utility-of-osteoarticular-allograft-versus-endoprosthetic-reconstruction-for-primary-bone-sarcoma-of-the-knee-a-markov-analysis
#1
Robert J Wilson, Lina M Sulieman, Jacob P VanHouten, Jennifer L Halpern, Herbert S Schwartz, Clinton J Devin, Ginger E Holt
BACKGROUND: The most cost-effective reconstruction after resection of bone sarcoma is unknown. The goal of this study was to compare the cost effectiveness of osteoarticular allograft to endoprosthetic reconstruction of the proximal tibia or distal femur. METHODS: A Markov model was used. Revision and complication rates were taken from existing studies. Costs were based on Medicare reimbursement rates and implant prices. Health-state utilities were derived from the Health Utilities Index 3 survey with additional assumptions...
January 20, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28103852/stiffness-of-the-locking-compression-plate-as-an-external-fixator-for-treating-distal-tibial-fractures-a-biomechanics-study
#2
Wei Liu, Lihui Yang, Xiaochuan Kong, Likun An, Gang Hong, Zicheng Guo, Lei Zang
BACKGROUND: Locking compress plate, as external fixator, is an attractive technique for distal tibial fracture treatment. But it still remains unclear whether the external LCP has sufficient stiffness. Thus, the present study aims to make a comprehensive evaluation of the stiffness of external locking compress plate when it is used as an external fixator in distal tibial fractures treatment. METHODS: Composite tibia was used to simulate distal tibia fracture (Orthopedic Trauma Association type 43 A3 fracture)...
January 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28099199/chronic-lateral-epiphyseal-separation-of-the-proximal-tibia-causes-late-onset-tibia-vara
#3
Sachi Hasegawa, Hiroshi Kitoh, Masaki Matsushita, Kenichi Mishima, Izumi Kadono, Hiroshi Sugiura, Akiko Kitamura, Naoki Ishiguro
An adolescent obese boy showed late-onset unilateral tibia vara associated with physeal separation (slipped epiphysis) of the lateral proximal tibia and physeal widening of the lateral distal femur. These affected physes showed normal signal intensities by MRI. He was treated with lateral hemiepiphysiodesis of the left proximal tibia and the distal femur using two parallel eight-Plates, and varus deformity rapidly improved postoperatively without recurrence. This is the first case of late-onset tibia vara caused by lateral physeal separation of the proximal tibia...
January 17, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28097725/increased-cortical-porosity-in-women-with-hip-fracture
#4
D Sundh, A G Nilsson, M Nilsson, L Johansson, D Mellström, M Lorentzon
BACKGROUND: Hip fractures cause increased mortality and disability and consume enormous healthcare resources. Only 46% of hip fracture patients have osteoporosis at the total hip according to dual-energy X-ray absorptiometry (DXA) measurement. Cortical porosity increases with ageing and is believed to be important for bone strength. OBJECTIVE: To investigate whether older women with hip fracture have higher cortical porosity than controls, and if so whether this difference is independent of clinical risk factors and areal bone mineral density (aBMD)...
January 18, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28088646/bone-microarchitecture-in-adolescent-boys-with-autism-spectrum-disorder
#5
Ann M Neumeyer, Natalia Cano Sokoloff, Erin McDonnell, Eric A Macklin, Christopher J McDougle, Madhusmita Misra
BACKGROUND: Boys with autism spectrum disorder (ASD) have lower areal bone mineral density (aBMD) than typically developing controls (TDC). Studies of volumetric BMD (vBMD) and bone microarchitecture provide information about fracture risk beyond that provided by aBMD but are currently lacking in ASD. OBJECTIVES: To assess ultradistal radius and distal tibia vBMD, bone microarchitecture and strength estimates in adolescent boys with ASD compared to TDC. DESIGN/METHODS: Cross-sectional study of 34 boys (16 ASD, 18 TDC) that assessed (i) aBMD at the whole body (WB), WB less head (WBLH), hip and spine using dual X-ray absorptiometry (DXA), (ii) vBMD and bone microarchitecture at the ultradistal radius and distal tibia using high-resolution peripheral quantitative CT (HRpQCT), and (iii) bone strength estimates (stiffness and failure load) using micro-finite element analysis (FEA)...
January 11, 2017: Bone
https://www.readbyqxmd.com/read/28077378/peripheral-skeleton-bone-strength-is-positively-correlated-with-total-and-dairy-protein-intakes-in-healthy-postmenopausal-women
#6
Claire Durosier-Izart, Emmanuel Biver, Fanny Merminod, Bert van Rietbergen, Thierry Chevalley, François R Herrmann, Serge L Ferrari, René Rizzoli
BACKGROUND: Bone mineral content (BMC) and bone mineral density (BMD) are positively correlated with dietary protein intakes, which account for 1-8% of BMC and BMD variances. However, the relation between bone strength and microstructure, which are variables that are not captured by areal bone mineral density (aBMD), and dietary protein intakes, particularly from specific dietary sources, has not been clearly established. OBJECTIVE: We investigated the association between the peripheral skeleton-predicted failure load and stiffness, bone microstructure, and dietary protein intakes from various origins (animal, divided into dairy and nondairy, and vegetable origins) in healthy postmenopausal women...
January 11, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28075493/joint-stability-after-canine-cranial-cruciate-ligament-graft-reconstruction-varies-among-femoral-fixation-sites
#7
Louisa K Ho-Eckart, Masahiro Seki, Lindsey M Luizza, Michael T Kearney, Mandi J Lopez
OBJECTIVE: To quantify stability in cranial cruciate ligament (CrCL) deficient canine stifles with hamstring grafts affixed at 3 femoral locations. STUDY DESIGN: Canine stifle motion study using a multi-cohort, repeated measures design. SAMPLE POPULATION: 27 canine cadaver stifles. METHODS: Hamstring grafts (HG) were affixed at the gracilis-semitendinosus insertion and on the lateral femur (1) proximal trochlear ridge (TR), (2) craniodistal to fabella (F), or (3) condyle center (CC)...
January 11, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28058796/hox-gene-expression-in-the-specialized-limbs-of-the-iberian-mole-talpa-occidentalis
#8
Constanze Bickelmann, Wessel van der Vos, Merijn A G de Bakker, Rafael Jiménez, Saskia Maas, Marcelo R Sánchez-Villagra
Fossorial talpid moles use their limbs predominantly for digging, which explains their highly specialized anatomy. The humerus is particularly short and dorsoventrally rotated, with broadened distal and proximal parts where muscles attach and which facilitate powerful abductive movements. The radius and ulna are exceptionally robust and short. The ulna has an expanded olecranon process. The femur is generalized, but the fused tibia-fibula complex is short and robust. To understand the developmental bases of these specializations, we studied expression patterns of four 5' Hox genes in the fossorial Iberian mole (Talpa occidentalis)...
January 2017: Evolution & Development
https://www.readbyqxmd.com/read/28057011/functional-and-radiological-outcomes-of-a-minimally-invasive-surgical-approach-to-monostotic-fibrous-dysplasia
#9
Mamer S Rosario, Katsuhiro Hayashi, Norio Yamamoto, Akihiko Takeuchi, Shinji Miwa, Yuta Taniguchi, Hiroyuki Tsuchiya
BACKGROUND: Reports showing high recurrence rates for intralesional curettage and bone grafting have made the current treatment principle for fibrous dysplasia controversial. This study aimed to report the postoperative clinical outcomes from three minimally invasive surgical strategies we use for monostotic fibrous dysplasia (MFD). PATIENTS AND METHODS: Twelve patients with MFD presenting with no pathologic fracture or deformity and treated with one of three surgical strategies-plain open biopsy, plain alpha-tricalcium phosphate (ATP) reconstruction, and prophylactic bridge plating-were included...
January 5, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28052415/arthroscopic-approach-and-intra-articular-anatomy-of-the-dorsal-and-plantar-synovial-compartments-of-the-bovine-tarsocrural-joint
#10
Hélène Lardé, Sylvain Nichols, Marie Babkine, André Desrochers
OBJECTIVE: To determine arthroscopic approaches to the dorsal and plantar synovial compartments of the tarsocrural joint in adult cattle, and to describe the arthroscopic intra-articular anatomy from each approach. STUDY DESIGN: Ex vivo study. ANIMALS: Fresh adult bovine cadavers (n = 7). METHODS: Two tarsocrural joint were injected with latex to determine arthroscopic portal locations and arthroscopy of the tarsocrural joint of 12 tarsi was performed...
January 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28051829/apophyseal-and-epiphyseal-knee-injuries-in-the-adolescent-athlete
#11
P Persiani, F M Ranaldi, A Formica, M Mariani, O Mazza, M Crostelli, C Villani
OBJECTIVES: In the context of pediatric sports injuries, the epiphyseal and apophyseal knee fractures represent rather peculiar lesions. The most frequently involved anatomical area is the knee. The peculiar function of the physis and the need to preserve their integrity, makes choosing what treatment methods to employ very important. Objective of this study is to assess the kind and the effectiveness of the most suitable treatment in the apophyseal and epiphyseal knee lesions occurring in the adolescents...
November 2016: La Clinica Terapeutica
https://www.readbyqxmd.com/read/28051245/effects-of-renal-function-on-the-intraosseous-concentration-and-inhibitory-effect-of-prophylactic-cefazolin-in-knee-arthroplasty
#12
C Angthong, P Krajubngern, W Tiyapongpattana, B Pongcharoen, P Pinsornsak, N Tammachote, W Kittisupaluck
OBJECTIVE: To compare intraosseous concentrations and inhibitory effects on the growth of Staphylococcus aureus following intravenous administration of 1 or 2 g of the prophylactic cefazolin between patients with decreased renal function vs. intact renal function undergoing total knee arthroplasty. PATIENTS AND METHODS: Ten patients (13 knees) with primary knee osteoarthritis were divided into two groups by creatinine clearance (CrCl) level (intact renal function: CrCl ≥75 mg/mL (four knees); decreased renal function: CrCl <75 mg/mL (nine knees))...
December 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28050573/relationship-between-the-middle-genicular-artery-and-the-posterior-structures-of-the-knee-a-cadaveric-study
#13
Rogério Teixeira de Carvalho, Leonardo Addêo Ramos, João Victor Novaretti, Leandro Masini Ribeiro, Paulo Roberto de Queiroz Szeles, Sheila Jean McNeill Ingham, Rene Jorge Abdalla
BACKGROUND: The middle genicular artery (MGA) is responsible for the blood supply to the cruciate ligaments and synovial tissue. Traumatic sports injuries and surgical procedures (open and arthroscopic) can cause vascular damage. Little attention has been devoted to establish safe parameters for the MGA. PURPOSE: To investigate the anatomy of the MGA and its relation to the posterior structures of the knees, mainly the posterior capsule and femoral condyles, and to establish safe parameters to avoid harming the MGA...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28040091/reconstruction-of-patellar-tendon-following-implantation-of-proximal-tibia-megaprosthesis-for-the-treatment-of-post-traumatic-septic-bone-defects
#14
Giorgio M Calori, Emilio Luigi Mazza, Luca Vaienti, Simone Mazzola, Alessandra Colombo, Luca Gala, Massimiliano Colombo
INTRODUCTION: Latest advances made in joint replacement implants allows reconstruction of entire limbs. These special prostheses or megaprostheses were originally designed for the treatment of severe oncological bone loss. Nowadays, however, the indications and applications of these devices are expanding to other orthopaedic and trauma clinical conditions. Since 2008 we have implanted 152 megaprostheses in non-oncological conditions: 87 were implanted for post-traumatic failures aseptic/septic (represented by complex non-unions and critical size bone defects); 26 total femur, 52 distal femur and 9 proximal tibia...
December 2016: Injury
https://www.readbyqxmd.com/read/28040088/restoration-of-long-bone-defects-treated-with-the-induced-membrane-technique-protocol-and-outcomes
#15
Peter V Giannoudis, Paul J Harwood, Theodoros Tosounidis, Nikolaos K Kanakaris
This prospective study was undertaken at a regional tertiary referral centre to evaluate the results of treatment of bone defects managed with the induced membrane (IM) technique. Inclusion criteria were patients with bone defects secondary to septic non-union, chronic osteomyelitis and acute fracture with bone loss. Pathological fractures with bone loss were excluded. Data collection included patient demographics, pathology, previous surgical intervention, size of bone defect, type of graft implanted, time-to-union and complications/reinterventions...
December 2016: Injury
https://www.readbyqxmd.com/read/28039095/quantitative-in-vivo-assessment-of-bone-microarchitecture-in-the-human-knee-using-hr-pqct
#16
Andres Kroker, Ying Zhu, Sarah L Manske, Rhamona Barber, Nicholas Mohtadi, Steven K Boyd
OBJECTIVE: High-resolution peripheral quantitative computed tomography (HR-pQCT) is a novel imaging modality capable of visualizing bone microarchitecture in vivo at human peripheral sites such as the distal radius and distal tibia. This research has extended the technology to provide a non-invasive assessment of bone microarchitecture at the human knee by establishing new hardware, imaging protocols and data analysis. DESIGN: A custom leg holder was developed to stabilize a human knee centrally within a second generation HR-pQCT field of view...
December 27, 2016: Bone
https://www.readbyqxmd.com/read/28035313/rare-case-of-tibial-hemimelia-preaxial-polydactyly-and-club-foot
#17
Guinevere Granite, John E Herzenberg, Ronald Wade
A seven-month old female presented with left tibial hemimelia (or congenital tibial aplasia; Weber type VIIb, Jones et al type 1a), seven-toed preaxial polydactyly, and severe club foot (congenital talipes equinovarus). Definitive amputation surgery disarticulated the lower limb at the knee. This case report describes the anatomical findings of a systematic post-amputation examination of the lower limb's superficial dissection, X-rays, and computed tomography (CT) scans. From the X-rays and CT scans, we found curved and overlapping preaxial supernumerary toes, hypoplastic first metatarsal, lack of middle and distal phalanges in one supernumerary toe, three tarsal bones, hypoplastic middle phalanx and no distal phalanx for fourth toe, and no middle or distal phalanges for fifth toe...
December 16, 2016: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28032184/unique-effects-of-energy-versus-estrogen-deficiency-on-multiple-components-of-bone-strength-in-exercising-women
#18
E A Southmayd, R J Mallinson, N I Williams, D J Mallinson, M J De Souza
: Many female athletes are energy and/or estrogen deficient, but the independent effects on bone health have not been isolated. Energy deficiency was detrimental at the tibia while estrogen deficiency was detrimental at the radius. Nutrition must be considered alongside menstrual recovery when addressing compromised bone health in female athletes. INTRODUCTION: The purpose of this study was to describe volumetric bone mineral density (vBMD), bone geometry, and estimated bone strength in exercising women (n = 60) grouped according to energy status (energy replete (EnR: n = 30) vs...
December 28, 2016: Osteoporosis International
https://www.readbyqxmd.com/read/28031644/ineffective-treatment-of-low-molecular-weight-heparin-in-obese-subject-with-traumatic-fractures-of-the-leg
#19
Egidio Imbalzano, Michele Creazzo, Giovanni Trapani, Giuseppina Lizio, Antonino Saitta
American College of Chest Physicians Evidence-Based Clinical Practice Guidelines, 9th edition, 2012, suggest no prophylaxis rather than pharmacological thromboprophylaxis in management of venous thromboembolism (VTE) risk of isolated lower leg injuries distal to knee requiring leg immobilization. Low-molecular-weight heparin (LMWH) is a class of drugs commonly used as antithrombotics in surgery and in case of prolonged bed rest and hypomobility. A 35-year-old obese man with no history of health disease (height, 170 cm; weight, 95 kg; and body mass index, 32...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28029358/analysis-of-an-early-intervention-distal-femoral-resurfacing-implant-for-medial-osteoarthritis
#20
Miriam Chaudhary, Peter S Walker
A design concept was formulated for implants to treat medial osteoarthritis of the knee, using a metal plate resurfacing of the tibia plateau and a plastic bearing embedded in the distal end of the femur. A finite element analysis was carried out to determine whether a metal backing would be needed for the femoral component, and to what extent the stress and strain distribution in the trabecular bone surrounding the implant would match the normal intact condition. The CT scans from three knees scheduled for unicompartmental replacement were selected to generate computer models with variable bone densities in each element to cover a range of density patterns...
October 6, 2016: Journal of Biomechanics
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