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distal femur fracture

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https://www.readbyqxmd.com/read/27898357/catastrophic-metallosis-after-tumoral-knee-prosthesis-failure-a-case-report
#1
Luca La Verde, Domenico Fenga, Maria Silvia Spinelli, Francesco Rosario Campo, Michela Florio, Michele Attilio Rosa
INTRODUCTION: Metallosis is a condition characterized by an infiltration of periprosthetic soft tissues and bone by metallic debris resulting from wear or failure of joint arthroplasties. PRESENTATION OF CASE: Authors describe a case of a 45-year-old man treated for an osteosarcoma of the distal femur with a modular prosthesis when he was 18 years old, he developed massive metallosis with skin dyspigmentation after 17 years. His medical\surgical history was remarkable for a left tumoral knee prosthesis implanted 21 years ago...
November 18, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27891409/distal-femur-locking-plate-the-answer-to-all-distal-femoral-fractures
#2
Jagandeep Singh Virk, Sudhir Kumar Garg, Parmanand Gupta, Vivek Jangira, Jagdeep Singh, Sudhir Rana
INTRODUCTION: Good results have been published by researchers with distal femur nail, dynamic condylar screw and even addition of a medial plate to a distal femur locking plate for treating distal femur fractures. By this study, we explore the capability of a distal femur locking plate to counter distal femur fractures of extra- articular, partial or intra- articular nature. Positive results have been published by various groups from all over the world. AIM: To study the functional and radiological outcome of distal femoral fractures in skeletally mature patients treated by open reduction and internal fixation with distal femur locking plate...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27882811/the-ao-pediatric-comprehensive-classification-of-long-bone-fractures-pccf-part-ii
#3
Alexander Joeris, Nicolas Lutz, Andrea Blumenthal, Theddy Slongo, Laurent Audigé
Background and purpose - To achieve a common understanding when dealing with long bone fractures in children, the AO Pediatric Comprehensive Classification of Long Bone Fractures (AO PCCF) was introduced in 2007. As part of its final validation, we present the most relevant fracture patterns in the lower extremities of a representative population of children classified according to the PCCF. Patients and methods - We included patients up to the age of 17 who were diagnosed with 1 or more long bone fractures between January 2009 and December 2011 at either of 2 tertiary care university hospitals in Switzerland...
November 24, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27871553/fascia-iliaca-block-associated-only-with-deep-sedation-in-high-risk-patients-taking-p2y12-receptor-inhibitors-for-intramedullary-femoral-fixation-in-intertrochanteric-hip-fracture-a-series-of-3-cases
#4
Carlos Rodrigues Almeida, Emília Milheiro Francisco, Vítor Pinho-Oliveira, José Pedro Assunção
OBJECTIVE: We present a series of 3 cases in which the impact in outcome was, first of all, related to the capacity to offer early and safer treatment to some hip fracture high-risk patients using a fascia iliaca block (FIB; ropivacaine 0,5% 20 cc and mepivacaine 1,3% 15 cc, given 30 minutes before incision) associated only with deep sedation, contributing to better practice and outcome. CASE REPORTS: All elderly patients were American Society of Anesthesiologists IV patients, under P2Y12 receptor inhibitors, suffering from an intertrochanteric fracture, and purposed for intramedullary femoral fixation (IMF)...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27867137/minimally-invasive-internal-fixation-of-distal-femur-fractures
#5
REVIEW
Guy Piétu, Mathieu Ehlinger
Fractures of the distal femur remain a daunting challenge. Since 1970, operative treatment has been recommended. Unfortunately it is fraught with complications, and techniques have been developed to limit incidence of non-union, infection and stiffness. A soft-tissue friendly approach is the key point, with minimally invasive surgery as the ultimate goal: its biological and anatomical advantages have; been demonstrated, but clinical studies have been less convincing, being based on historical series. At present, retrograde nailing and minimally invasive percutaneous plate osteosynthesis (ideally by locking plate) are the two main techniques...
November 17, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27832015/intramedullary-nailing-with-supplemental-plate-and-screw-fixation-of-long-bones-of-patients-with-osteogenesis-imperfecta-operative-technique-and-preliminary-results
#6
Jeanne M Franzone, Richard W Kruse
Although intramedullary fixation is the standard form of surgical fixation of the long bones of children with osteogenesis imperfecta (OI), it remains fraught with complications. Implant breakage, implant cut out, long bone fracture, nonunion, and rod bending have all been described as complications of intramedullary long bone fixation in children with OI. Supplemental fixation techniques represent an attempt to decrease these risks of surgical implant failure of intramedullary devices. A supplemental plate and screw construct at a fracture or an osteotomy site in addition to an intramedullary device in the long bone segment is one such form of supplemental fixation...
November 9, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27818743/the-clinical-contribution-of-cortical-porosity-to-fragility-fractures
#7
REVIEW
Åshild Bjørnerem
Cortical bone is not compact; rather it is penetrated by many Haversian and Volkmann canals for blood supply. The lining of these canals are the intracortical bone surfaces available for bone remodeling. Increasing intracortical bone remodeling increases cortical porosity. However, cortical bone loss occurs more slowly than trabecular loss due to the fact that less surface per unit of bone matrix volume is available for bone remodeling. Nevertheless, most of the bone loss over time is cortical because cortical bone constitutes 80% of the skeleton, and the relative proportion of trabecular bone diminishes with advancing age...
2016: BoneKEy Reports
https://www.readbyqxmd.com/read/27814663/change-in-fracture-risk-and-fracture-pattern-after-bariatric-surgery-nested-case-control-study
#8
Catherine Rousseau, Sonia Jean, Philippe Gamache, Stéfane Lebel, Fabrice Mac-Way, Laurent Biertho, Laëtitia Michou, Claudia Gagnon
OBJECTIVE:  To investigate whether bariatric surgery increases the risk of fracture. DESIGN:  Retrospective nested case-control study. SETTING:  Patients who underwent bariatric surgery in the province of Quebec, Canada, between 2001 and 2014, selected using healthcare administrative databases. PARTICIPANTS:  12 676 patients who underwent bariatric surgery, age and sex matched with 38 028 obese and 126 760 non-obese controls...
July 27, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27812774/optimum-stem-length-for-mitigation-of-periprosthetic-fracture-risk-following-primary-total-knee-arthroplasty-a-finite-element-study
#9
Noel Conlisk, Colin R Howie, Pankaj Pankaj
PURPOSE: Due to age-related changes to the material properties and thinning of the cortical bone structure, older patients with osteoporosis may be at greater risk of femoral fracture following total knee arthroplasty. This study investigates whether there is a potential role for stemmed prostheses in such scenarios to help mitigate peri-implant fracture risk, and if so what should the optimum stem length be to balance surgical bone loss with reduced fracture risk. METHODS: Finite element models of the distal femur implanted with four different implant types: a posterior stabilising implant, a total stabilising implant with short stem (12 mm × 50 mm), a TS implant with medium stem (12 mm × 75 mm), and a TS implant with long stem (12 mm × 100 mm), were developed and analysed in this study...
November 3, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27802890/the-use-of-interfragmentary-positional-screw-in-minimally-invasive-plate-osteosynthesis-for-simple-distal-femur-fractures-in-elderly-patients-a-retrospective-single-centre-pilot-study
#10
Jun Young Chung, Jae Ho Cho, Heon Ju Kweon, Hyung Keun Song
INTRODUCTION: Minimally invasive plate osteosynthesis (MIPO) using locking plates has been used in distal femur fractures, but various problems, such as nonunion, malalignment, and implant failure, have been reported. Simple fractures sometimes have poorer outcomes than complex fractures. We studied elderly patients with simple fracture patterns who underwent open reduction followed by placement of a single positional screw to hold the reduced interfragmentary gap, and compared these cases with patients who underwent surgery using conventional MIPO techniques...
December 2016: Injury
https://www.readbyqxmd.com/read/27802795/femoral-fracture-following-acute-trauma-in-a-female-collegiate-swimmer
#11
Jonathan Hernandez, Seth Gamradt, Drew Morcos
The patient was a 20-year-old Division I female collegiate swimmer who presented to the athletic training room following a traumatic onset of right knee pain. She was immediately transferred to the hospital for diagnostic imaging. Knee radiographs revealed a minimally displaced fracture of her right distal femur that extended from her intercondylar notch to the lateral aspect of her distal femoral metaphysis, while computed tomography and magnetic resonance imaging scans revealed the intra-articular nature of the fracture...
November 2016: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/27802093/prepubertal-impact-of-protein-intake-and-physical-activity-on-weight-bearing-peak-bone-mass-and-strength-in-males
#12
Thierry Chevalley, Jean-Philippe Bonjour, Marie-Claude Audet, Fanny Merminod, Bert van Rietbergen, Rene Rizzoli, Serge Ferrari
CONTEXT: Peak bone mass (PBM) and strength are important determinants of fragility fracture risk in later life. During growth bone is responsive to changes in nutrition and physical activity (PA), particularly when occuring before pubertal maturation. OBJECTIVE: In prepubertal healthy boys, protein intake (Prot-Int) enhances the impact of PA on weight-bearing bone. We hypothesized that the synergism between Prot-Int and PA on proximal femur as recorded at mean age of 7...
November 1, 2016: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/27799817/percutaneous-cementoplasty-for-painful-osteolytic-distal-femur-metastases-a-case-report
#13
Mingxing Lei, Yaosheng Liu, Shaoxing Yang, Weigang Jiang, Yuncen Cao, Shubin Liu
Percutaneous cementoplasty has been shown to immediately restore the mechanical stability of affected bones, prevent further risk of bone fractures, and allow immediate weight bearing. It is emerging as one of the most promising procedures for patients with painful bone metastasis who are unsuitable for surgery or who show resistance to radiotherapy and/or analgesic therapies. This study aimed at describing the procedure, indications, and benefits of percutaneous cementoplasty for painful osteolytic distal femur metastases...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27796050/inflammatory-bowel-disease-in-a-rodent-model-alters-osteocyte-protein-levels-controlling-bone-turnover
#14
Corinne E Metzger, A Narayanan, D C Zawieja, S A Bloomfield
Bone loss is a common comorbidity of inflammatory bowel disease (IBD), leading to elevated fracture risk in these patients. Inflammatory factors associated with IBD cause increased bone resorption and decreased bone formation with multiple factors implicated as instigators of these alterations. In this project, we examined the influence of IBD on osteocytes proteins in male rats (2 months old) divided into two groups: induced gut inflammation via TNBS enema and vehicle control. We examined the prevalence of two pro-inflammatory cytokines, tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6), an anti-inflammatory cytokine, interleukin-10 (IL-10), the anabolic factor insulin-like growth factor-I (IGF-I), osteoclastogenesis regulators RANKL and OPG, and the bone formation inhibitor sclerostin in osteocytes in three bone compartments 4 weeks after initiation of gut inflammation...
October 31, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/27790391/a-case-of-distal-femur-medial-condyle-hoffa-type-ii-c-fracture-treated-with-headless-screws
#15
Chirag Kapoor, Aditya Merh, Malkesh Shah, Paresh Golwala
Coronal plane fractures of the distal femur are less frequent compared to sagittal plane fractures. They were described by Hoffa in 1904 and are known as Hoffa fractures (AO type B3). They are isolated fractures of the femoral condyle and rare in occurrence. The objective in the treatment of these fractures is to achieve anatomical reduction of the articular surface and a stable fixation to prevent joint damage in future and prevent post-traumatic arthritis of the joint. We report the case of a young male patient who had a rare type of medial Hoffa fracture which was treated by open reduction and internal fixation using headless Herbert screws using a posterior approach...
September 23, 2016: Curēus
https://www.readbyqxmd.com/read/27789875/biomechanical-analysis-of-the-cephalomedullary-nail-versus-the-trochanteric-stabilizing-plate-for-unstable-intertrochanteric-femur-fractures
#16
David Walmsley, Bruce Nicayenzi, Paul Rt Kuzyk, Alan Machin, Habiba Bougherara, Emil H Schemitsch, Radovan Zdero
Unstable intertrochanteric fractures are commonly treated with a cephalomedullary nail due to high failure rates with a sliding hip screw. The Omega3 Trochanteric Stabilizing Plate is a relatively new device that functions like a modified sliding hip screw with a proximal extension; however, its mechanical properties have not been evaluated. This study biomechanically compared a cephalomedullary nail, that is, Gamma3 Nail against the Omega3 plate. Unstable intertrochanteric fractures were created in 24 artificial femurs...
October 26, 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/27779272/effect-of-monocortical-and-bicortical-screw-numbers-on-the-properties-of-a-locking-plate-intramedullary-rod-configuration-an-in-vitro-study-on-a-canine-femoral-fracture-gap-model
#17
Elinor J Field, Kevin Parsons, Julie A Etches, Katie Hamilton, Neil J Burton
OBJECTIVES: To evaluate the effect of varying the number and configuration of locking bicortical and monocortical screws on a plate-rod construct using a mid-diaphyseal femoral ostectomy model. METHODS: Thirty Greyhound femurs were assigned to six groups (A-F). An intramedullary pin was placed in each bone following which a 3.5 mm locking plate was applied with six differing locking screw configurations. Groups A to C had one bicortical screw in the most proximal and distal plate holes and one to three monocortical locking screws in the proximal and distal fragments...
October 25, 2016: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/27776664/subchondral-insufficiency-fracture-of-the-knee-a-recognizable-associated-soft-tissue-edema-pattern-and-a-similar-distribution-among-men-and-women
#18
Andrew S Wilmot, Alexander T Ruutiainen, Prashant T Bakhru, Mark E Schweitzer, Nogah Shabshin
OBJECTIVE: Primary: to describe the presence and pattern of soft tissue edema in subchondral insufficiency fractures of the knee (SIFK). Secondary: to investigate the gender distribution and identify factors associated with disease progression. METHODS: MR images of 74 SIFKs in 74 patients were retrospectively reviewed for soft tissue edema presence and location, meniscal tears and extrusion and synovitis. The clinical records were reviewed for age, gender, and BMI...
November 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27768679/medial-knee-approach-an-anatomical-study-of-minimally-invasive-plate-osteosynthesis-in-medial-femoral-condylar-fracture
#19
Norachart Sirisreetreerux, Babar Shafiq, Greg M Osgood, Erik A Hasenboehler
OBJECTIVES: To determine the location of distal medial neurovascular structures, identifying a medial "safe zone" for minimally invasive plate osteosynthesis to treat displaced femoral condylar fractures. METHODS: Eleven uninjured lower-half torsos were dissected on the bilateral medial lower thigh. A longitudinal incision was made at the midsagittal plane of the medial thigh starting 1 cm proximal to the knee joint and extending to the proximal one-third of the femur...
November 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27725872/dioscin-stimulates-differentiation-of-mesenchymal-stem-cells-towards-hypertrophic-chondrocytes-in-vitro-and-endochondral-ossification-in-vivo
#20
Murong You, Juehua Jing, Dasheng Tian, Jun Qian, Guangrong Yu
Dioscin has been shown to play important roles in suppression of osteoclast maturation. It is proposed as a potential natural product for the treatment of osteoclast-related diseases. We hypothesized in this study that treatment of dioscin on bone marrow mesenchymal stem cells (BMSCs) could increase the osteo-chondrogenic differentiation of BMSCs and promote endochondral ossification of BMSCs in bone fracture environment. BMSCs were extracted from femur and tibia of male C57b mice. Stemness of BMSCs was studied by performing proliferation assay and multilineage differentiation...
2016: American Journal of Translational Research
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