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Fracture healing

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https://www.readbyqxmd.com/read/28742828/feasibility-of-rigid-3d-image-registration-of-high-resolution-peripheral-quantitative-computed-tomography-images-of-healing-distal-radius-fractures
#1
Joost J A de Jong, Patrik Christen, Ryan M Plett, Roland Chapurlat, Piet P Geusens, Joop P W van den Bergh, Ralph Müller, Bert van Rietbergen
For accurate analysis of bone formation and resorption during fracture healing, correct registration of follow-up onto baseline image is required. A per-fragment approach could improve alignment compared to standard registration based on the whole fractured region. In this exploratory study, we tested the effect of fragment size and displacement on a per-fragment registration, and compared the results of this per-fragment registration to the results of the standard registration in two stable fractures and one unstable fracture...
2017: PloS One
https://www.readbyqxmd.com/read/28741758/stem-cell-derived-exosomes-a-promising-strategy-for-fracture-healing
#2
REVIEW
Zi-Chen Hao, Jun Lu, Shan-Zheng Wang, Hao Wu, Yun-Tong Zhang, Shuo-Gui Xu
OBJECTIVES: To describe the biological characteristics of exosomes and to summarize the current status of stem cell-derived exosomes on fracture healing. Meanwhile, future challenges, limitations and perspectives are also discussed. METHODS: Search and analyze the related articles in pubmed database through the multi-combination of keywords like "stem cells","exosomes","bone regeneration" and "fracture healing". CONCLUSION: Stem cell-derived exosome therapy for fracture healing has been enjoying popularity and is drawing increasing attention...
July 25, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/28741323/-osteosynthesis-with-locking-plate-and-minimally-invasive-technique-for-proximal-humeral-fractures
#3
C Arroyo-Sánchez, C Abril-Gaona, D Rincón-Cardozo
OBJECTIVE: To report our experience in the treatment of 2-3 fragment proximal humeral fractures using a minimally invasive technique that involves an angular-stable locking implant and find out the factors affecting patients outcomes. MATERIAL AND METHODS: Descriptive, prospective study of the case series type. Twenty-two patients, 13 females and 9 males, were operated on between February 2010 and August 2012. Mean age was 50.8 years (24-82 years). Patients were placed in a beach-chair position...
January 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/28739475/posterior-osteosynthesis-with-monoaxial-lateral-mass-screw-rod-system-for-unstable-c1-burst-fractures
#4
Yin-Shun Zhang, Jian-Xiang Zhang, Qing-Guo Yang, Wei Li, Hui Tao, Cai-Liang Shen
BACKGROUND CONTEXT: Surgical treatment for unstable atlas fractures has evolved in recent decades from C1-C2 or C0-C2 fusion to motion-preservation techniques of open reduction and internal fixation (ORIF). However, regardless of transoral or posterior approach, the reduction is still not satisfactory. PURPOSE: The article describes and evaluates a new technique for treating the unstable atlas fractures by using a monoaxial screw-rod system. STUDY DESIGN: This is a retrospective study PATIENT SAMPLE: The sample includes adult patients with unstable C1 fractures treated with a posterior monoaxial screw-rod system...
July 21, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28737593/a-teachable-moment-after-orthopaedic-fracture-in-the-smoking-patient-a-randomized-controlled-trial
#5
Matthew D Baron, Christopher J DeFrancesco, Tiffany C Liu, Frank T Leone, Jaimo Ahn
OBJECTIVES: To assess whether education during hospitalization after an acute fracture changes patient attitudes toward smoking-related complications and to assess whether this change persists into the first outpatient follow-up visit. DESIGN: Prospective, randomized, controlled trial. SETTING: Level 1 trauma center. PATIENTS: Inpatients with fractures who identified as smokers: 40 assessed for inclusion and randomized, 30 completed inpatient assessments, and 20 completed outpatient follow-up...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28736619/the-role-of-orthobiologics-in-foot-and-ankle-surgery-allogenic-bone-grafts-and-bone-graft-substitutes
#6
REVIEW
James Wee, Gowreeson Thevendran
Orthobiologics are biological substances that are used therapeutically for their positive effects on healing skeletal and soft-tissue injuries. The array of orthobiological products currently available to the foot and ankle surgeon is wide, and includes bone allografts, bone substitutes, growth factors, and chondral scaffolds. Nonetheless, despite the surge in interest and usage of orthobiologics, there remains a relative paucity of research addressing their specific applications in foot and ankle surgery. In this review, we attempt to provide an overview of the literature on commonly available allogenic bone grafts and bone substitutes...
June 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28735560/promotion-of-fracture-healing-by-conjugated-linoleic-acid-in-rats
#7
Zhongshu Shan, Zong-Ping Luo, Xiaozhong Shen, Liang Chen
BACKGROUND: The ability of fracture healing in Tibetans is significantly superior to Chinese Hans, which may attribute to factors from diet, altitude to physical conditions. Conjugated linoleic acid (CLA) is an important ingredient in Tibetan diet, playing a role in antioxidation, antiatherosclerosis, and decrease in body fat accumulation.  Methods: This study further quantified CLA effect in fracture healing in rats using combined structural evaluation (X-ray and micro-computed tomography), biomechanical test, and histological examination...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28734986/exogenous-hedgehog-antagonist-delays-but-does-not-prevent-fracture-healing-in-young-mice
#8
Xiaochen Liu, Jennifer A McKenzie, Clayton W Maschhoff, Michael J Gardner, Matthew J Silva
Fracture healing recapitulates many aspects of developmental osteogenesis. The hedgehog (Hh) signaling pathway, essential to skeletal development, is upregulated during fracture healing, although its importance is unclear. Our goal was to assess the functional importance of Hh signaling in endochondral fracture healing. We created closed, transverse diaphyseal femur fractures in mice, stabilized with an intramedullary pin, and administered a systemic Hh inhibitor or vehicle. Because Hh pathway activation is mediated by the receptor Smoothened (Smo), we used the Smo antagonist GDC-0449 (GDC, 50mg/kg, twice daily) to target the pathway...
July 19, 2017: Bone
https://www.readbyqxmd.com/read/28733846/implementation-of-a-standardized-protocol-to-manage-elderly-patients-with-low-energy-pelvic-fractures-can-service-improvement-be-expected
#9
Nikolaos K Kanakaris, Tess Greven, Robert M West, Arie B Van Vugt, Peter V Giannoudis
PURPOSE: The incidence of low energy pelvic fractures (FPFs) in the elderly is increasing. Comorbidities, decreased bone-quality, problematic fracture fixation and poor compliance represent some of their specific difficulties. In the absence of uniform management, a standard operating procedure (SOP) was introduced to our unit, aiming to improve the quality of services provided to these patients. METHODS: A cohort study was contacted to test the impact of (1) using a specific clinical algorithm and (2) using different antiosteoporotic drugs...
July 21, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28733100/long-term-outcomes-after-distal-scaphoid-fractures-a-10-year-follow-up
#10
Martin Clementson, Niels Thomsen, Jack Besjakov, Peter Jørgsholm, Anders Björkman
PURPOSE: The aim of this study was to evaluate the functional, clinical, and radiological outcome 10 years after distal scaphoid fractures. METHODS: From a prospective epidemiological study on posttraumatic radial-sided wrist pain, we evaluated 41 cases of distal scaphoid fractures. All cases had been treated nonsurgically in a thumb spica cast. Patients were examined using radiographs, magnetic resonance imaging and computed tomography at the time of injury and with computed tomography after a median of 10 years (range, 8-11 years)...
July 18, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28732221/atrophic-mandible-fractures-are-bone-grafts-necessary-an-update
#11
Jaime Castro-Núñez, Larry L Cunningham, Joseph E Van Sickels
PURPOSE: The management of atrophic mandibular fractures poses a challenge because of anatomic variations and medical comorbidities associated with elderly patients. The purpose of this article is to review and update the literature regarding the management of atrophic mandible fractures using load-bearing reconstruction plates placed without bone grafts. MATERIALS AND METHODS: We performed a review of the English-language literature looking for atrophic mandibular fractures with or without continuity defects and reconstruction without bone grafts...
June 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28730696/cd34-cells-seeded-in-collagen-scaffolds-promote-bone-formation-in-a-mouse-calvarial-defect-model
#12
Jens Hertweck, Ulrike Ritz, Hermann Götz, Patrick C Schottel, Pol Maria Rommens, Alexander Hofmann
Bone tissue engineering (BTE) holds promise for managing the clinical problem of large bone defects. However, clinical adoption of BTE is limited due to limited vascularization of constructs, which could be circumvented by pre-cultivation of osteogenic and endothelial derived cells in natural-based polymer scaffolds. However, until now not many studies compared the effect of mono- and cocultures pre-seeded in collagen before implantation. We utilized a mouse calvarial defect model and compared five groups of collagen scaffolds: a negative control of a collagen scaffold alone, a positive control treated with BMP-7, monocultures of either human osteoblasts (hOBs) or CD34+ cells, and a coculture of hOB and CD34(+) cells...
July 21, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28730395/dynamic-hip-screw-and-fibular-strut-graft-for-fixation-of-fresh-femoral-neck-fracture-with-posterior-comminution
#13
Adham Elgeidi, Abed El Negery, M Serry Abdellatif, Nabil El Moghazy
INTRODUCTION: Posterior comminution of the femoral neck fracture is a major cause of delayed and non-union owing to the loss of the buttressing effect against the posterior rotation. When a femoral neck fracture with posterior comminution is anatomically reduced, only the anterior portions of the femoral neck fracture surfaces are brought into contact leaving a posterior defect. The purpose of this study was to evaluate the use of fibular strut grafting and dynamic hip screw (DHS) for fresh femoral neck fractures with posterior comminution in young patient less than 50 years...
July 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28726429/-osteoprotective-therapy-with-bisphosphonates-or-denosumab-in-patients-with-multiple-myeloma-benefit-and-risks
#14
Zdeněk Adam, Jan Straub, Marta Krejčí, Luděk Pour, Dagmar Brančíková, Lenka Ostřížková, Viera Sandecká, Martin Štork
Bisphosphonates have been used during the complete treatment of multiple myeloma for more than twenty years. They slow osteolysis and thereby contribute to the improvement of quality of life. Their long-term use, however, is related to 2 serious, usually later appearing complications: osteonecrosis of the jaw, occurring in 6-9 % of patients, and rarer atypical bone fractures. Both these complications are very difficult to heal, and all the more emphasis is therefore laid on prevention. This first of all includes discussion about the risk with the patient, followed by a dental checkup before the commencement of therapy and then repeated during its course, as well as reduced use of these drugs for a necessary period of time...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28723755/comparison-of-free-hand-fluoroscopic-guidance-and-electromagnetic-navigation-in-distal-locking-of-femoral-intramedullary-nails
#15
Bing Han, Zhigang Shi, Yu Fu, Yong Ye, Juehua Jing, Jun Li
BACKGROUND: Although the method has been used widely, one of the greatest challenges for intramedullary nailing is to position the distal locking screw. A new technology, the electromagnetic navigation system, is a radiation-free way to locate the position of the drill bit and provide 3-dimensional real-time feedback of location and orientation of the drill bit relative to the locking holes. The purpose of our study was to evaluate the reliability and efficiency of the free-hand technique compared to the new electromagnetic navigation system...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28720982/single-incision-pediatric-flexible-intramedullary-tibial-nailing
#16
John G Coury, Zachary C Lum, Nicholas P O'Neill, Joseph A Gerardi
BACKGROUND: There has been a trend towards flexible intramedullary nailing for unstable tibial shaft fractures in the pediatric population, traditionally, utilizing a 2-incision technique with passage of one nail medially and one nail laterally. Our study aims to compare a single incision approach for flexible nailing of unstable tibial shaft fractures in pediatric patients to the traditional 2-incision approach. METHODS: Patients were selected for operative fixation if they had a length unstable tibial shaft fracture confirmed by fluoroscopy...
September 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28720305/ecto-5-nucleotidase-cd73-regulates-bone-formation-and-remodeling-during-intramembranous-bone-repair-in-aging-mice
#17
Vivian Bradaschia-Correa, Anne M Josephson, Alexander J Egol, Matthew M Mizrahi, Kevin Leclerc, Jason Huo, Bruce N Cronstein, Philipp Leucht
Ecto-5'-nucleotidase (CD73) generates adenosine, an osteoblast activator and key regulator of skeletal growth. It is unknown, however, if CD73 regulates osteogenic differentiation during fracture healing in adulthood, and in particular how CD73 activity regulates intramembranous bone repair in the elderly. Monocortical tibial defects were created in 46-52-week-old wild type (WT) and CD73 knock-out mice (CD73(-/-)) mice. Injury repair was analyzed at post-operative days 5, 7, 14 and 21 by micro-computed tomography (micro-CT), histomorphometry, proliferating cell nuclear antigen (PCNA) immunostaining, alkaline phosphatase (ALP) and tartrate-resistant acid phosphatase (TRAP) histochemistry...
July 4, 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28719993/comparison-of-treatment-results-for-mallet-finger-fractures-in-children-between-low-intensity-pulsed-ultrasound-stimulation-and-ishiguro-s-method
#18
Tsuyoshi Ota, Soichiro Itoh, Yoshihiko Matsuyama
BACKGROUND: We compared the treatment results for displaced mallet finger fractures in children between low-intensity pulsed ultrasound (LIPUS) stimulation and Ishiguro's method, which involves extension block and arthrodesis of the distal interphalangeal (DIP) joint with pinning. METHODS: Eleven cases (5 females and 6 males; average age, 13.5 years) of mallet finger were operated with Ishiguro's method, and 8 cases (3 females and 5 males; average age, 13.0 years) were treated with LIPUS stimulation...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719990/radiographic-and-clinical-assessment-of-intramedullary-nail-fixation-for-the-treatment-of-unstable-metacarpal-fractures
#19
Ather Mirza, Justin Mirza, Chris Healy, Vishaaq Mathew, Brian Lee
BACKGROUND: The purpose of the article was to evaluate clinical and radiographic outcomes in a case series of unstable metacarpal fractures treated with flexible intramedullary nail (IMN) fixation. METHODS: A total of 55 patients with unstable metacarpal fractures between 2003 and 2010 were treated with IMN fixation and followed for a minimum of 1 year. The outcomes were assessed via a radiological study of longitudinal and angular collapse, Disabilities of the Arm, Shoulder, and Hand (DASH) score, total active range of motion (ROM) of the wrist, and grip strength testing...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719566/midshaft-clavicle-fractures-the-saga-continues-commentary-on-articles-by-marcel-jun-sugawara-tamaoki-md-phd-et-al-treatment-of-displaced-midshaft-clavicle-fractures-figure-of-eight-harness-versus-anterior-plate-osteosynthesis-a-randomized-controlled-trial-and
#20
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