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Shan-Qing Yin, Yao-Peng Huang, Miao-Zhong Li, Jia-Dong Pan, Wen-Quan Ding, Xin Wang
OBJECTIVE: To analyze the relationship between radiographic parameters and clinical outcomes of patients with distal radius fractures in elderly patients following conservative treatment, and find the important radiographic parameters with distal radius fractures in elderly patients. METHODS: From May 2012 to May 2015, a retrospective analysis was performed of 45 elderly patients with distal radius fractures treated by conservative treatment, which including 17 males and 28 females with an average age of 64...
February 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Lee James Beever, Kirsty Giles, Richard Lawrence Meeson
OBJECTIVES:  To quantify and evaluate risks of complications attributable to external skeletal fixator (ESF) usage in dogs. METHODS:  A retrospective review of medical records following ESF placement. RESULTS:  Case records of 97 dogs were reviewed; fixator-associated complications occurred in 79/97 dogs. Region of ESF placement was significantly associated with complication development ( p  = 0.005), not complication type ( p  = 0...
February 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
Lester W M Chan, Antony W Gardner, Merng Koon Wong, Kenon Chua, Ernest B K Kwek
INTRODUCTION: Non-prosthetic peri-implant fractures (NPPIFs) are an under-reported entity. Management is challenging because of alterations in anatomy, the presence of orthopaedic implants and phenomena such as stress shielding, disuse osteopenia and fracture remodeling. The aims of this paper were to review patterns of injury, management and outcomes and to propose a classification system to aid further research. MATERIALS AND METHODS: This study is a multi-centered retrospective case series...
March 12, 2018: Archives of Orthopaedic and Trauma Surgery
J Gómez Robledo, M L Díez Lizuaín
We present a 9-year-old girl who suffered a posterior dislocation of the right elbow with a proximal translocation between the ulna and the radius. It is a type of exceptional dislocation which in our case was not accompanied by lesions of the joint surfaces of the elbow unlike most cases already published. This article stresses the importance of making an early diagnosis of this variety of dislocation; this is the best way to prevent it from going unnoticed. The use of Computed Tomography (CT) helped this early diagnosis, enabling an immediate closed orthopaedic reduction and achieving a cure without sequelae...
March 7, 2018: Revista Española de Cirugía Ortopédica y Traumatología
Neva Škrabar, Leslie M Turner, Luisa F Pallares, Bettina Harr, Diethard Tautz
Two subspecies of the house mouse, Mus musculus domesticus and Mus musculus musculus, meet in a narrow contact zone across Europe. Mice in the hybrid zone are highly admixed, representing the full range of mixed ancestry from the two subspecies. Given the distinct morphologies of these subspecies, these natural hybrids can be used for genome-wide association mapping at sufficiently high resolution to directly infer candidate genes. We focus here on limb bone length differences, which is of special interest for understanding the evolution of developmentally correlated traits...
March 9, 2018: Molecular Ecology Resources
Roberto Cameriere, Fiorella Bestetti, Luz Andrea Velandia Palacio, Giulia Riccomi, Edlira Skrami, Valentina Parente, Luigi Ferrante
The aim of this study is to develop a new formula for age estimation in a longitudinal study of a sample from the radiological collection of wrist bones of growing infants, children, and adolescents recorded at the Burlington Growth Centre. A sample of 82 individuals (43 boys and 39 girls), aged between 3 and 16 years, were analyzed with a total of 623 X-rays of left hand-wrist bones by measuring the area of carpal bones and epiphyses of the ulna and radius (Bo) and carpal area (Ca). The intra-class correlation coefficient (ICC) and its 95% confidence interval were used to evaluate intra-observer agreement...
March 7, 2018: International Journal of Legal Medicine
Rosa Kaviani, Irene Londono, Stefan Parent, Florina Moldovan, Isabelle Villemure
The objective of this study was to investigate the effects of mechanical modulation parameters on structural proteins biocomposition and mechanical properties of the growth plate. Establishing these parameters is a crucial step in the development of fusionless treatment of scoliosis. In this study, ulna explants from 4-weeks-old (pubertal) swines were used. The biocomposition was characterized using biochemical content evaluation and immunohistochemistry. Mechanical properties were characterized by fitting the data of the stress relaxation curves using a fibril reinforced biphasic model...
March 1, 2018: Journal of Musculoskeletal & Neuronal Interactions
Anil K Bhat, A M Acharya, Naufal Nahas
Various procedures described for deformity correction in radial longitudinal deficiency (RLD) have encountered problems of stiffness, instability, and inadequate correction. Many surgical modifications of these procedures have still resulted in deformity recurrence, shortening, and damage to the epiphysis. To align the hand with the forearm, the deforming forces from both soft tissues and skeletal growth should be addressed without damaging the ulnar epiphysis or the carpus. To achieve this, we propose a metaphyseal ulnar cuff osteotomy during radialization...
March 2018: Journal of Hand Surgery
Jason A Bleedorn, Troy A Hornberger, Craig A Goodman, Zhengling Hao, Susannah J Sample, Ermias Amene, Mark D Markel, Mary Behan, Peter Muir
Mechanical signals play an integral role in the regulation of bone mass and functional adaptation to bone loading. The osteocyte has long been considered the principle mechanosensory cell type in bone, although recent evidence suggests the sensory nervous system may play a role in mechanosensing. The specific signaling pathways responsible for functional adaptation of the skeleton through modeling and remodeling are not clearly defined. In vitro studies suggest involvement of intracellular signaling through mitogen-activated protein kinase (MAPK), phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt), and mammalian target of rapamycin (mTOR)...
2018: PloS One
Mary F Barbe, Vicky S Massicotte, Soroush Assari, Alexandra M Monroy, Nagat Frara, Michele Y Harris, Mamta Amin, Tamara King, Geneva E Cruz, Steve N Popoff
We have an operant rat model of upper extremity reaching and grasping in which we examined the impact of performing a high force high repetition (High-ForceHR) versus a low force low repetition (Low-ForceHR) task for 18 weeks on the radius and ulna, compared to age-matched controls. High-ForceHR rats performed at 4 reaches/min and 50% of their maximum voluntary pulling force for 2 h/day, 3 days/week. Low-ForceHR rats performed at 6% maximum voluntary pulling force. High-ForceHR rats showed decreased trabecular bone volume in the distal metaphyseal radius, decreased anabolic indices in this same bone region (e...
February 21, 2018: Bone
Bin Li, Zhiping Deng, Xiaohui Niu
PURPOSE: Resection length should be designed before limb salvage surgery of bone tumours. The aim of this study was to evaluate the accuracy of free hand resections. METHODS: Two hundred forty-eight cases were enrolled, including 173 osteosarcomas, 24 giant cell tumours, 16 chondrosarcomas, seven spindle cell sarcomas, 14 bone metastases, three undifferentiated pleomorphic sarcomas, three Ewing sarcomas, two angiosarcomas, and six other bone and soft tissue tumours...
February 21, 2018: International Orthopaedics
Benjamin T K Ding, Kaamini Pillay, Sreedharan Sechachalam
We assessed whether radial shaft fracture obliquity measurements on radiographs could predict intra-operative distal radioulnar joint instability. We also clinically validated previously described predictors of distal radioulnar joint instability, which included a fracture line within 7.5 cm of the lunate fossa, radial shortening >5 mm, and ulna styloid fracture. We retrospectively analysed the radiographs of all surgically managed patients in our unit with radial shaft fractures from 2006 through 2016...
January 1, 2018: Journal of Hand Surgery, European Volume
Jorge G Boretto, Ezequiel E Zaidenberg, Gerardo L Gallucci, Alejandro Sarme, Pablo De Carli
BACKGROUND: Acute management of fractures of the distal ulna that are associated with fractures of the distal radius remains difficult, particularly in the elderly. METHODS: In this study, we investigated whether internal fixation of the distal ulna is associated with a higher rate of complications than resection of the distal ulna in patients older than 70 years. Twenty-four consecutive patients were included in this study, 12 of whom had undergone open reduction and internal fixation (ORIF) of the distal ulna, and 12 who had undergone distal ulna resection...
February 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
M A Valizade Hasanloei, D Vahabzadeh, A Shargh, A Atmani, R Alizadeh Osalou
BACKGROUND & AIMS: Providing adequate and appropriate food and nutrients satisfying the patients' safe nutritional need is one of the most important care practices for critically ill patients (CIPs) in ICU settings, and is strongly related to the patients' safety. METHODS: In this prospective cross-sectional study data were collected from a 52-bed medical intensive care unit on 777 consecutive patients in six different ICUs. The patients' weights and heights were measured based on ulna length, knee height, MAC, Calf C, and Wrist C...
February 2018: Clinical Nutrition ESPEN
Yu-Xin Song, Zeng-Ping Wang, Lin Liu, Wen Xue, Zhong-Yu Hao, Qun-Li Zhang, Wei She, Li-Yang Cai, Hai-Tao Gou, Yao-Wen Qian
Madelung deformity is a rare deformity of forearm and wrist caused by growth disorders of distal radius ulnar and palmar epiphyseal. Current studies showed that its incidence mainly associated with trauma, epiphyseal developmental abnormalities, nutritional disorders and genetic deletion or mutation. The early clinical presentation is not typical, in middle and late time, wrist deformity and weak can appear. Plain film considered as the main means of diagnosis is often lack of early diagnosis significance. Although wrist joint magnetic resonance imaging showing early soft tissue and skeletal abnormalities were used for the early diagnosis of the disease, current domestic study in magnetic resonance imaging of this deformity is less...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Jennifer J Ree, Wendy I Baltzer, Sarah Nemanic
OBJECTIVE: To determine the rate of radiographic healing, complications, vascularization, and bone density after repair of radial and ulnar fractures in dogs <6 kg that were treated with an autogenous cancellous bone graft (BG) or free autologous omentum graft (OG). STUDY DESIGN: Prospective, randomized, controlled clinical trial with owners/radiologists blinded to treatment. ANIMALS: 25 dogs with naturally occurring traumatic radial/ulnar fractures...
February 19, 2018: Veterinary Surgery: VS
Devin K Hoffman, Andrew B Heckert, Lindsay E Zanno
Aetosauria is a clade of heavily armored, quadrupedal omnivorous to herbivorous archosaurs known from the Late Triassic across what was the supercontinent of Pangea. Their abundance in many deposits relative to the paucity of other Triassic herbivores indicates that they were key components of Late Triassic ecosystems. However, their evolutionary relationships remain contentious due, in large part, to their extensive dermal armor, which often obstructs observation of internal skeletal anatomy and limits access to potentially informative characters...
2018: PeerJ
Jun Wu, Hongxi Guo, Xing Liu, Ming Li, Yujiang Cao, Xiangyang Qu, Hai Zhou, Liuqi Weng
Background and purpose: Percutaneous autologous bone marrow transplantation (PABMT) is a minimally invasive therapeutic strategy for the treatment of delayed bone union in adults, which has been confirmed by many studies. However, there is no report on PABMT application in pediatric orthopedic surgery. The aim of this article was to analyze the therapeutic effect of PABMT in children with delayed union of limb bone and its influence in relation to delayed bone union therapy, transplantation period, patients' sex, fracture location, and fracture fixation...
2018: Therapeutics and Clinical Risk Management
Zhen Hua, Jian-Wei Wang, Zhen-Fei Lu, Jian-Wei Ma, Heng Yin
BACKGROUND: The distal radius fracture is one of the common clinical fractures. At present, there are no reports regarding application of the finite element method in studying the mechanism of Colles fracture and the biomechanical behavior when using splint fixation. OBJECTIVE: To explore the mechanism of Colles fracture and the biomechanical behavior when using different fixed splints. METHODS: Based on the CT scanning images of forearm for a young female volunteer, by using model construction technology combined with RPOE and ANSYS software, a 3-D distal radius fracture forearm finite element model with a real shape and bioactive materials is built...
January 30, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
Tom J Crijns, Bonheur A T D van der Gronde, David Ring, Nina Leung
BACKGROUND: Complex regional pain syndrome (CRPS) is frequently diagnosed in patients recovering from surgery or injury. The symptoms and signs included in consensus diagnostic criteria for CRPS are expected after injury. Categorizing symptoms and signs that occur on a continuum as disproportionate or not is subjective and prone to bias. Psychiatrists and psychologists do not diagnose CRPS and instead measure and treat anxiety and catastrophic thinking on its continuum. Given the expected variation in subjective diagnoses such as CRPS, this study addresses factors associated with use of this diagnosis and how it influences care...
February 5, 2018: Clinical Orthopaedics and related Research
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