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https://www.readbyqxmd.com/read/28538289/a-three-dimensional-analysis-of-the-fracture-planes-in-pediatric-lateral-humeral-condyle-fractures-for-image-based-pin-positioning-during-fixation
#1
Do Young Park, Jae Ho Cho, Doo-Hyung Lee, Wan-Sun Choi, Jun Young Bang, Xiang Yun Yin
OBJECTIVE: To determine the 3 dimensional morphology of pediatric lateral condylar physeal fractures using 3-dimensional computed tomography (3D-CT) and to identify optimal pin positions for percutaneous pinning. DESIGN: Prospective case series of consecutively treated patients SETTING:: Tertiary university hospital setting. PATIENTS: Preoperative 3D-CTs in pediatric surgical candidates diagnosed with lateral condylar physeal fractures INTERVENTION:: Closed reduction and percutaneous pinning was performed...
May 17, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28529010/aneurysmal-bone-cyst-healing-response-with-intramedullary-lengthening-nail
#2
Ahmet Emrah Acan, Onur Basci, Hasan Havitcioglu
We report the treatment process of a pediatric patient with deformity and shortening in the arm after a recurrent aggressive aneurysmal bone cyst (ABC) in the proximal humerus. The patient was treated with curettage of the lesion and lengthening on an intramedullary nail following an osteotomy just distal to the ABC. The period of lengthening was approximately 50 days. At the end of the treatment the lengthening goal was achieved without any neurovascular complication. There was a minimal loss in shoulder hyperabduction due to the deformity of the humeral head...
May 18, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28509822/fracture-prevention-in-the-orthopaedic-environment-outcomes-of-a-coordinator-based-fracture-liaison-service
#3
Earl R Bogoch, Victoria Elliot-Gibson, Dorcas Beaton, Joanna Sale, Robert G Josse
BACKGROUND: Fracture liaison services focus on secondary fracture prevention by identifying patients at risk for future fracture and initiating appropriate evaluation, risk assessment, education, and therapeutic intervention. This study describes key clinical outcomes including bone mineral densitometry, physician assessment, and pharmacotherapy initiation in pharmacotherapy-naïve patients undergoing treatment for fragility fracture in a Canadian fracture liaison service. METHODS: We determined rates of post-fracture investigation and treatment for inpatients and outpatients with a fragility fracture seen in a coordinator-based fracture liaison service at an urban university trauma hospital...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28507780/current-concepts-in-elbow-arthroplasty
#4
REVIEW
Daniel Bachman, Akin Cil
Distal humeral replacement and the total elbow are two commonly-used arthroplastiesEach prosthesis has evolving indications and surgical techniquesRecent changes in device design and implantation methods are due to biomechanical and clinical outcome-based researchNew prostheses and methods provide: better elbow kinematics, more durable bearings and longer-lasting joint replacement potential Cite this article: EFORT Open Rev 2017;2:83-88. DOI: 10.1302/2058-5241.2.160064.
April 2017: EFORT Open Rev
https://www.readbyqxmd.com/read/28502605/transphyseal-separation-of-the-distal-humerus-in-newborns
#5
Cosimo Gigante, Sunil Gurpur Kini, Carlo Origo, Andrea Volpin
Obstetric traumatic separation of the distal humeral epiphysis is a very uncommon injury, which presents a diagnostic challenge. These case serials reviewed the functional outcomes of 5 patients who had sustained a fracture-separation of the distal humeral epiphysis at birth. The diagnosis was made at a mean time of 40.8 h after delivery. All the patients were treated with gentle close manipulation, reduction under fluoroscopy and above-elbow cast application. After discharge, the patients were followed up for a mean of 30 months...
April 14, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28499398/biomechanical-evaluation-of-a-novel-dualplate-fixation-method-for-proximal-humeral-fractures-without-medial-support
#6
Yu He, Yaoshen Zhang, Yan Wang, Dongsheng Zhou, Fu Wang
BACKGROUND: Comminuted fractures of the proximal humerus are generally treated with the locking plate system, and clinical results are satisfactory. However, unstable support of the medial column results in varus malunion and screw perforation. We designed a novel medial anatomical locking plate (MLP) to directly support the medial column. Theoretically, the combined application of locking plate and MLP (LPMP) would directly provide strong dual-column stability. We hypothesized that the LPMP could provide greater construct stability than the locking plate alone (LP), locking plate combined with a fibular graft (LPSG), and locking plate combined with a distal radius plate (LPDP)...
May 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28495573/spatial-mapping-of-humeral-head-bone-density
#7
Hamidreza Alidousti, Joshua W Giles, Roger J H Emery, Jonathan Jeffers
BACKGROUND: Short-stem humeral replacements achieve fixation by anchoring to the metaphyseal trabecular bone. Fixing the implant in high-density bone can provide strong fixation and reduce the risk of loosening. However, there is a lack of data mapping the bone density distribution in the proximal humerus. The aim of the study was to investigate the bone density in proximal humerus. METHODS: Eight computed tomography scans of healthy cadaveric humeri were used to map bone density distribution in the humeral head...
May 8, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28479258/triceps-sparing-extra-articular-step-cut-olecranon-osteotomy-for-distal-humeral-fractures-an-anatomic-study
#8
Matthias A Zumstein, Sumit Raniga, Remy Flueckiger, Lorenzo Campana, Beat K Moor
BACKGROUND: This anatomic study investigated the distal humeral articular surface exposure achievable through a triceps-sparing oblique extra-articular osteotomy of the olecranon with a step-cut modification compared with the anconeus flap transolecranon apex distal chevron osteotomy. In addition, the bone contact surface areas of the osteotomized surfaces after transolecranon and extra-articular osteotomies were compared. METHODS: Seven pairs of fresh adult cadaveric elbow joints were examined...
May 4, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28459772/time-from-injury-to-surgical-fixation-of-diaphyseal-humerus-fractures-is-not-associated-with-an-increased-risk-of-iatrogenic-radial-nerve-palsy
#9
Kristin Shoji, Marilyn Heng, Mitchel B Harris, Paul T Appleton, Mark S Vrahas, Michael J Weaver
OBJECTIVES: to determine if time from injury to fixation of diaphyseal humeral fractures and nonunions is associated with the risk of iatrogenic radial nerve palsy. DESIGN: Retrospective review. SETTING: Two level 1 trauma centers. PATIENTS/PARTICIPANTS: Between 2001 and 2015, 325 patients were treated with fixation of a humerus fracture or humerus nonunion who had documented intact radial nerve function pre-operatively...
April 25, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28451024/-distal-hypoperfusion-ischemic-syndrome-complicating-a-humeral-cephalic-arteriovenous-fistula
#10
Youssef Alaoui Lamrani, Chakib Maaroufi
No abstract text is available yet for this article.
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28450102/an-in%C3%A2-vitro-study-of-the-role-of-implant-positioning-on-ulnohumeral-articular-contact-in-distal-humeral-hemiarthroplasty
#11
Roxanna E Abhari, Ryan Willing, Graham J W King, James A Johnson
PURPOSE: To investigate the effect of implant positioning on ulnohumeral contact using patient-specific distal humeral (DH) implants. METHODS: Seven reverse-engineered DH implants were manufactured based on computed tomography scans of their osseous geometry. Native ulnae were paired with corresponding native humeri and custom DH implants in a loading apparatus. The ulna was set at 90° of flexion and the humeral component (either native bone or reverse-engineered implant) was positioned from 5° varus to 5° valgus in 2...
April 25, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28437841/characterizing-the-evolution-of-wide-gauge-features-in-stylopodial-limb-elements-of-titanosauriform-sauropods-via-geometric-morphometrics
#12
Paul V Ullmann, Matthew F Bonnan, Kenneth J Lacovara
Wide-gauge posture of titanosauriform sauropods remains an enigmatic peculiarity among terrestrial vertebrates. Here, two-dimensional geometric morphometrics and thin plate splines analyses were used to quantitatively analyze shape differences among sauropodomorph humeri and femora to identify how these elements may differ according to body gauge. Results demonstrate that titanosauriforms generally possess proportionately gracile humeri in comparison to other sauropods, with relatively more medially oriented humeral heads and proximally located deltopectoral crests...
April 24, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28422967/craniodental-and-humeral-morphology-of-a-new-species-of-masrasector-teratodontinae-hyaenodonta-placentalia-from-the-late-eocene-of-egypt-and-locomotor-diversity-in-hyaenodonts
#13
Matthew R Borths, Erik R Seiffert
Hyaenodonta is a diverse clade of carnivorous mammals that were part of terrestrial faunas in the Paleogene of Eurasia and North America, but the oldest record for the group is Afro-Arabian, making the record there vital for understanding the evolution of this wide-spread group. Previous studies show an ancient split between two major clades of hyaenodonts that converged in hypercarnivory: Hyainailourinae and Hyaenodontinae. These clades are each supported by cranial characters. Phylogenetic analyses of hyaenodonts also support the monophyly of Teratodontinae, an Afro-Arabian clade of mesocarnivorous to hypercarnivorous hyaenodonts...
2017: PloS One
https://www.readbyqxmd.com/read/28413658/subcutaneous-metastasis-arising-from-gastric-cancer-a-case-report
#14
Tsutomu Namikawa, Eri Munekage, Masaya Munekage, Hiromichi Maeda, Tomoaki Yatabe, Hiroyuki Kitagawa, Michiya Kobayashi, Kazuhiro Hanazaki
A 59-year-old man was referred to the Kochi Medical School Hospital due to left shoulder pain. Physical examination revealed a nodular, painful mass lesion in the subcutaneous tissue of the right chest wall, with a diameter of ~2 cm. Esophagogastroduodenoscopy revealed a large ulcerated tumor in the lower gastric body near the lesser curvature, and biopsy specimens of the gastric and humeral lesions revealed poorly differentiated adenocarcinoma. Abdominal computed tomography revealed multiple low-density lesions in the liver and a well-defined, 2...
April 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28409134/anatomical-variations-of-pronator-teres-muscle-predispositional-role-for-nerve-entrapment
#15
Edie Benedito Caetano, Luiz Ângelo Vieira, Fábio Antonio Anversa Sprovieri, Guilherme Camargo Petta, Maurício Tadeu Nakasone, Bárbara Lívia Correa Serafim
OBJECTIVE: To assess the anatomical variations of the pronator teres muscle (PTM) and its implication in the compression of the median nerve, which passes through the humeral and ulnar heads of the PTM. METHODS: For the present study, 100 upper limbs from human cadavers from the anatomy laboratory were dissected. Forty-six specimens were male and four, female, whose aged ranged from 28 to 77 years; 27 were white and 23, non-white. A pilot study consisting of six hands from three fresh cadaver dissections was conducted to familiarize the authors with the local anatomy; these were not included in the present study...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28384948/clinico-radiological-outcome-analysis-of-parallel-plating-with-perpendicular-plating-in-distal-humeral-intra-articular-fractures-prospective-randomised-study
#16
Ramachandran Govindasamy, Vishal Shekhawat, Ramesh Chandra Banshiwal, Rajender Kumar Verma
INTRODUCTION: The distal humeral fractures are common fractures of upper limb and are difficult to treat. These fractures, if left untreated or inadequately treated, leads to poor outcomes. Management of distal humeral fractures are pertained to many controversies and one among them is position of plates. AIM: To compare the clinical and radiological outcomes in patients with intra-articular distal humerus fractures, treated using parallel and perpendicular double plating methods...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28375524/distal-humeral-hemiarthroplasty-versus-total-elbow-arthroplasty-for-acute-distal-humeral-fractures
#17
Rajesh Rangarajan, Rick F Papandrea, Akin Cil
For acute distal humeral fractures not amenable to open reduction and internal fixation, total elbow arthroplasty has become an established alternative. However, lifelong activity restrictions designed to prevent early mechanical failure make this a poor option for some patients. This has led to a renewed interest in distal humeral hemiarthroplasty. Using modern implants and techniques, distal humeral hemiarthroplasty has shown outcomes comparable to those of total elbow arthroplasty at short- to mid-term follow-up, with an overall higher but different complication rate...
January 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/28359639/lateral-para-olecranon-approach-for-the-treatment-of-distal-humeral-fracture
#18
Takuji Iwamoto, Taku Suzuki, Noboru Matsumura, Masaya Nakamura, Morio Matsumoto, Kazuki Sato
PURPOSE: To assess the outcomes of the lateral para-olecranon triceps-splitting approach for the treatment of distal humeral fracture. METHODS: Ten patients (3 males, 7 females) with a mean age of 59 years were retrospectively reviewed. There were 2 A2, 3 C1, and 5 C2 fractures according to the AO/ASIF classification. Types B3 and C3 fractures were excluded from this study because the olecranon osteotomy approach was indicated to visualize the anterior fragment...
May 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28357556/ossification-center-of-the-humeral-shaft-in-the-human-fetus-a-ct-digital-and-statistical-study
#19
Marcin Wiśniewski, Mariusz Baumgart, Magdalena Grzonkowska, Bogdan Małkowski, Arnika Wilińska-Jankowska, Zygmunt Siedlecki, Michał Szpinda
PURPOSE: The knowledge of the development of the humeral shaft ossification center may be useful both in determining the fetal stage and maturity and for detecting congenital disorders, as well. This study was performed to quantitatively examine the humeral shaft ossification center with respect to its linear, planar, and volumetric parameters. MATERIALS AND METHOD: Using methods of CT, digital image analysis, and statistics, the size of the humeral shaft ossification center in 48 spontaneously aborted human fetuses aged 17-30 weeks was studied...
March 29, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28349182/biomechanical-comparison-of-anatomical-plating-systems-for-comminuted-distal-humeral-fractures
#20
Patrick A Varady, Christian von Rüden, Markus Greinwald, Sven Hungerer, Robert Pätzold, Peter Augat
PURPOSE: Six different mono-axial and poly-axial distal humeral plating systems with an anatomical plate design were compared. The aim of the biomechanical tests was to examine differences regarding system stiffness, median fatigue limit, and failure mechanisms. METHODS: Different configurations of two double plate fixation systems by two manufacturers for the treatment of complex distal humeral fractures (AO/OTA type C2.3) were biomechanically tested in a physiologically relevant setup...
March 27, 2017: International Orthopaedics
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