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https://www.readbyqxmd.com/read/28742788/computer-assisted-corrective-osteotomy-of-malunited-pediatric-radial-neck-fractures-three-dimensional-postoperative-accuracy-and-clinical-outcome
#1
Lizzy Weigelt, Philipp Fürnstahl, Andreas Schweizer
Neglected or incorrect treatment of pediatric radial neck fractures may lead to symptomatic malunions. Computer-assisted corrective osteotomies with patient-specific guides have been proposed as a promising technique for the reconstruction of malunited long bone deformities. The aim of this study was to evaluate the accuracy and clinical outcome of this technique in children with malunited fractures of the radial neck. Four children (two male, two female; mean age 12 (10-16) years) underwent computer-assisted closing wedge osteotomy of the radial neck...
July 24, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28739300/the-critical-shoulder-angle-is-associated-with-osteoarthritis-in-the-shoulder-but-not-rotator-cuff-tears-a-retrospective-case-control-study
#2
Arnar O Bjarnison, Thomas J Sørensen, Thomas Kallemose, Kristoffer W Barfod
BACKGROUND: In 2013 Moor et al introduced the concept of the critical shoulder angle (CSA) and suggested that an abnormal CSA was a leading factor in development of rotator cuff tear (RCT) and osteoarthritis (OA) of the shoulder. This study assessed whether the CSA was associated with RCT and OA and tested the inter- and intrarater reliability of the CSA when measuring RCT and OA. MATERIALS AND METHODS: The study was performed as a retrospective case-control study...
July 21, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28737727/patterns-associated-with-adult-mandibular-fractures-in-southern-taiwan-a-cross-sectional-retrospective-study
#3
Ko-Chien Lin, Shu-Hui Peng, Pao-Jen Kuo, Yi-Chun Chen, Cheng-Shyuan Rau, Ching-Hua Hsieh
Purpose: This study aimed to determine the patterns associated with adult mandibular fractures from a Level-I trauma center in southern Taiwan. Methods: The data of adult trauma patients admitted between 1 January 2009 and 31 December 2014 were retrieved from the Trauma Registry System and retrospectively reviewed. Fracture site and cause of injury were categorized into groups for comparison, and corresponding odds ratios (ORs) and 95% confidence intervals (CIs) were obtained by multivariate logistic regression...
July 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28735846/gartland-types-iib-and-iii-supracondylar-fractures-of-the-humerus-in-children-is-blount-s-method-effective-and-safe
#4
Thuy-Trang Pham, Franck Accadbled, Abdelaziz Abid, Aissa Ibnoulkhatib, Xavier Bayle-Iniguez, Matthieu Wargny, Jérôme Sales de Gauzy
BACKGROUND: Blount's method is controversial for the treatment of Gartland types IIB and III supracondylar fracture of the humerus (SCFH) in children. The purpose of this study was to evaluate the clinical and radiologic outcomes and the failure and complication rates. METHODS: All types IIB and III SCFH treated with Blount's method from 2003-2013 were included in this retrospective single-center study. Clinical assessment was performed according to Flynn criteria...
July 20, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28735766/risk-factor-analysis-for-predicting-vertebral-body-re-collapse-after-posterior-instrumented-fusion-in-thoracolumbar-burst-fracture
#5
Hae-Dong Jang, Jae Chul Lee, Jae-Wan Soh, Sung-Woo Choi, Hyeung-Kyu Cho, Byung-Joon Shin
BACKGROUND CONTEXT: In the posterior instrumented fusion surgery for thoracolumbar (T-L) burst fracture, early postoperative re-collapse of well-reduced vertebral body fracture could induces critical complications such as correction loss, post-traumatic kyphosis, metal failure, often lead to revision surgery. Furthermore, re-collapse is quite difficult to predict because of the variety of risk factors and no widely accepted accurate prediction systems existed. Although load sharing classification (LSC) has been known to help to decide the need for additional anterior column support, this radiographic scoring system has several critical limitations...
July 20, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28734719/coronoid-reconstruction-using-osteochondral-grafts-a-biomechanical-study
#6
Enrico Bellato, Youngbok Kim, James S Fitzsimmons, Lawrence J Berglund, Alexander W Hooke, Daniel R Bachman, Shawn W O'Driscoll
HYPOTHESIS: The purposes of this study were to test the hypothesis that coronoid deficiency in the setting of posteromedial rotatory instability (PMRI) must be reconstructed to restore articular contact pressures to normal and to compare 3 different osteochondral grafts for this purpose. METHODS: After creation of a anteromedial fracture, six cadaveric elbows were tested under gravity varus stress using a custom-made machine designed to simulate muscle loads and to passively flex the elbow...
July 19, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28725963/robot-assisted-surgery-for-mandibular-angle-split-osteotomy-using-augmented-reality-preliminary-results-on-clinical-animal-experiment
#7
Chaozheng Zhou, Ming Zhu, Yunyong Shi, Li Lin, Gang Chai, Yan Zhang, Le Xie
Mandibular angle split osteotomy (MASO) is a procedure widely used for prominent mandibular angles. However, conventional mandibular plastic surgery is invasive and high risk. It may induce postoperative neurosensory disturbance of the inferior alveolar nerve, fractures and infection due to the complexity of the anatomical structure and the narrow surgical field of view. The success rate of MASO surgery usually depends on the clinical experience and skills of the surgeon. To evaluate the performance of inexperienced plastic surgeons conducting this surgery, a self-developed and constructed robot system based on augmented reality is used...
July 19, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28725919/accurate-guide-wire-of-lag-screw-placement-in-the-intertrochanteric-fractures-a-technical-note
#8
Jiang Li, Liao Wang, Xiaodong Li, Kai Feng, Jian Tang, Xiaoqing Wang
Cephalomedullary fixations are commonly used in the treatment of intertrochanteric fractures. In clinical practice, one of the difficulties is when we exit the guide wire in a wrong position of femoral neck and insert near the hole again, the guide wire often flow into the previous track. This study develops a surgical technique to direct the guide wire to slip away the previous track and slip into a right position. When guide wire is exited to the cortex of femoral, we let the wire in and out at the cortical layer for several times to enlarge the entry hole...
July 19, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28725497/effect-of-screw-perpendicularity-on-compression-in-scaphoid-waist-fractures
#9
Morgan M Swanstrom, Kyle W Morse, Joseph D Lipman, Krystle A Hearns, Michelle G Carlson
Background  Central and perpendicular (PERP) screw orientations have each been described for scaphoid fracture fixation. It is unclear, however, which orientation produces greater compression. Questions/Purposes  This study compares compression in scaphoid waist fractures with screw fixation in both PERP and pole-to-pole (PTP) configurations. PERP orientation was hypothesized to produce greater compression than PTP orientation. Methods  Ten preoperative computed tomography scans of scaphoid waist fractures were classified by fracture type and orientation in the coronal and sagittal planes...
August 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28723779/can-operations-achieve-good-outcomes-in-elderly-patients-with-sanders-ii-iii-calcaneal-fractures
#10
Jun Su, Xuecheng Cao
The aim of this study was to compare the clinical effect of operative treatment and nonoperative treatment for elderly patients with Sanders II-III calcaneal fractures.The study consisted of 60 patients with Sanders II-III calcaneal fractures who were treated in our institution from January 2007 to April 2012. The clinical effect between the operative treatment group of 32 patients and the nonoperative treatment group of 28 patients was studied. Böhler angle, Gissane angle, subtalar joint motion, calcaneal width, and calcaneal height were measured before and after treatment, and these indexes were also measured on the uninjured foot...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28720137/cortical-thickness-in-the-intertrochanteric-region-may-be-relevant-to-hip-fracture-type
#11
Huafeng Zhuang, Yizhong Li, Jinkuang Lin, Donglu Cai, Siqing Cai, Lisheng Yan, Xuedong Yao
BACKGROUND: This study assessed the differences in femoral geometry and bone mineral density between femoral neck fragility fractures and trochanteric fractures. METHODS: One hundred and seventeen patients were divided into femoral neck and trochanteric fracture groups. There were 69 patients with femoral neck fractures, 20 men and 49 women with an average age of 75.1 ± 9.6 years and an average body mass index (BMI) value of 21.6 ± 4.1 kg/m(2). The trochanteric group consisted of 48 patients, 16 men and 32 women with an average age of 78...
July 18, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28719995/biomechanics-of-the-proximal-radius-following-drilling-of-the-bicipital-tuberosity-to-mimic-cortical-button-distal-biceps-repair-technique
#12
Nikhil R Oak, John R Lien, Alexander Brunfeldt, Jeffrey N Lawton
BACKGROUND: A fracture through the proximal radius is a theoretical concern after cortical button distal biceps fixation in an active patient. The permanent, nonossified cortical defect and medullary tunnel is at risk during a fall eliciting rotational and compressive forces. We hypothesized that during simulated torsion and compression, in comparison with unaltered specimens, the cortical button distal biceps repair model would have decreased torsional and compressive strength and would fracture in the vicinity of the bicipital tuberosity bone tunnel...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28718330/anatomic-assessment-of-k-wire-trajectory-for-transverse-percutaneous-fixation-of-small-finger-metacarpal-fractures-a-cadaveric-study
#13
Louis C Grandizio, Amy Speeckaert, Zach Kozick, Joel C Klena
BACKGROUND: The purpose of this cadaveric study is to evaluate the trajectory of percutaneous transverse Kirschner wire (K-wire) placement for fifth metacarpal fractures relative to the sagittal profile of the fifth metacarpal in order to develop a targeting strategy for the treatment of fifth metacarpal fractures. METHODS: Using 12 unmatched fresh human upper limbs, we evaluated the trajectory of percutaneous transverse K-wire placement relative to the sagittal profile of the fifth metacarpal in order to develop a targeting strategy for treatment of fifth metacarpal fractures...
February 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28717792/accelerated-fatigue-resistance-%C3%A2-of-novel-design-histoanatomic-%C3%A2-implant-restorations-made-of-%C3%A2-cad-cam-bilaminar-assemblies
#14
Ivan Molina, Jack Goldberg, Claudia Maziero Volpato, Pascal Magne
OBJECTIVES: Evaluate the fatigue resistance and failure mode of novel-design implant restorations made of histoanatomic computer-assisted design/computer-assisted manufacturing (CAD/CAM) bilaminar bonded assemblies. MATERIAL AND METHODS: 60 screw-retained implant restorations were fabricated. Monolithic restorations were used as a control group (15 lithium disilicate: group CE; and 15 nanofilled composite resin: group CL), and compared with bilaminar restorations (15 dentin-shaped lithium disilicate mesostructures with a bonded nanofilled composite resin veneer: group CEL; and 15 dentin-shaped nanofilled composite resin mesostructures with a bonded lithium disilicate veneer: group CLE)...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28713620/supernumerary-lumbar-ribs-a-rare-occurrence-on-an-adult-african-male-skeleton
#15
Samson Chengetanai, Elsie K Nchabeleng, Nicholas Bacci, Brendon K Billings, Pedzisai Mazengenya
Supernumerary lumbar ribs are usually asymptomatic and discovered incidentally during routine diagnostic radiography. During a routine inventory of the research skeletal repository at the University of the Witwatersrand, a rare case of bilateral supernumerary ribs on the first lumbar vertebra was observed. The skeletal specimen belonged to a 70-year-old African male whose recorded cause of death was esophageal carcinoma. Plain radiography revealed bilateral joint cavities between the transverse processes of the first lumbar vertebra and the supernumerary ribs...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28713455/a-pilot-study-of-the-effect-of-outsole-hardness-on-lower-limb-kinematics-and-kinetics-during-soccer-related-movements
#16
Dong Sun, Qichang Mei, Julien S Baker, Xuewen Jia, Yaodong Gu
The purpose of this study was to investigate the effect of different outsole hardness of turf cleats shoes on the lower limb kinematics and kinetics of soccer players playing on artificial turf. The participants were required to complete tasks of straight running and 45° left sidestep cutting movements, respectively, at the speed of 4.5 ± 0.2 m/s on artificial turf. They were asked to randomly select turf cleats shoes with a soft outsole (SO), medium hardness outsole (MO) and hard outsole (HO). During the stance phase of straight running, peak pressure and force-time integral in medial forefoot (MFF) of players wearing cleats shoes with MO were significantly higher than those wearing cleats shoes with SO...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28711600/double-plating-as-treatment-for-supracondylar-humeral-fractures
#17
J Salvador, P Castillón, I Fuentes, M Bernaus, F Anglès
INTRODUCTION AND OBJECTIVES: Supracondylar humeral fractures represent only about 0.5-1% of all fractures in adults. The objective of this study is to evaluate functional outcome and quality of life in patients treated with open reduction and internal fixation using double plates. MATERIAL AND METHODS: We designed a retrospective descriptive study including 27 supracondylar humeral fractures treated with open reduction and internal fixation using two anatomic plates from January 2005 to September 2012...
July 12, 2017: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/28709833/anterior-reduction-and-fusion-for-treatment-of-massive-tear-drop-fracture-of-axis-combining-with-inferior-endplate-serious-traversed-lesion-a-retrospective-study
#18
Tao Jiang, Hong Yin, Xian-Jun Ren, Tong-Wei Chu, Wei-Dong Wang, Chang-Qing Li
BACKGROUND: Tear drop fracture of axis represents a very small percentage of injuries of the cervical spine, but there is controversy about the treatment method for tear drop fracture of axis, especially when a large avulsed fragment is significant displacement, which combined with the inferior endplate serious traversed lesion of axis. OBJECTIVE: To evaluate the clinical outcome of anterior reduction, graft fusion of C2-3 and plate fixation in the management of massive tear drop fracture of axis combining with inferior endplate serious traversed lesion of axis...
July 11, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28708778/radiographic-investigation-of-the-distal-extension-of-fractures-into-the-articular-surface-of-the-tibia-the-ridefast-study
#19
Lucas S Marchand, Ajinkya A Rane, Zachary M Working, Lance G Jacobson, Erik N Kubiak, Thomas F Higgins, David L Rothberg
OBJECTIVE: To determine whether radiographic measurements are predictive of involvement of the distal tibia articular surface in tibial shaft fractures. DESIGN: Retrospective review. SETTING: Academic level-I trauma hospital. PATIENTS: Two-hundred seventeen patients with tibial shaft fractures distal to the isthmus (AO/OTA: 42-A1-3;42-B1-3;42-C1-3;43-A1-3). INTERVENTION: Analysis of AP and lateral radiographs...
June 22, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28707349/assessment-of-bioresorbable-scaffold-with-a-novel-high-definition-60%C3%A2-mhz-ivus-imaging-system-comparison-with-40-mhz-ivus-referenced-to-optical-coherence-tomography
#20
Kozo Okada, Hideki Kitahara, Yoshiaki Mitsutake, Shigemitsu Tanaka, Takumi Kimura, Paul G Yock, Peter J Fitzgerald, Fumiaki Ikeno, Yasuhiro Honda
BACKGROUND: In vivo assessment of bioresorbable scaffold (BRS) is of growing clinical interest. The novel 60MHz high-definition intravascular ultrasound (HD-IVUS) has been developed to overcome the limitations of conventional 40 MHz IVUS. This study aimed to evaluate the performance and limitations of 60 MHz HD-IVUS compared with 40 MHz IVUS with respect to polymeric-strut visualization, quantitative and qualitative analysis, and feasibility of high-speed pullback in the assessment of BRS...
July 14, 2017: Catheterization and Cardiovascular Interventions
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