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https://www.readbyqxmd.com/read/28224272/biomechanical-evaluation-of-reconstruction-plates-with-locking-nonlocking-and-hybrid-screws-configurations-in-calcaneal-fracture-a-finite-element-model-study
#1
Ching-Hsuan Chen, Chinghua Hung, Yu-Chun Hsu, Chen-Sheng Chen, Chao-Ching Chiang
Calcaneal fractures are the most common fractures of the tarsal bones. The stability of fixation is an important factor for successful reconstruction of calcaneal fractures. The purpose of this study was to analyze the biomechanical influence of plate fixation with different combinations of locking and nonlocking screws during early weight-bearing phase. A three-dimensional FE foot model was established using ANSYS software, which comprised bones, cartilages, plantar fascia, and soft tissue. Calcaneal plate was fixed with whole locking (WLS), whole nonlocking (WNS), and hybrid screw configurations for FE analysis...
February 21, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28222067/designation-and-validation-of-a-posterior-anatomical-plate-for-the-anterior-column-of-the-acetabulum
#2
Lifeng Zhang, Chuangxin Lin, Shenglu Cao, Yiran Wang, Geng Peng, Yongqiang Xu, Yongzeng Feng, Gang Wang
BACKGROUND Surgical treatment of acetabular fractures is one of the greatest challenges for orthopedic surgeons. Fixation of most displaced fractures requires extensive exposure, which may lead to complications, including blood loss, neural or vascular injury, postoperative infection, wound healing problems, and heterotopic bone formation. MATERIAL AND METHODS This study was conducted to certify an anatomic plate with an anterior column lag screw guiding device to repair the posterior acetabulum. Complete pelvic spiral computed tomography (CT) scan data were collected from 56 patients...
February 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28219416/the-safe-screw-path-along-inferior-border-of-the-arcuate-line-at-acetabular-area-an-anatomical-study-based-on-ct-scans
#3
Chun Bi, Jiandong Wang, Xiaoxi Ji, Zhijian Ma, Fang Wang, Xiangsen Zeng, Dongmei Wang, Qiugen Wang
BACKGROUND: Misplaced screw during the internal fixation of acetabular fractures may penetrate the hip joint which might cause chondrolysis and traumatic osteoarthritis in the future. This study aims to acquire the safe path for screw insertion along inferior border of the arcuate line fixation route at acetabular area. METHODS: Computed tomography (CT) scans of 98 patients without pelvic trauma were rebuilt for three-dimensional models of pelvis. After depicting the fixation route curve, five cross-sections perpendicularly to the curve were established from the anterior of pelvis to the posterior along inferior border of the arcuate line...
February 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28218215/correlation-between-condylar-fracture-pattern-after-parasymphyseal-impact-and-condyle-morphological-features-a-retrospective-analysis-of-107-chinese-patients
#4
Lu Han, Ting Long, Wei Tang, Lei Liu, Wei Jing, Wei-Dong Tian, Jie Long
BACKGROUND: The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fracture patterns and condylar morphological characteristics. METHODS: We conducted a retrospective analysis of 107 patients admitted to the West China Hospital of Stomatology for bilateral condylar fractures caused by parasymphyseal impact. The patients were divided into five groups according to the type of condylar fracture...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28216750/early-results-of-thoraco-lumbar-burst-fracture-treatment-using-selective-corpectomy-and-rectangular-cage-reconstruction
#5
Bowei Liang, Guofeng Huang, Luobing Ding, Liangqi Kang, Mo Sha, Zhenqi Ding
BACKGROUND: Subsidence and late fusion are commonly observed in anterior subtotal corpectomy and reconstruction for treating thoracolumbar burst fractures. The subsidence rate of this surgical method was reported from 19.6% to 75% in the literatures, which would cause treatment failure. Thus, an improvement of anterior surgery technique should be studied to reduce these complications. MATERIALS AND METHODS: 130 patients of thoracolumbar burst fractures treated by minimal corpectomy, decompression and U cage, between January 2009 and December 2010 were included in this study...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28216390/the-therapeutic-effect-of-intravertebral-vacuum-cleft-with-osteoporotic-vertebral-compression-fractures-a-systematic-review-and-meta-analysis
#6
REVIEW
Weibo Yu, De Liang, Zhensong Yao, Ting Qiu, Linqiang Ye, Xiaobing Jiang
BACKGROUND: To date, there has been ongoing debate over whether intravertebral vacuum cleft (IVC) has the effect of therapeutic efficacy in percutaneous vertebral augmentation (PVA) for the treatment of osteoporotic vertebral compression fractures (OVCFs). OBJECTIVE: The aim of this meta-analysis was to calculate a pooled estimate of the IVCs on the effect of therapeutic efficacy of PVA for the treatment of OVCFs. METHODS: A systematic electronic literature search was performed using the following databases: PubMed, Embase and Cochrane Library; the databases were searched from the earliest available records up to June 2016...
February 16, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28216272/comparison-of-cyclic-fatigue-resistance-of-waveone-and-waveone-gold-small-primary-and-large-instruments
#7
Mehmet Adıgüzel, Ismail Davut Capar
INTRODUCTION: To compare the cyclic fatigue of resistance of WaveOne (WO; Dentsply Maillefer, Ballaigues, Switzerland) and WaveOne Gold (WOG, Dentsply Maillefer) small, primary, and large instruments in simulated root canals. Each instrument was rotated until fracture occurred. METHODS: One hundred twenty nickel-titanium endodontic instruments were tested in two different curved artificial canals with different angles and radii of curvatures. WO and WOG small, primary, and large instruments were evaluated (n = 10 for each curvature)...
February 16, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28208957/open-reduction-and-internal-fixation-of-displaced-calcaneum-intra-articular-fractures-by-locking-calcaneal-plate
#8
Santosha, Shams Gulrez, Arambam Mahendra Singh, Sanjib Waikhom, Vishal Pakhrin, Sagnik Mukherjee, Rajkumar Debbarma, Prabhu Shrinivas Prashant
INTRODUCTION: Calcaneal fractures constitute the most common fractures in hindfoot. Lots of controversies exist in the management of calcaneal fractures but now-a-days, it is preferable to perform open reduction and internal fixation and early mobilizatation. AIM: To evaluate the functional outcome after open reduction and internal fixation of displaced intra-articular fractures of the calcaneum by locking calcaneal plate. MATERIALS AND METHODS: The study was conducted in the Department of Orthopaedic Surgery from September 2013 to April 2016...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28206698/fkbp10-deletion-in-osteoblasts-leads-to-qualitative-defects-in-bone
#9
Caressa D Lietman, Joohyun Lim, Ingo Grafe, Yuqing Chen, Hao Ding, Xiaohong Bi, Catherine G Ambrose, Nadja Fratzl-Zelman, Paul Roschger, Klaus Klaushofer, Wolfgang Wagermaier, Ingo Schmidt, Peter Fratzl, Jyoti Rai, MaryAnn Weis, David Eyre, Douglas R Keene, Deborah Krakow, Brendan H Lee
Osteogenesis Imperfecta (OI), also known as brittle bone disease, displays a spectrum of clinical severity from mild (OI type I) to severe early lethality (OI type II), with clinical features including low bone mass, fractures and deformities. Mutations in the FK506 Binding Protein 10 (FKBP10), gene encoding the 65KDa protein FKBP65, cause a recessive form of OI and Bruck syndrome, the latter being characterized by joint contractures in addition to low bone mass. We previously showed that Fkbp10 expression is limited to bone, tendon and ligaments in postnatal tissues...
February 16, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28205485/asymptomatic-flexor-tendon-damages-after-volar-locking-plate-fixation-of-distal-radius-fractures
#10
Susumu Tokunaga, Yoshihiro Abe
BACKGROUND: To investigate asymptomatic flexor tendon damages after volar locking plate fixation of distal radius fractures in 32 wrists of 32 patients with distal radius fractures fixed using two plate types. Sixteen patients received the Acu-Loc volar distal radius plate, and the remaining 16 patients received the Aptus distal radius correction plate. METHODS: The flexor pollicis longus (FPL) tendon and flexor digitorum profundus were evaluated according to intraoperative findings at plate removal...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28205475/trigonometry-integrated-lift-technique-tilt-for-restoring-volar-tilt-in-distal-radius-fractures-description-of-technique-and-preliminary-results
#11
Sreedharan Sechachalam, Mala Satku, Jian Hao Kevin Wong, Lester Teong Jin Tan, Fok Chuan Yong
BACKGROUND: Restoration of extra-articular and intra-articular parameters are important considerations during operative fixation of distal radius fractures. Restoration of volar tilt by using visual estimation and the 'lift' technique has previously been described. The aim of our study was to describe a mathematical technique for accurately restoring the volar tilt of the distal radius to acceptable anatomic values. METHODS: A retrospective review of cases performed using the trigonometry-integrated ' lift' technique (TILT) was performed...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28196041/change-in-talar-translation-in-the-coronal-plane-after-mobile-bearing-total-ankle-replacement-and-its-association-with-lower-limb-and-hindfoot-alignment
#12
Young Yi, Jae-Ho Cho, Ji-Beom Kim, Jae-Young Kim, Su-Yeon Park, Woo Chun Lee
BACKGROUND: Mobile-bearing total ankle replacement (TAR) enables motion at the tibial implant-polyethylene insert interface. This motion could lead to coronal translation of the talus relative to the tibia and may affect radiographic outcome. We aimed to assess the translation of the talus before and after mobile-bearing TAR to determine whether translation of the talus after TAR is associated with coronal plane alignment of the lower limb and hindfoot as well as to investigate the complications associated with talar translation...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28194377/comparative-study-between-lateral-decubitus-and-traction-table-for-treatment-of-pertrochanteric-fractures-with-cephalomedullary-nails
#13
Eric Fernando de Souza, José Octávio Soares Hungria, Lucas Romano Sampaio Rezende, Davi Gabriel Bellan, Jonas Aparecido Borracini
OBJECTIVE: To perform a retrospective radiographic assessment of the reduction and implant position in the femoral head in patients with pertrochanteric fractures treated with cephalomedullary nailing in the lateral position versus traction table. METHODS: Radiographs of patients with pertrochanteric fracture of the femur treated with cephalomedullary nailing in the lateral position and traction table were retrospectively evaluated. For the evaluation we used the anteroposterior radiographic view of the pelvis and the lateral view of the affected side...
January 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28193142/subtalar-arthroscopy-and-fluoroscopy-in-percutaneous-fixation-of-intra-articular-calcaneal-fractures
#14
Gin Way Law, Nicholas Eng Meng Yeo, William Yeo, Kevin Koo, Keen Wai Chong
INTRODUCTION: Percutaneous fixation of intra-articular calcaneal fractures is traditionally assisted only by intraoperative fluoroscopy. Previous studies have demonstrated that the additional use of subtalar arthroscopy in anatomical reduction of the posterior calcaneal facet of the subtalar joint for less complex calcaneal fractures yielded positive results up to 2-year follow-up. This study aims to investigate long-term outcomes of these patients using similar evaluation parameters...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28192827/the-use-of-mesh-plates-for-difficult-fractures-of-the-patella
#15
David Volgas, Tina K Dreger
Patella fractures present some of the more complicated fracture patterns in orthopaedic trauma care. This is partially due to the small size of the fragments but also the articular nature of each fragment. Fixation methods such as cerclage wiring, excision of smaller fragments, and screw fixation of larger fragments all have their own challenges. Our study examined our Level I trauma center's experience with variable angle locked 2.7 mm titanium plates for treatment of comminuted patella fractures or treatment of patellar nonunion...
February 13, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28191366/radiological-and-functional-outcome-of-displaced-colles-fracture-managed-with-closed-reduction-and-percutaneous-pinning-a-prospective-study
#16
Sagar Panthi, Kishor Khatri, Krishna Kharel, Subin Byanjankar, Jay R Sharma, Rahul Shrestha, Raju Vaishya, Amit Kumar Agarwal, Vipul Vijay
BACKGROUND: Displaced Colles' fractures are treated by manipulation and below elbow cast application. Malunion is a common complication, resulting in pain, mid-carpal instability, and post-traumatic arthritis. Fracture stabilization by percutaneous pinning is a simple, minimally invasive technique that helps prevent displacement of the fracture, thereby minimizing complications. This study aims to assess the amount of collapse after closed manipulation and percutaneous pinning with Kirschner wires (K-wires) and its correlation with the functional outcome of the wrist after union...
January 6, 2017: Curēus
https://www.readbyqxmd.com/read/28182135/transverse-and-oblique-long-bone-fracture-evaluation-by-low-order-ultrasonic-guided-waves-a-simulation-study
#17
Ying Li, Dan Liu, Kailiang Xu, Dean Ta, Lawrence H Le, Weiqi Wang
Ultrasonic guided waves have recently been used in fracture evaluation and fracture healing monitoring. An axial transmission technique has been used to quantify the impact of the gap breakage width and fracture angle on the amplitudes of low order guided wave modes S0 and A0 under a 100 kHz narrowband excitation. In our two dimensional finite-difference time-domain (2D-FDTD) simulation, the long bones are modeled as three layers with a soft tissue overlay and marrow underlay. The simulations of the transversely and obliquely fractured long bones show that the amplitudes of both S0 and A0 decrease as the gap breakage widens...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28181465/the-effect-of-ulnar-variance-on-scapholunate-and-capitolunate-angles
#18
Ozgur Tosun, Atilla Hikmet Çilengir, Berna Dirim Mete, Muhsin Engin Uluc, Orhan Oyar, Aliye Tosun
Background Ulnar variance (UV), which is measured using anteroposterior (AP) X-rays, is associated with the development of multiple wrist pathologies. The scapholunate angle (SLA) and capitolunate angle (CLA) are measured using lateral X-rays, and these can be used in the diagnosis of intercalated segmental instability. Purpose To determine the effect of UV on SLA and CLA. Material and Methods A total of 140 patients (73 women, 67 men; mean age, 37.8 ± 14.6 years; 95% confidence interval [CI], 35.4-40...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28181454/evaluation-of-radiographic-fracture-position-1-year-after-variable-angle-locking-volar-distal-radius-plating-a-prospective-multicentre-case-series
#19
T Teunis, J Jupiter, K D Schaser, G Fronhöfer, R Babst, M Langer, A Platz, A Schierz, A Joeris, D Rikli
: Treatment with a variable angle locking plate can, in theory, maintain near anatomic reduction of intra-articular distal radius fractures, but it is unknown to what extent reduction is maintained as measured by computed tomography. We assessed changes in radiographic fracture position 1 year post-operatively. We included 73 patients of whom 66 patients (90%) had radiographs available for review at 1 year post-operatively. We found a small (less than 2 mm or 2°) but statistically significant change in several measures...
February 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28178228/imaging-evaluation-of-the-safe-region-for-distal-locking-screw-of-proximal-femoral-nail-anti-rotation-in-patients-with-proximal-femoral-fracture
#20
Jinpeng Gong, Pengcheng Liu, Ming Cai
BACKGROUND Proximal femoral nail anti-rotation (PFNA) is a standard femoral intertrochanteric fracture operation. Iatrogenic vascular injury, although uncommon, is a reported complication of PFNA surgery as well as a complication of hip fracture surgery. This study aimed to compare the safety and best use of the distal locking screw in 170 mm PFNA and 240 mm PFNA devices, and to determine the safe region for placement of the distal locking screw in PFNA surgery. MATERIAL AND METHODS A retrospective analysis of 100 patients with 170 mm PFNA and 80 patients with 240 mm PFNA were retrospectively analyzed...
February 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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