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https://www.readbyqxmd.com/read/29146506/silicone-metacarpophalangeal-arthroplasty-for-osteoarthritis-long-term-results
#1
Nathan T Morrell, Arnold-Peter C Weiss
PURPOSE: To demonstrate that silicone metacarpophalangeal (MCP) arthroplasty provides excellent long-term outcomes with a low complication rate in osteoarthritis patients. METHODS: A consecutive cohort of 35 patients with osteoarthritis of 1 or more MCP joints undergoing anatomically neutral silicone MCP arthroplasty was followed over a 15-year period. Functional outcomes including strength and range of motion (ROM), as well as complications, were recorded. All patients were available for long-term assessment including radiographs and outcomes questionnaire...
November 14, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29146012/a-biomechanical-cadaveric-study-comparing-superior-capsule-reconstruction-using-fascia-lata-allograft-with-human-dermal-allograft-for-irreparable-rotator-cuff-tear
#2
Teruhisa Mihata, Christopher N H Bui, Masaki Akeda, Matthew A Cavagnaro, Michael Kuenzler, Alexander B Peterson, Michelle H McGarry, Yasuo Itami, Orr Limpisvasti, Masashi Neo, Thay Q Lee
BACKGROUND: Biomechanical and clinical success of the superior capsule reconstruction (SCR) using fascia lata (FL) grafts has been reported. In the United States, human dermal (HD) allograft has been used successfully for SCRs; however, the biomechanical characteristics have not been reported. METHODS: Eight cadaveric shoulders were tested in 5 conditions: (1) intact; (2) irreparable supraspinatus tear; (3) SCR using FL allograft with anterior and posterior suturing; (4) SCR using HD allograft with anterior and posterior suturing; and (5) SCR using HD allograft with posterior suturing...
December 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#3
Duo Wai-Chi Wong, Yan Wang, Aaron Kam-Lun Leung, Ming Yang, Ming Zhang
BACKGROUND: Posterior tibial tendinopathy is a challenging foot condition resulting in pes planus, which is difficult to diagnose in the early stage. Prior to the deformity, abnormal internal load transfer and soft tissue attenuation are anticipated. The objective of this study was to investigate the internal load transfer and strain of the ligaments with posterior tibial tendinopathy, and the implications to pes planus and other deformities. METHODS: A three-dimensional finite element model of the foot and ankle was reconstructed from magnetic resonance images of a 28-year-old normal female...
November 3, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29144022/collagen-a-review-on-its-sources-and-potential-cosmetic-applications
#4
REVIEW
María Isabela Avila Rodríguez, Laura G Rodríguez Barroso, Mirna Lorena Sánchez
Collagen is a fibrillar protein that conforms the conjunctive and connective tissues in the human body, essentially skin, joints, and bones. This molecule is one of the most abundant in many of the living organisms due to its connective role in biological structures. Due to its abundance, strength and its directly proportional relation with skin aging, collagen has gained great interest in the cosmetic industry. It has been established that the collagen fibers are damaged with the pass of time, losing thickness and strength which has been strongly related with skin aging phenomena [Colágeno para todo...
November 16, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/29143065/-complex-joint-reconstruction-and-joint-transplantation-with-the-flocsat-concept-planning-and-surgical-implementation
#5
REVIEW
C Krettek, J-D Clausen, C Neunaber
Cartilage defects in adult patients are so far incurable. Fresh osteochondral allograft (OCA) transplantation is based on the insertion of mature, living, mechanically sound hyaline cartilage into an osteochondral defect where it undergoes osseointegration. Intact hyaline cartilage of OCA does not cause immune reactions in the recipient. Many reports show that small OCA have good osseointegration and show good long-term results. These observations have been incorporated into the development of the fresh large (> 10 cm(2)) osteochondral shell allograft transplantation (FLOCSAT) concept, which is based on the following principles: 1) the thickness of the osseous layer should be kept as thin as possible (target < 6-8 mm) so that the transplant remains stable and fixable...
November 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29132559/oncoplastic-breast-reconstruction-should-all-patients-be-considered
#6
REVIEW
Mehran Habibi, Kristen P Broderick, Mohamad E Sebai, Lisa K Jacobs
Oncoplastic surgery of the tissue defect from partial mastectomy should be considered for all patients. It can result in in significant asymmetries from scar contraction, skin tethering, and alterations in the nipple areolar complex location. Indications, risks, and benefits are discussed. Optimal procedures are described, considering resected specimen volume, primary tumor location, tumor to breast size ratio, and the impact on the nipple areolar complex. Indications for plastic surgery consultation and joint surgery are discussed...
January 2018: Surgical Oncology Clinics of North America
https://www.readbyqxmd.com/read/29132347/knee-arthrodesis-versus-above-the-knee-amputation-after-septic-failure-of-revision-total-knee-arthroplasty-comparison-of-functional-outcome-and-complication-rates
#7
Sven Hungerer, Martin Kiechle, Christian von Rüden, Matthias Militz, Knut Beitzel, Mario Morgenstern
BACKGROUND: After septic failure of total knee arthroplasty (TKA) and multiple revision operations resulting in impaired function, bone and/or soft-tissue damage a reconstruction with a revision arthroplasty might be impossible. Salvage procedures to regain mobility and quality of life are an above-the-knee amputation or knee arthrodesis. The decision process for the patient and surgeon is difficult and data comparing arthrodesis versus amputation in terms of function and quality of life are scarce...
November 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29130656/-design-of-minimal-invasive-screw-on-posterior-pelvis-ring-and-pelvic-finite-element-analysis
#8
Fan Tang, Li Min, Yan-Ling Wang, Bo Qu, Yong Zhou, Yi Luo, Wen-Li Zhang, Rui Shi, Hong Duan, Chong-Qi Tu
OBJECTIVE: To design minimal invasive screw on posterior pelvic ring and perform threedimensional finite element analysis based on a pelvis finite element model. METHODS: We measured the pelvic anatomical data of 20 healthy volunteers and identified potential designs for minimal invasive screw on posterior pelvic ring. A finite element model of pelvis was then established. Threedimensional finite element analyses were performed under static and dynamic mechanical loading,respectively...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29130655/-efficacy-of-sacroiliac-joint-anterior-approach-with-double-reconstruction-plate-and-computer-assisted-navigation-percutaneous-sacroiliac-screw-for-treating-tile-c1-pelvic-fractures
#9
Zhen Tan, Yue Fang, Hui Zhang, Lei Liu, Zhou Xiang, Gang Zhong, Fu-Guo Huang, Guang-Lin Wang
OBJECTIVE: To compare the efficacy of sacroiliac joint anterior approach with double reconstruction plate and computer assisted navigation percutaneous sacroiliac screw for treating Tile C1 pelvic fractures. METHODS: Fifty patients with pelvic Tile C1 fractures were randomly divided into two groups ( n=25 for each) in the orthopedic department of West China Hospital of Sichuan University from December 2012 to November 2014. Patients in group A were treated by sacroiliac joint dislocation with anterior plate fixation...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29130654/-classification-and-treatment-of-sacroiliac-joint-dislocation
#10
Zhen Tan, Zhong Huang, Liang Li, Wei-Kun Meng, Lei Liu, Hui Zhang, Guang-Lin Wang, Fu-Guo Huang
OBJECTIVE: To develop a renewed classification and treatment regimen for sacroiliac joint dislocation. METHODS: According to the direction of dislocation of sacroiliac joint,combined iliac,sacral fractures,and fracture morphology,sacroiliac joint dislocation was classified into 4 types. Type Ⅰ (sacroiliac anterior dislocation): main fracture fragments of posterior iliac wing dislocated in front of sacroiliac joint. Type Ⅱ (sacroiliac posterior dislocation): main fracture fragments of posterior iliac wing dislocated in posterior of sacroiliac joint...
September 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29128678/efficient-operator-splitting-algorithm-for-joint-sparsity-regularized-spirit-based-parallel-mr-imaging-reconstruction
#11
Jizhong Duan, Yu Liu, Peiguang Jing
Self-consistent parallel imaging (SPIRiT) is an auto-calibrating model for the reconstruction of parallel magnetic resonance imaging, which can be formulated as a regularized SPIRiT problem. The Projection Over Convex Sets (POCS) method was used to solve the formulated regularized SPIRiT problem. However, the quality of the reconstructed image still needs to be improved. Though methods such as NonLinear Conjugate Gradients (NLCG) can achieve higher spatial resolution, these methods always demand very complex computation and converge slowly...
November 8, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/29126408/concomitant-glenohumeral-pathologies-in-high-grade-acromioclavicular-separation-type-iii-v
#12
Jochen Markel, Tim Schwarting, Dominik Malcherczyk, Christian-Dominik Peterlein, Steffen Ruchholtz, Bilal Farouk El-Zayat
BACKGROUND: Acromioclavicular joint (ACJ) dislocations are common injuries of the shoulder associated with physical activity. The diagnosis of concomitant injuries proves complicated due to the prominent clinical symptoms of acute ACJ dislocation. Because of increasing use of minimally invasive surgery techniques concomitant pathologies are diagnosed more often than with previous procedures. METHODS: The aim of this study was to identify the incidence of concomitant intraarticular injuries in patients with high-grade acromioclavicular separation (Rockwood type III - V) as well as to reveal potential risk constellations...
November 10, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29122434/a-method-of-accurate-bone-tunnel-placement-for-anterior-cruciate-ligament-reconstruction-based-on-3-dimensional-printing-technology-a-cadaveric-study
#13
Jianlong Ni, Dichen Li, Mao Mao, Xiaoqian Dang, Kunzheng Wang, Jiankang He, Zhibin Shi
PURPOSE: To explore a method of bone tunnel placement for anterior cruciate ligament (ACL) reconstruction based on 3-dimensional (3D) printing technology and to assess its accuracy. METHODS: Twenty human cadaveric knees were scanned by thin-layer computed tomography (CT). To obtain data on bones used to establish a knee joint model by computer software, customized bone anchors were installed before CT. The reference point was determined at the femoral and tibial footprint areas of the ACL...
November 6, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29121409/image-quality-and-dose-for-a-multi-source-cone-beam-ct-extremity-scanner
#14
Grace Jianan Gang, Wojciech Zbijewski, Mahadevappa Mahesh, Gaurav Thawait, Nathan Packard, John Yorkston, Shadpour Demehri, Jeffrey Harrold Siewerdsen
PURPOSE: This work investigates the dose characteristics and image quality of a multi-source cone-beam CT scanner dedicated for extremity imaging. METHODS: The scanner has an x-ray source with three separate anode-cathode units evenly distributed along the longitudinal direction. A nominal scan protocol fires the three sources sequentially, and a total of 600 projections (200 for each source) are acquired over a source-detector orbit of 210(o) . Dose was measured using a Farmer chamber in three CTDI phantoms stacked end-to-end...
November 9, 2017: Medical Physics
https://www.readbyqxmd.com/read/29118579/surface-modification-of-vascular-endothelial-growth-factor-loaded-silk-fibroin-to-improve-biological-performance-of-ultra-high-molecular-weight-polyethylene-via-promoting-angiogenesis
#15
Chengchong Ai, Dandan Sheng, Jun Chen, Jiangyu Cai, Siheng Wang, Jia Jiang, Shiyi Chen
Ultra-high-molecular-weight polyethylene (UHMWPE) has been applied in orthopedics, as the materials of joint prosthesis, artificial ligaments, and sutures due to its advantages such as high tensile strength, good wear resistance, and chemical stability. However, postoperative osteolysis induced by UHMWPE wear particles and poor bone-implant healing interface due to scarcity of osseointegration is a significant problem and should be solved imperatively. In order to enhance its affinity to bone tissue, vascular endothelial growth factor (VEGF) was loaded on the surface of materials, the loading was performed by silk fibroin (SF) coating to achieve a controlled-release delivery...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29117740/regional-variations-of-medicare-physician-payments-for-hand-surgery-procedures-in-the-united-states
#16
David R Veltre, Mark Yakavonis, Emily J Curry, Antonio Cusano, Robert L Parisien, Josef K Eichinger, Scott F M Duncan, Andrew B Stein, Xinning Li
BACKGROUND: Medicare reimbursement is known to exhibit geographic variation for inpatient orthopedic procedures. This study determined whether US geographic variations also exist for commonly performed hand surgeries. METHODS: Using the Medicare Provider Utilization and Payment Data (2012-2013) from Centers for Medicare & Medicaid Services, we analyzed regional physician charges/payments for common outpatient hand surgeries. RESULTS: The most commonly performed procedures in the United States were open carpal tunnel release (n = 21 944), trigger finger release (n = 15 345), endoscopic carpal tunnel release (n = 7106), and basal joint arthroplasty/ligament reconstruction and tendon interposition (n = 2408)...
November 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29116495/mandibular-kinematics-and-maximum-voluntary-bite-force-following-segmental-resection-of-the-mandible-without-or-with-reconstruction
#17
Sabine S Linsen, Annina Oikonomou, Markus Martini, Marcus Teschke
OBJECTIVES: The purpose was to analyze mandibular kinematics and maximum voluntary bite force in patients following segmental resection of the mandible without and with reconstruction (autologous bone, alloplastic total temporomandibular joint replacement (TMJ TJR)). MATERIALS AND METHODS: Subjects operated from April 2002 to August 2014 were enrolled in the study. Condylar (CRoM) and incisal (InRoM) range of motion and deflection during opening, condylar retrusion, incisal lateral excursion, mandibular rotation angle during opening, and maximum voluntary bite force were determined on the non-affected site and compared between groups...
November 7, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29115657/wrapping-degloved-fingers-with-a-distal-based-radial-forearm-perforator-flap-a-repair-method-for-multiple-digital-degloving-injury
#18
Yusuf Kenan Çoban, Özcan Öcük, Kaan Bekircan
Degloving hand injuries present challenging situations to hand surgeons as they present with difficulties in reconstructive microsurgery, particularly in multiple digital injuries. Time is a limiting factor when multiple degloving finger amputations are present. Thus, we proposed a repair method for multiple degloving finger injuries that involves coverage with a distal-based reverse forearm flap of all injured fingers in a two-stage procedure. Early vigorous physical therapy after pedicle division of the flap at postoperative third week eliminates joint stiffness problems at wrist and metacarpophalangeal joints...
November 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/29114629/knee-osteoarthritis-after-reconstruction-of-isolated-anterior-cruciate-ligament-injuries-a-systematic-literature-review
#19
REVIEW
Compagnoni Riccardo, Catani Fabio, Randelli Pietro
Purpose  The aim of this review was to analyze the current literature on osteoarthritic evolution of knees without any combined meniscal or ligament lesions undergoing anterior cruciate ligament (ACL) reconstruction. Methods  A PubMed/MEDLINE research was performed using the following keywords: "Anterior Cruciate Ligament Reconstruction" [Mesh] AND "Osteoarthritis, Knee" [Mesh]. Only English language literature and articles published after 2005 were included. Studies including concomitant meniscal tears, posterior cruciate or collateral ligament injuries, previous surgery in the affected knees, infections, osteochondral defects, loose bodies, synovial plica syndrome, and posteromedial or posterolateral corner injuries were not considered in this review...
March 2017: Joints
https://www.readbyqxmd.com/read/29113176/stereolithographic-model-assisted-reconstruction-of-the-mandibular-condyle-with-a-vascularized-fibular-flap-following-hemimandibulectomy-evaluation-of-morphological-and-functional-outcomes
#20
Hitoshi Yoshimura, Shinpei Matsuda, Seigo Ohba, Yoshiki Minegishi, Kunihiro Nakai, Shigeharu Fujieda, Kazuo Sano
The vascularized fibular flap is one of the standard treatment choices for the reconstruction of the mandible; however, the consequences of condylar restoration have not previously been reported. The use of three-dimensional models allows for a more predictable reconstruction. The purpose of the present study was to assess the outcome of stereolithographic model-assisted reconstruction of the mandibular condyle with a vascularized fibular flap. A total of 5 patients underwent mandibular resection including the condyle and immediate reconstruction with a vascularized fibular flap...
November 2017: Oncology Letters
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