نتایج جستجو برای: scaphoid mal

تعداد نتایج: 8614  

Journal: :the archives of bone and joint surgery 0
ahmadreza afshar department of orthopedics, urmia university of medical sciences, urmia, iran afshin mohammadi department of radiology, urmia university of medical sciences, urmia, iran kian zohrabi department of orthopedics, urmia university of medical sciences, urmia, iran nasrin navaeifar department of orthopedics, urmia university of medical sciences, urmia, iran sam sami department of orthopedics, shafa yahyaian hospital, iran university of medical sciences, tehran, iran hassan taleb department of orthopedics, urmia university of medical sciences, urmia, iran

background: scaphoid mal:union: alters the carpal kinematics and impairs clinical outcome because of pain, weakness, restricted range of motion and predisposing the wrist joint to early osteoarthritis. the aim of this study was to evaluate the influence of the scaphoid morphological angles on clinical outcomes in patients with reconstructed scaphoid by non-vascularized bone graft. methods: seve...

  Background: Scaphoid malunion alters the carpal kinematics and impairs clinical outcome because of pain, weakness, restricted range of motion and predisposing the wrist joint to early osteoarthritis. The aim of this study was to evaluate the influence of the scaphoid morphological angles on clinical outcomes in patients with reconstructed scaphoid by non-vascularized bone graft. Methods: Seve...

2014
Claudio Letta Andreas Schweizer Philipp Fürnstahl

The purpose of this study was to accurately quantify contralateral differences of the scaphoid in three-dimensional space to evaluate the feasibility of using the healthy contralateral bone as a reconstruction template in the preoperative planning of complex mal- or nonunions. Three-dimensional surface models of the left and right scaphoids were reconstructed from computed tomography images and...

2003
Christopher Forthman Jesse B. Jupiter

The scaphoid is the most commonly fractured bone in the carpus. Although greater than 90% of scaphoid fractures unite with cast immobilization, failure to heal remains a clinical reality, particularly when the fracture is displaced or associated with intracarpal instability [1–3]. Dabezies [4] reported a 55% incidence of nonunion and a 50% rate of proximal pole avascular necrosis (AVN) in scaph...

Journal: :Journal of wrist surgery 2016
Frederick W Werner Hugo St-Amand Hisao Moritomo Levi G Sutton Walter H Short

Background Scaphoid fractures are common carpal fractures that are often misdiagnosed as wrist sprains and may go on to nonunion. The location of the fracture site may influence the stability of scaphoid nonunions. Purpose To determine whether the stability of a scaphoid nonunion depends upon the fracture's location, we tested the hypothesis that a simulated fracture distal to the apex of the s...

2011
P. P Dubey Navneet Kumar Chauhan M. S. Siddiqui

The nutrient vascular foramina of scaphoid bone were observed and clinical interpretations were discussed. The 220 dry scaphoid bones of adult age group were studied. The vascular foramina distal to mid of waist were 1 to 2 in 17.72 % specimen and rest of 82.28% bones had more then 2 foramina. There was no scaphoid without vascular foramina distal to mid of waist of scaphoid. But the proximal p...

Journal: :Hong Kong medical journal = Xianggang yi xue za zhi 2014
Jason P Y Cheung Chris Y K Tang Boris K K Fung

The aim of this review was to present currently available evidence on the management of acute scaphoid fractures. Acute scaphoid fractures are usually diagnosed by a combination of history, physical examination, and radiography. However, in many patients scaphoid fractures are still missed. Thus, the general trend is to over-treat patients with a suspicion of scaphoid fracture. Many aspects of ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده فنی و مهندسی 1392

موضوع این تحقیق سنتز نانو ذرات کربوکسیلات آلوموکسان از بوهمیت(bo) و بررسی قابلیت آن برای جذب رنگ (ry) 84reactive yellow می باشد. همچنین اثرات افزودن نانو ذره مالئات آلوموکسان(mal-a) به غشاء چیتوسان (ct) با مطالعه خواص فیزیکی و قدرت جذب رنگ ry توسط غشاء مورد بررسی قرار گرفت. روش solution-casting برای ساخت غشای جاذب ct/mal-a بکار گرفته شد. ساختار مواد سنتز شده با استفاده از ft-ir, sem, xrd و آنال...

2011
Steven J Rhemrev Daan Ootes Frank JP Beeres Sven AG Meylaerts Inger B Schipper

Fractures of the scaphoid bone mainly occur in young adults and constitute 2-7% of all fractures. The specific blood supply in combination with the demanding functional requirements can easily lead to disturbed fracture healing. Displaced scaphoid fractures are seen on radiographs. The diagnostic strategy of suspected scaphoid fractures, however, is surrounded by controversy. Bone scintigraphy,...

Journal: :Techniques in hand & upper extremity surgery 2003
Veith L Moser Hermann Krimmer Timothy J Herbert

Internal fixation of scaphoid fractures avoids the problems associated with prolonged plaster immobilization and, at the same time, allows an early return to activity for these mostly young patients.Internal fixation of the scaphoid is greatly facilitated by the use of specially designed headless bone screws, such as the Herbert bone screw, originally developed specifically for internal fixatio...

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