Radiation Response of Negative Gate Biased SiC MOSFETs.

Silicon carbide (SiC) metal-oxide-semiconductor field effect transistors (MOSFETs) are expected as power electronic devices for high radiative conditions, including nuclear plants and space. Radiation response of commercial-grade prototype SiC MOSFETs with applying the gate bias is of interest, in terms of installation of the device in robots or sensors working under such radioactive circumstances. Due to gamma-rays irradiation, the threshold voltages () of samples with un- and negative-biased up to -4.

Does the addition of computed tomography to computed radiography provide more value to final outcomes and treatment decisions in displaced intra-articular calcaneal fractures?

Background: Little is known about the additional prognostic value of computed tomography (CT) in addition to computed radiography in displaced intra-articular calcaneal fractures. Thepresent study was undertaken to examine and compare the final radiographic outcomes and the prevalence of treatment methods of displaced intra-articular calcaneal fractures in patients with preoperative computed radiography alone vs. a combination ofcomputed radiography and computed tomogra- phy.

Arthroscopic bone marrow stimulation techniques for osteochondral lesions of the talus: prognostic factors for small lesions.

Background: The defect size of an osteochondral lesion of the talus is one of the most important prognostic factors for deciding clinical outcomes. However, the prognostic factors for small osteochondral lesions of the talus are unknown.

Purpose: To investigate the significant prognostic factors for small osteochondral lesions of the talus using arthroscopic bone marrow stimulation techniques.

Critical three-dimensional factors affecting outcome in osteochondral lesion of the talus.

Purpose: This study aimed to investigate the relationship between clinical outcomes, patient demographics and the 3D-geometric profiles of the osteochondral lesion of the talus (OLT) following arthroscopic debridement and bone marrow stimulation.

Methods: Between 2005 and 2011, arthroscopic debridement and bone marrow stimulation were performed on 50 ankles with OLT mean age of 36.0 (19.

The effect of screw position and number on the time to union of arthroscopic ankle arthrodesis.

Purpose: This study aimed to investigate the factors that influence the time to union after arthroscopic ankle arthrodesis.

Methods: From June 2005 to October 2010, 46 patients (50 ankles) underwent arthroscopic ankle arthrodesis with 6.0-mm cannulated cancellous screws.

Arthroscopic treatment for an osteochondral defect of the talus after necrosis associated with acute lymphoblastic leukaemia: a case report.

Osteonecrosis is a serious complication of acute lymphoblastic leukemia (ALL) therapy. The spontaneous regression or healing of osteonecrosis is rare. An unusual case of an osteochondral defect of the talus secondary to osteonecrosis is herein presented.

Prevalence of femoroacetabular impingement in Asian patients with osteoarthritis of the hip.

Although femoroacetabular impingement (FAI) has recently been considered to be one of the causes of osteoarthritis (OA) of the hip, the exact pathogeneses and incidence of FAI and primary OA are unknown. The purposes of this study were to investigate the causes of hip OA in Japan and to clarify the prevalence of FAI in patients with hip OA. We retrospectively investigated 817 consecutive patients (946 hips) who underwent primary surgery with the diagnosis of OA of the hip.

Arthroscopic findings in Maisonneuve fractures.

Background: A Maisonneuve fracture consists of a proximal fibular fracture with associated syndesmotic ligament disruption and injury to the medial ankle structures. The treatment outcome is good in most cases, although poor results have also been reported. The purpose of this study was to investigate intra-articular lesions in Maisonneuve fractures.