OBJECTIVE Avulsion injuries of the dorsum of the foot and ankle present difficult reconstructive problems especially in pediatric patients. Usually, there is exposure of bones, joints, tendons, or ligaments, which requires coverage by flaps. The best skin for coverage is the local skin, but the remaining intact skin is usually limited. Usage of such local skin necessitates elevation of long and...

BACKGROUND Over the last several decades, reconstruction of the head and neck oncologic defect has been revolutionized by the use of microvascular free tissue transfer. The majority of these defects can be reconstructed with the ability to visually monitor the flap, to intervene as soon as vascular compromise becomes evident. Occasionally, it is necessary to use a flap that has no visual extern...

The nonlinear dynamic analysis of imperfect hemispherical shell under pressure was executed. finite element model hemisphere in the software NASTRAN built. wall form three-cornered and four-cornered net presented. Shape imperfection as a lower buckling (Buckling) perfect action static modelled. Value amplitude set proportionally to thickness. Two boundary conditions rigid hinged supports on nod...

The use of degradable polymeric implant materials for defect closure after tumor surgical resection in the area upper aerodigestive tract instead skin muscle flaps would represent a novel therapeutical option oncological head and neck surgery. Successful coverage with not only reduce morbidity but also improve swallowing speech function comparison to flaps.

GNSS RO utilizes the various navigation satellite systems as signal sources for atmospheric remote sensing. The frequency stability of the signals emitted by GNSS satellites is tied to the stability of the atomic frequency standards (AFS) they carry onboard and is thus critical to the quality of the atmospheric profiles derived from the occultation measurements. Because of the variety of AFS us...

BACKGROUND Free-flap surgery and skin grafting can be used to reconstruct large facial defects that may result after skin cancer removal by Mohs micrographic surgery (MMS). However, these two methods may produce low postsurgical patient satisfaction with aesthetics, and free-flap surgery may produce an undue burden for the majority of skin cancer patients, who are of advanced age. Hence, the au...

The local fasciocutaneous flap has the advantage of low donor-site morbidity when used for the coverage of lower limb defects. However, flap reliability remains a major problem with its use. The purpose of this study was to determine the feasibility of preserving perforators to the tip of conventional local fasciocutaneous flaps to improve its vascularity. The technical considerations of raisin...

Reconstruction of the bone defects due to various causes is still one of the challenging problems in plastic and reconstructive surgery. Periosteum is accepted to be the essential source for the repair of the bone tissue, which constitutes the basis of the support and the mobility functions of the surrounding tissues. Periosteal grafts and flaps have been used for various purposes by numerous t...

During DNA replication, synthesis of the lagging strand occurs in stretches termed Okazaki fragments. Before adjacent fragments are ligated, any flaps resulting from the displacement of the 5' DNA end of the Okazaki fragment must be cleaved. Previously, Dna2 was implicated to function upstream of flap endonuclease 1 (Fen1 or Rad27) in the processing of long flaps bound by the replication protei...