The effect of a new topographic classification on determining the prognosis of nasal fracture and treatment modality.

Background: Classifications of nasal fracture are based on clinical findings or radiological findings. The classification systems of nasal fracture usually determine the type of nasal fracture. It is important that a classification gives information about treatment modality and prognosis rather than determining the type of fracture.

Transport dynamics of SARS-CoV-2 under outdoor conditions.

This study aimed at estimating the transport dynamics of a single severe acute respiratory syndrome corona-virus 2 (SARS-CoV-2)-laden droplet of 1 to 500 μm in diameter at a wind speed from 1 to 4 m/s. Motion dynamics of SARS-CoV-2-laden respiratory droplets under calm or turbulent air conditions were quantified using a combined model. Dalton's law was implemented to estimate their evaporation.

A model for indoor motion dynamics of SARS-CoV-2 as a function of respiratory droplet size and evaporation.

A simplified model has been devised to estimate the falling dynamics of severe acute respiratory syndrome corona-virus 2 (SARS-CoV-2)-laden droplets in an indoor environment. Our estimations were compared to existing literature data. The spread of SARS-CoV-2 is closely coupled to its falling dynamics as a function of respiratory droplet diameter (1 to 2000 μm) of an infected person and droplet evaporation.

Falling Dynamics of SARS-CoV-2 as a Function of Respiratory Droplet Size and Human Height.

Purpose: The purpose of this study is to quantify the motion dynamics of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

Methods: Three physical models of Newton's and Stokes's laws with(out) air resistance in the calm air are used to determine the falling time and velocity regimes of SARS-CoV-2 with(out) a respiratory water droplet of 1 to 2000 micrometers (µm) in diameter of an infected person of 0.5 to 2.

Outer Side of the Nasal Bone Osteoma.

Osteomas are located mostly in the mandible followed by paranasal sinuses such as frontal sinuses, ethmoid air cells, maxillary sinuses and rarely based on nazal cavitiy or turbinate. The osteoma located on outside of nazal bone is extremely rare. The authors report an unusual patient of nasal bone osteoma associated with aesthetic problem on nasal dorsum.

A new lateral thoracic artery perforator flap design with multiple vascular territories in rats.

Background: To describe a new design for an extended lateral thoracic artery (LTA) perforator flap and investigate its anatomical, dynamic, and potential territories.

Materials And Methods: To assess vascular territories, rats were randomized according to LTA perforator flap type into the surgical groups A, hemidorsal island flap; B, entire dorsal island flap; and C, reduced-size dorsal island flap.

Results: On postsurgical day 7, the surviving flap areas were 95%, 92%, and 89% in groups A, B, and C, respectively.

Circumflex scapular artery myocutaneous and/or vascularized scapular chimeric flap.

Background: Chimeric osteomyocutaneous flaps harvested from the subscapular artery system have been used in clinical practice. We describe the use of a novel circumflex scapular artery myocutaneous and/or vascularized scapular chimeric flap in a rat model and demonstrate optimal skin flap dimensions.

Materials And Methods: An 8 × 4-cm-rectangular skin flap based on the circumflex scapular artery flap was harvested, and the mean percentage of the surviving flap area and the necrotic area were calculated to be 71% ± 17.

Treating the Golden Implant Visibility on a Paralytic Eye by Using the Capsule Shield Technique.

Static upper eyelid weight loading is a well known treatment option for patients who suffer from paralytic lagophtalmus. Golden implants may cause some complications such as extrusion, postoperative ptosis, visibility of the implant from the skin, infection, or dislocation. Our patients applied to our clinic with discomfort of the implant's easily noticeable visibility in their daily life.