Aim. the aim of the research is to evaluate the possibilities of diagnosing laryngeal injuries with the use of laryngoscopy and ultrasonographic examination. Material and methods. there were diagnosed and treated 15 children aged 5-14 (6 girls and 9 boys) with external injuries of the larynx. in all cases laryngoscopy under general anesthesia and radiological examinations including ultrasound o...

PURPOSE To retrospectively assess the prognostic meaning of tumor characteristics depicted on pretreatment magnetic resonance (MR) images for local outcome in supraglottic squamous cell carcinoma treated with definitive radiation therapy. MATERIALS AND METHODS Pretreatment MR images acquired in 84 patients with supraglottic carcinoma treated with curative radiation therapy were reviewed for t...

Osseocalcineus metaplasia (OCM) of the tracheal cartilages is well known, but no exact data are available relating it to age and sex. To resolve this problem we analysed tracheal teleradiograms of 99 female (age: 0.4-92; x = 59.98 +/- +/- 22.75 years) and 110 male patients (age: 0-83; x = 53.53 +/- 19.95 years). As the first step we estimated the percentage of trachea that had complete lesions,...

Many bony features of the face develop from endochondral ossification preexisting collagen-rich cartilage structures. The proper development these structures is essential to morphological formation face. developmental programs governing pre-bone facial cartilages are sensitive chemical compounds that disturb histone acetylation patterns and chromatin structure. We have taken advantage this fact...

Sulfated proteoglycans synthesized by intact embryonic chick vertebral cartilages maintained in organ culture were characterized by labeling the vertebral chondrocytes with [35S]sulfate. More than 95% of the sulfated macromolecules synthesized by the cartilages are retained in their extracellular matrix. Sucrose velocity sedimentation gradient analyses revealed that the intact cartilages synthe...

We utilize a novel, transgenic cell-labeling system to assess the embryonic derivation of cartilages in the post-metamorphic skull of anuran amphibians. Many of these cartilages form de novo at metamorphosis and have no obvious precursors within the larval skeleton. Most adult cartilages are derived from mandibular- or hyoid-stream neural crest, either individually or in combination; branchial-...

The mechanical functions of the menisci may be partially performed through the fluid pressurization in articular cartilages and menisci. This creep behavior has not been investigated in whole knee joint modeling. A three-dimensional finite element knee model was employed in the present study to explore the fluid-flow dependent creep behaviors of normal and meniscectomy knees. The model included...

The purpose of this study is to investigate the spacial expression pattern and functional significance of three key transcription factors related to bone and cartilage formation, namely, Sox9, Runx2, and Osterix in cartilages during the late development of mouse mandible. Immunohistochemical examinations of Sox9, Runx2, and Osterix were conducted in the mandibular cartilages of the 15 neonatal ...