OBJECTIVE Micropick fenestration of the stapes footplate, a difficult step in stapedotomy, was selected for trials evaluating the potential for robotic assistance (RA) to improve clinical measures of surgical performance. STUDY DESIGN In a surgical model of stapedotomy, we measured accuracy of fenestration to a desired point location and force applied to the stapes footplate. Performance vari...

IMPORTANCE Physicians should ideally be able to provide patients with chronic otitis media and/or cholesteatoma specific information about postoperative hearing outcome, based on their level of preoperative ossicular chain damage (OCD). OBJECTIVE To identify the influence of preoperative OCD on hearing outcomes in patients after chronic otitis media and/or cholesteatoma surgery. DATA SOURCE...

By theoretically analyzing dynamic behavior of the crankshaft, the rolling piston and the blade inrolling-piston rotary compressors, constraint forces and sliding speed at each pair of movable machine elements were obtained, and unbalanced inertia forces and compressor vibrations were evaluated. It was concluded that theoretical results have a goodagreement with experimental ones. Moreover, it ...

X-linked mixed hearing loss with stapes fixation is a congenital, recessive anomaly. The condition is characterized by progressive mixed hearing loss, reduced vestibular responses, and congenital fixation of the stapes with perilymph gusher encountered during surgical intervention. This paper describes the audiologic history of a family with two affected male children and one carrier female chi...

This scientific commentary refers to “Key questions for the evaluation of anti-amyloid immunotherapies Alzheimer”s disease', by Liu et al. (https://doi.org/10.1093/braincomms/fcad175)

In this work, a generalized expression of the photoacoustic ~PA! effect in a multilayer material is derived. This expression takes thermal and optical properties and geometry of a multilayer structure, as well as the thermal contact resistances between layers into consideration. In addition, a composite piston model consisting of a thermal piston and a mechanical piston of the PA effect is deve...

OBJECTIVE To assess hearing results following primary stapes surgery in patients with otosclerosis, comparing local and general anesthesia. DATA SOURCES PubMed, Embase, the Cochrane Library, CINAHL, and Scopus. REVIEW METHODS A systematic search was conducted, followed by assessment of directness of evidence and risk of bias. Studies reporting original data on the effect of local anesthesia...

In preparing of thermoluminescent dosimeters (TLD) it is common to use as agglutinator the polytetrafluoroethylene (PTFE), called Teflon. In this paper the physical, morphological and dosimetric characteristics of Teflon were evaluated aiming its application in thermoluminescent dosimetry. The differential thermal analysis (DTA) and thermogravimetry (TG) results showed that the Teflon glass tra...

The extraordinary sensitivity of the mammalian ear is commonly attributed to the cochlear amplifier, a cellular process thought to locally boost responses of the cochlear partition to soft sounds. However, cochlear power gain has not been measured directly. Here we use a scanning laser interferometer to determine the volume displacement and volume velocity of the cochlear partition by measuring...

Statement of Problem. Stapedotomy is the treatment of choice for otosclerosis. Numerous techniques and prosthesis are available to perform this procedure. Success rates of surgery vary from 17% to 80%, and revision surgery carries an increased risk of complications as well as poorer hearing outcomes. Method of Study. Case report. Results. We report the first case of uncrimping of a SMart stapes...