It is unusual to have communication from the external auditory canal (EAC) directly to the mastoid, totally sparing the tympanum. These patients need a different surgical approach, a modified canal wa...
A 28-year-old lady presented with ear discharge for 1 year. Imaging confirmed the canal-mastoid fistula, but the entire tympanum was normal. We performed a modified-modified radical mastoidectomy....
Canal-mastoid fistula is an infrequent entity and may be idiopathic. Despite being evident on clinical examination, imaging aids in assessing size and location of the defect. Although EAC reconstructi...
Video-based coaching might complement general surgery education, but little is known of its applicability for otologic microsurgical teaching. Our purpose was thus to evaluate the content and resident...
In this mixed-methods pilot design, mastoidectomies were recorded from operative microscopes and reviewed during 30-minute video-based coaching sessions at 2 tertiary care centers. Eight residents and...
Seven audio-recordings were available for coaching sessions, during which a mean of 2.22 ± 0.5 topics per minute were discussed. Of the 12 teaching topics, technique was discussed most frequently (32%...
Video-based coaching is educationally dense and characterized by perceived richer teaching and promotion of a deeper surgical understanding. It requires no additional resources, can be completed in a ...
Endoscopic hydro-mastoidectomy, in which mastoidectomy is performed underwater, can be employed during transcanal endoscopic ear surgery for cholesteatoma removal. It was hypothesised that endoscopic ...
This study compared the mastoidectomy and total operative durations between the endoscopic hydro-mastoidectomy (...
The mastoidectomy time of the endoscopic hydro-mastoidectomy group was significantly shorter than that of the control group (...
Endoscopic hydro-mastoidectomy enables more extensive bone resection within a shorter period....
To investigate safety and efficacy of mastoid obliteration in canal-wall-down tympanoplasty performed for cholesteatoma using bioactive glass (BAG). The authors routinely adopt CWD tympanoplasty in ca...
The authors evaluated 66 patients treated with obliterative mastoidectomy using BAG during the period 2010-2021. 48.5% of the cases had first diagnosis of cholesteatoma, 48.5% had cholesteatoma recidi...
Authors followed 66 patients during a mean of 23 months. No post-operative wound infections occured. The mean re-epithelialization time was 45 days. At the last visit, control of infection was achieve...
The use of bioactive glass is safe and effective as obliteration material in cholesteatoma surgery. Authors pay a particular attention to obliterate only patients without suspect of epithelial residua...
Robotic assistance in otologic surgery can reduce the task load of operating surgeons during the removal of bone around the critical structures in the lateral skull base. However, safe deployment into...
We introduce a surgical drill equipped with a force sensor that is capable of measuring accurate tool-tissue interaction forces to enable force control and feedback to surgeons. The design, calibratio...
The force measurements on the tip of the surgical drill are validated with raw-egg drilling experiments, where a force sensor mounted below the egg serves as ground truth. The average root mean square...
The force-sensing prototype measures forces with sub-millinewton resolution and the results demonstrate that the calibrated force-sensing drill generates accurate force measurements with minimal error...
Mastoidectomy involves drilling the temporal bone while avoiding the facial nerve, semicircular canals, sigmoid sinus, and tegmen. Optical topographic imaging (OTI) is a novel registration technique t...
In this cadaveric study, 8 mastoidectomies were performed in 2 groups-4 free-hand (FH) and 4 OTI-assisted mastoidectomies. Registration accuracy for OTI navigation was quantified with root mean square...
The average RMS and TRE associated with OTI-based registration were 1.44 mm (±0.83 mm) and 2.17 mm (±0.89 mm), respectively. The volume removed, expressed as a percentage of the total mastoid volume, ...
This work is the first examining the application of OTI neuronavigation in lateral skull-base procedures. This pilot study revealed the RMS and TRE for OTI-based navigation in the lateral skull base a...
To relate the creation and expert validation (face and content validity) of an affordable three-dimensional (3-D) printed model of temporal bones with chronic otitis media with cholesteatoma (COMC) as...
We performed computed tomography (CT) of the temporal bones of a patient with COMC followed at the University of São Paulo (USP) Hospital with 3-D Slicer to create a 3-D model of the affected bone usi...
Otologists consistently scored the model positively for fidelity, educational value, reactions, and the overall model quality. Nine otologists agreed that the model was a good educational device for s...
Using 3-D printing technology, we created the first anatomically accurate, low-cost, disease-reproducing 3-D model of temporal bones for mastoidectomy training for cholesteatoma....
To investigate the microbial patterns and clinical outcomes of pediatric patients undergoing mastoidectomy for acute coalescent mastoiditis and to identify factors associated with poor outcomes and/or...
Monocentric retrospective cohort study....
Tertiary referral pediatric hospital in Indiana....
By cross-referencing database data from the Pediatric Health Information System (PHIS) querying for all inpatient stays (patients younger than eighteen) with a diagnostic code of mastoiditis between J...
Inclusion criteria was met by 46 patients. From 2010 to 2019, S. pyogenes and S. pneumoniae were the most common bacteria, each isolated in 11 of 42 bacterial isolates (26.2%). There was no growth in ...
S. pyogenes and S. pneumoniae were the predominant etiologic agents in acute coalescent mastoiditis between 2010 and 2019, and negative wound cultures were associated with worse clinical outcomes....
Our objective is to evaluate the effect of habituation on the altered ear canal acoustics after canal wall down mastoidectomy....
A total of 11 participants with single sided dry cavities and normal contralateral ear canals with normal hearing thresholds were included in the study. Filtered sound fragments were created that simu...
Mean assessment of sound quality revealed the following results; naturalness of sounds of the cavity ear canal is 0.29 (± 1.41; ns) in favour of the filtered sound fragment of the normal ear canal. Me...
Patients with cavity ear canals seem to habituate to their altered ear canal acoustics. Transforming the ear canal acoustics of the cavity ear to normal ear canal acoustics seem to sharpen the incomin...
The anterolateral (juxtacondylar) approach with limited mastoidectomy is a suitable option to expose the postero-inferior part of the jugular foramen (JF). It is particularly indicated for tumors exte...
We describe here the steps to safely perform an anterolateral approach with mastoidectomy along with a brief description of its indications and limits....
This approach represents a valid option to reach the JF. Its knowledge can improve the process of optimal approach selection when dealing with complex pathology involving the JF....
