Modified stapes surgery for otosclerosis: An evaluation of auditory results and postoperative complications.

BACKGROUND: The senior author Shiao, had introduced a modified version of the traditional stapes surgery, called minimally traumatic stapes surgery (MTSS), and explored its effectiveness in reducing postoperative vertigo. However, MTSS exhibited no significant breakthrough in terms of audiometric results. Building upon the original MTSS through slight modifications and the use of the Medtronic Big Easy ® Piston as the prosthesis, this study evaluates a refined version of the original MTSS technique. In particular, this research sought to investigate the impact of this refined approach on hearing outcomes and postoperative complications among patients diagnosed with otosclerosis. METHODS: This research comprehensively examined the medical records of individuals diagnosed with otosclerosis who underwent MTSS. The postoperative outcomes assessed encompassed hearing outcomes and the occurrence of any new complications. RESULTS: Overall, 95 patients diagnosed with otosclerosis (comprising 106 affected ears) underwent MTSS. Significant improvements in both the average air conduction threshold (40 ± 16.82 dB after vs 60 ± 14.56 dB before surgery; p < 0.0001) and average air-bone gap (11.99 ± 7.24 dB after vs 29.65 ± 9.47 dB before surgery; p = 0.003) were observed after the surgery. Conversely, no significant change in the average bone conduction threshold was observed after the procedure (28 ± 13.81 dB after vs 29 ± 12.31 dB before surgery; p = 0.149). Among the 106 affected ears, 102 showed postoperative air-bone gap measurements <20 dB, indicating an impressive 96.2% overall hearing improvement. Notably, only a few postoperative complications were observed, including vertigo, chorda tympani injury, facial weakness, and a slight hearing deterioration. CONCLUSION: The refined MTSS technique promoted significant postoperative hearing improvements with minimal complications. This approach showed potential for addressing the surgical challenges in Asian patients with otosclerosis, emphasizing the importance of further research on this advanced procedural method.

The New Semisynthetic TORP: A Prosthesis for Ossicular Reconstruction Both With the Absence and the Presence of the Stapes Superstructure.

OBJECTIVES: To describe the new semisynthetic total ossicular replacement prosthesis (New-SSTORP) and to evaluate the New-SSTORP ossiculoplasty results both with the presence and absence of the stapes superstructure. STUDY DESIGN: Prospective study. SETTING: Tertiary referral center. METHODS: From April 2023 to May 2023, 18 New-SSTORP ossiculoplasties were performed by the first author. In all patients, the New-SSTORP was interposed between the footplate and the eardrum. The study group was divided into two groups (group A and group B). Group A included 13 patients with the absence of stapes superstructure. Group B included five patients with the presence of stapes superstructure. A successful reconstruction was defined as a postoperative air-bone gap ABG ≤20 dB. For all patients of groups A and B, the last audiometric control considered was performed in January 2024. The mean follow-up was 8½ months. The χ2 test was used to compare results. p < 0.05 was considered significant. MAIN OUTCOME MEASURES: Mean postoperative ABG ≤20 dB. RESULTS: At the end of follow-up, the overall success rate (ABG ≤20 dB) of New-SSTORP ossiculoplasty was obtained in 88.8% (n = 16 of 18) of cases. In group A, the success rate of New-SSTORP ossiculoplasty occurred in 84.6% (n = 11 of 13) of cases, and in group B, the success rate of New-SSTORP ossiculoplasty occurred in 100% (n = 5 of 5) of cases. There was no audiological statistically significant difference between groups A and B (Fisher value is 1; p < 0.05). In all cases, the time for positioning of New-SSTORP was about 5 minutes. CONCLUSION: The New-SSTORP has a minimal technical challenge for building and placement. The New-SSTORP ossiculoplasty results are very good both with the presence and absence of SS.

Stapedotomy Versus Cochlear Implantation for Far Advanced Otosclerosis: Insights From a Patient With Matched Preoperative and Postoperative Function.

OBJECTIVE: To examine patient preference after stapedotomy versus cochlear implantation in a unique case of a patient with symmetrical profound mixed hearing loss and similar postoperative speech perception improvement. PATIENTS: An adult patient with bilateral symmetrical far advanced otosclerosis, with profound mixed hearing loss. INTERVENTION: Stapedotomy in the left ear, cochlear implantation in the right ear. MAIN OUTCOME MEASURE: Performance on behavioral audiometry, and subjective report of hearing and intervention preference. RESULTS: A patient successfully underwent left stapedotomy and subsequent cochlear implantation on the right side, per patient preference. Preoperative audiometric characteristics were similar between ears (pure-tone average [PTA] [R: 114; L: 113 dB]; word recognition score [WRS]: 22%). Postprocedural audiometry demonstrated significant improvement after stapedotomy (PTA: 59 dB, WRS: 75%) and from cochlear implant (PTA: 20 dB, WRS: 60%). The patient subjectively reported a preference for the cochlear implant ear despite having substantial gains from stapedotomy. A nuanced discussion highlighting potentially overlooked benefits of cochlear implants in far advanced otosclerosis is conducted. CONCLUSION: In comparison with stapedotomy and hearing aids, cochlear implantation generally permits greater access to sound among patients with far advanced otosclerosis. Though the cochlear implant literature mainly focuses on speech perception outcomes, an underappreciated benefit of cochlear implantation is the high likelihood of achieving "normal" sound levels across the audiogram.

Surgical decision-making in superior canal dehiscence syndrome with concomitant otosclerosis.

OBJECTIVE: The diagnosis and management of Superior Canal Dehiscence Syndrome (SCDS) with concomitant otosclerosis can be a challenge. Otosclerosis can mask SCDS symptoms and stapes surgery may reveal or exacerbate vestibular symptoms. Our aim is to present four cases of SCDS with concomitant otosclerosis and thereby informing the reader about the possibility of this dual occurrence and its implications for treatment. CASES: Four patients with SCDS and concomitant otosclerosis are presented. Two patients underwent surgical treatment for both SCDS and otosclerosis and two patients opted for conservative management. OUTCOMES: The main differences between surgically and non-surgically treated cases are the presence of autophony and pressure-induced vertigo and a more severe experience of symptoms in surgically treated cases. Surgically treated cases achieved a sizeable reduction in postoperative air-bone gap and resolution of vestibular symptoms. CONCLUSION: The subjective severity of symptoms in combination with shared decision-making is key in determining the appropriate treatment plan for SCDS and concomitant otosclerosis.

Audiometric and Vestibular Function after Classic and Reverse Stapedotomy.

Background and Objectives: Besides classical stapedotomy, reverse stapedotomy has been used for many years in the management of otosclerosis. Our study aims to investigate whether reversing the surgical steps in stapedotomy impacts vestibular function and hearing improvement. Materials and Methods: A cohort of 123 patients underwent either classic or reverse stapedotomy procedures utilizing a fiber-optic argon laser. Audiological assessments, following the guidelines of the Committee on Hearing and Equilibrium, were conducted, including pure tone average, air-bone (AB) gap, overclosure, and AB gap closure. Vestibular evaluation involved pre- and postoperative comparison of rotatory test parameters, including frequency, amplitude, and slow phase velocity of nystagmus. Results: The study demonstrated an overall median overclosure of 3.3 (3.3, 5.0) dB and a mean AB gap closure of 20.3 ± 8.8 dB. Postoperative median AB gap was 7.5 (7.5, 11.3) dB in the reverse stapedotomy group and 10.0 (10.0, 12.5) dB in the classic stapedotomy group. While overclosure and AB gap closure were marginally superior in the reverse stapedotomy group, these differences did not reach statistical significance. No significant disparities were observed in the frequency, slow phase velocity, or amplitude of nystagmus in the rotational test. Conclusions: Although not always possible, reverse stapedotomy proved to be a safe surgical technique regarding postoperative outcomes. Its adoption may mitigate risks associated with floating footplate, sensorineural hearing loss, and incus luxation/subluxation, while facilitating the learning curve for less experienced ear surgeons.

Ultra-high-resolution CT of the temporal bone: The end of stapes prosthesis dimensional error and correlation with patient symptoms.

PURPOSE: To describe the reliability of ultra-high-resolution computed tomography (UHR-CT) in the measurement of titanium stapes prostheses using manufacturer data as a reference. MATERIALS AND METHODS: This retrospective study included patients treated by stapedectomy with titanium prostheses who underwent UHR-CT between January 2020 and October 2023. Images were acquired using an ultra-high-resolution mode (slice thickness: 0.25 mm; matrix, 1024 × 1024). Two radiologists independently evaluated the length, diameter, and intra-vestibular protrusion of the prosthesis. Post-operative air-bone gaps (ABGs) were recorded. RESULTS: Fourteen patients were enrolled (mean age, 44.3 ± 13.8 [SD] years, 9 females), resulting in 16 temporal bone UHR-CTs. The exact length was obtained in 81.3 % (n = 13/16) and underestimated by 0.1 to 0.3 mm in the remaining 18.7 % (n = 3/16) CT scans for both readers (mean misestimation: -0.02 ± 0.06 [SD] mm, overall underestimation of 0.43 %). The exact diameter was reported in 75 % (n = 12/16) and 87.5 % (n = 14/16) of the CT scans for readers 1 and 2, respectively, and was off by 0.1 mm in all discrepancies (mean misestimation: 0.01 ± 0.04 [SD] mm, overall overestimation of 2.43 %). Intravestibular prosthesis protrusion was of 0.5 ± 0.43 [SD] mm (range: 0-1) and 0.49 ± 0.44 [SD] mm (range: 0-1.1) for readers 1 and 2, respectively, and did not correlate with ABGs (r = 0.25 and 0.22; P = 0.39 and 0.47 for readers 1 and 2, respectively). Intra and interobserver agreements were excellent. CONCLUSION: UHR-CT provides 99.6 % and 97.6 % accuracy for prosthesis length and diameter measurements, respectively.

Ganancia auditiva en pacientes intervenidos de cirugía del estribo por otosclerosis / Hearing gain in patients undergoing stapes surgery for otosclerosis

Introducción y objetivo: La otosclerosis es una causa de hipoacusia en jóvenes, con mayor frecuencia en mujeres. La cirugía del estribo es un procedimiento correctivo ampliamente aceptado, con el advenimiento de la tecnología y cambios en la técnica, surge la interrogante de si existen diferencias entre ellas. Objetivo: Evaluar si existen diferencias en la ganancia auditiva entre técnicas y abordajes de las cirugías del estribo en pacientes con otosclerosis Método: Se recabaron variables demográficas, clínicas y quirúrgicas. Se aplicó estadística descriptiva. Se empleó prueba U de Mann-Whitney para variables numéricas, así como Kruskal Wallis para comparación diferencias en tres o más grupos. Se consideró significativo un valor de p ≤ a 0.05. Resultados: Entre los años 2020 y 2023 se realizaron 55 cirugías de estribo por otosclerosis, de las cuales 20 se tuvieron que excluir. De 35 cirugías en 31 pacientes, la media de edad de 41.16 ± 8.64 años, 77.4% fueron mujeres, el 51.4 % fueron en el oído derecho; se presentaron comorbilidades en el 25.7%, las complicaciones 5 presentaron hipoacusia, el 88.6 % de los procedimientos se encontró un cierre satisfactorio de la brecha aérea y ósea. No se presentaron diferencia entre las técnicas de la cirugía de estribo y resultados audiológicos postquirúrgicos p=0.872, ni con el tipo de abordaje de visualización p=0.636. Discusión: Nuestros resultados son similares a lo que encontraron algunos autores, no obstante, aún sigue existiendo incertidumbre sobre la mejor técnica. Conclusiones: No se encontraron diferencias estadísticamente significativas en cuanto a la ganancia auditiva con el abordaje de visualización y el tipo de procedimiento en el estribo para la colocación de la prótesis. (AU)

Introduction and objective: Otosclerosis is a cause of hearing loss in young people, more frequently in women. Stapes surgery is a widely accepted corrective procedure, with the advent of technology and changes in technique, the question arises as to whether there are differences between them. Objective: To evaluate whether there are differences in hearing gain between techniques and approaches of stapes surgeries in patients with otosclerosis. Method: Demographic, clinical and surgical variables were collected. Descriptive statistics were applied. The Mann-Whitney U test was used for numerical variables, as well as the Kruskal Wallis test to compare differences in three or more groups. A p value ≤ 0.05 was considered significant. Results: Between 2020 and 2023, 55 stapes surgeries were performed for otosclerosis, of which 20 had to be excluded. Of 35 surgeries in 31 patients, mean age 41.16 ± 8.64 years, 77.4% were women, 51.4% were in the right ear; Comorbidities were present in 25.7%, 5 complications presented hearing loss, in 88.6% of the procedures a satisfactory closure of the air-bone gap was found. There was no difference between stapes surgery techniques and postsurgical audiological results p=0.872, nor with the type of visualization approach p=0.636. Discussion: Our results are similar to what some authors found, however, there is still uncertainty about the best technique. Conclusions: No statistically significant differences were found in terms of hearing gain with the visualization approach and the type of procedure in the stapes for placement of the prosthesis. (AU)

High fluence in laser stapedotomy aggravates transient subjective dizziness.

BACKGROUND: Laser fenestration in stapedotomy has thermal effect to the vestibule. AIMS/OBJECTIVES: To evaluate the role of energy density (fluence) in the severity of postoperative vestibular symptoms. MATERIALS AND METHODS: The retrospective chart-review study included 84 patients with otosclerosis that underwent primary laser stapedotomy. Surgical outcomes, including nystagmus, and subjective vestibular symptoms during one-month follow-up, were compared between potassium titanyl phosphate (KTP) and CO2 laser. According to this study and literature, we assessed the relationship between laser parameters and the incidence of persistent vestibular symptoms lasting more than one week after surgery. RESULTS: The KTP and CO2 laser group included 48 and 36 patients, respectively. Fluence was different between the KTP (637 J/cm2) and CO2 (141 J/cm2) laser (p < .001). The KTP group showed gradual decrease in dizziness during one-month observation period, while the CO2 group exhibited a steep recovery curve in the first postoperative week (9 and 4 d of duration, respectively). The incidence of persistent vestibular symptoms was correlated with both fluence (r = 0.80, p = .01) and spot size (r = -0.74, p = .01). CONCLUSIONS AND SIGNIFICANCE: Appropriate setting of parameters with lower fluence is desirable for the efficiency and safety of laser stapedotomy.Abbreviations: ABG: air-bone gap; SD: standard deviation.

Otic Capsule Demineralization and Hearing Outcome of Stapes Surgery for Osteogenesis Imperfecta in Comparison With Otosclerosis.

OBJECTIVE: To assess the location/number of otic capsule demineralization and hearing outcomes of stapes surgery (SS) for osteogenesis imperfecta (OI) compared with otosclerosis (OS). PATIENTS: This study included 11 and 181 consecutive ears from 6 and 152 patients with OI and OS, respectively. INTERVENTIONS: Demineralization loci observed as hypodense area of the otic capsule were examined using high-resolution computed tomography. All patients underwent SS. MAIN OUTCOME MEASURES: Locations of the hypodense areas were classified into the anterior oval window, anterior internal auditory canal, and pericochlear area. The location/number of hypodense areas and preoperative/postoperative hearing parameters were correlated. Postoperative hearing outcome was evaluated 12 months after surgery. RESULTS: Hypodense area was more frequently observed in OI (9 of 11 ears [81.8%]) than in OS (96 of 181 ears [53.0%]), with significant differences. Multiple sites were involved in 81.8% OI and 18.8% OS patients, showing significant differences. Preoperative air conduction (AC), bone conduction, and air-bone gap (ABG) were 48.9 ± 17.8, 28.0 ± 11.3, and 20.7 ± 8.4 dB, respectively, in OI and 56.2 ± 13.5, 30.5 ± 9.9, and 26.4 ± 9.7 dB, respectively, in OS, demonstrating greater AC and ABG in OS than in OI. Postoperative AC (31.3 ± 20.5 dB), ABG (10.6 ± 10.0 dB), and closure of ABG (12.1 ± 4.7 dB), that is, preoperative ABG minus postoperative ABG of OI, were comparable to those of OS (AC, 30.9 ± 13.3 dB; ABG, 7.0 ± 7.4 dB; closure of ABG, 20.1 ± 11.6 dB). CONCLUSION: OI ears showed more severe demineralization of otic capsule than OS ears. However, favorable hearing outcomes could be obtained through SS for OI and OS ears.

Microdrill Versus Diode Laser in Endoscopic Stapedotomy: A Comparative Study.

BACKGROUND: Microdrill and diode laser are two different methods used in endoscopic stapedotomy for otosclerosis. These two methods have not been compared in endoscopic stapedotomy. AIMS/OBJECTIVES: To analyze the differences between microdrill and diode laser in endoscopic stapedotomy for otosclerosis. MATERIALS AND METHODS: This is a randomized clinical trial; patients with otosclerosis were randomly divided into microdrill group (group A: n = 69) and diode laser group (group B: n = 62). Differences between the two groups were then compared. RESULTS: The preoperative air-bone gap (ABG) was 25.40 ± 10.88 dBHL in group A and 24.84 ± 12.23 dBHL in group B, with no significant between-group difference ( p > 0.05). The postoperative ABG in group A was 13.27 ± 9.91 dBHL versus 11.79 ± 10.82 dBHL in group B, and there was no significant difference between the groups ( p > 0.05). The surgical time in group B (64 ± 31.23 minutes) was significantly longer than that in group A (48 ± 25.62 minutes) ( p = 0.02). There were no significant between-group differences in basic patient-related data, preoperative air conduction (AC), preoperative bone conduction (BC), postoperative AC, distribution of postoperative ABG, preoperative ABG at different frequencies, and postoperative ABG at different frequencies. There was also no significant between-group difference in the average bleeding volume or number of patients with postoperative dizziness. CONCLUSION AND SIGNIFICANCE: The postoperative improvement in hearing level in the two group was equivalent, but group A had the advantage of a shorter operation time. LEVEL OF EVIDENCE: 4.

MRI Safety of Stapes Prostheses: A Systematic Review.

OBJECTIVE: To assess magnetic resonance imaging (MRI) safety of stapes prostheses. DATA SOURCES: Ovid MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Web of Science, and Scopus databases were searched from inception to November 2021 following PRISMA guidelines. REVIEW METHODS: Studies reporting evidence of stapes prosthesis displacement or interaction in adult or pediatric implant recipients undergoing MRI. Cadaveric, animal, and basic studies with nonhuman data were also included. RESULTS: From an initial search of 123 articles, 42 full-text studies were evaluated for eligibility and 19 studies that met the inclusion criteria were included. Motion artifact was reported in a few stainless steel prosthesis types in vitro; however, such displacement was not observed in human cadaver temporal bone studies and had no adverse reported outcomes. A small subgroup of patients in the 1980s received a ferromagnetic stainless steel stapes implant that was recalled and has not been used since 1987. Patients with implants performed in the 1980s should be directed to 1.5T scanners from an abundance of caution. CONCLUSION: Modern (post-1987) stapes prostheses do not pose a risk in vivo when exposed to the magnetic fields of MRI scanners.

The TORP-PORP: A Tympanoplasty Technique for Isolated Defects of the Stapes Suprastructure.

OBJECTIVE: Investigating the outcomes of a surgical approach to treat isolated defects of the stapes suprastructure, using a modified total ossicular replacement prosthesis (TORP) prosthesis as a PORP between the footplate and the incus, effectively creating a TORP-PORP configuration. PATIENTS: Eleven patients (mean age, 37.2 years; 36% male and 64% female) between the years 2007 and 2022. INTERVENTIONS: Therapeutic (ossiculoplasty). MAIN OUTCOME MEASURES: Hearing gain (in dB) in air conduction thresholds at 0.5, 1, 2, 3, and 4 kHz, stability of bone conduction, revision rate. RESULTS: Significant improvement in air conduction between the preoperative and the postoperative cohorts (p = 0.002) with a mean postoperative hearing level of 30.00 ± 5.25 dB. The bone conduction remained stable. We encountered no perioperative complications, and there were no revisions surgery. CONCLUSIONS: The described ossiculoplasty procedure is a safe and effective approach to treat isolated defects of the stapes suprastructure.

Linear transmission between malleus and stapes in cases with incus necrosis.

OBJECTIVE: The outcome of cartilage interposition ossiculoplasty was assessed in cases of incus necrosis after posterior malleus repositioning in the plane of the stapes, in terms of hearing gain after ossicular reconstruction. METHODS: A retrospective observational study was conducted of 30 patients admitted to an Ain Shams University hospital from March 2021 to September 2021. All patients with ossicular disruption due to chronic suppurative otitis media and hearing loss of more than 40 dB were included in the study. Pure tone audiometry was conducted for each patient after three months, six months and one year post operation. RESULTS: The audiogram showed a post-operative air-bone gap of 20 dB or less in 83.33 per cent of patients (n = 25) at three months post-operatively and in 80 per cent of patients after six months; after one year, the results remained the same. CONCLUSION: The use of cartilage interposition after malleus posterior mobilisation represents an excellent partial ossicular replacement technique.

[The application of endoscope and microscope in the stapes surgeries].

Objective:To compare the application of endoscope and microscope in all kinds of stapes surgeries. Methods:Fifty-nine stapes surgeries have been collected from April 2020 to May 2023 in Senior Department of Otolaryngology Head and Neck Surgery, Chinese PLA General Hospital, Chinese PLA Medical School. Hearing level, hospital stay post-operation, times of hospital visit post-operation, etc. have been compared between the endoscopic group and microscopic group. Patients who were failed to place the stapes prosthesis because of the poor exposure of the oval window have been analyzed. Results:Otosclerosis was the most common diagnosis in both groups. There was 1（1/23） middle ear malformation in the endoscopic group and 5（5/36） middle ear malformations in the microscopic group. There were 2 Van Der Hover syndromes and 4 Treacher Collins syndromes in the microscopic group. In the endoscopic group ABG of 10 ears（43.5%） ≤ 10 dB, and ABG of 21 ears（91.3%） ≤20 dB.In the microscopic group ABG of 13 ears（41.9%） ≤ 10 dB, and ABG of 28 ears（90.3%） ≤ 20 dB. There was no statistic difference between 2 groups. Times of hospital visit post-operation in the endoscopic group was less than in the microscopic group（P<0.01）. There was no facial palsy, tympanic perforation or profound sensorineural hearing loss in both groups. Conclusion:Endoscope is more suitable for patients who are evaluated with no severe stapes malformation, or less manipulation of drilling the bone. It could also reduce the hospital visit post-operation. Patients with narrow ear canal or severe middle ear malformation are recommended to perform the surgery with microscope, because it provides the chance of manipulation with 2-hands of surgeons.

Modern Trends in Otologic Surgery and Implications for Residency Training.

OBJECTIVE: Placing a middle ear prosthesis is considered a key competency for the general otolaryngologist, but surgeons struggle to obtain and maintain this skill. The current study aims to characterize pre-coronavirus disease 2019 trends in stapedectomy and ossiculoplasty. STUDY DESIGN: Database review. SETTING: Tricare beneficiaries are treated at civilian and military facilities. METHODS: The Department of Defense beneficiary population of more than nine million persons per year was reviewed for patients undergoing either stapedectomy or ossiculoplasty between 2010 and 2019, identified by the current procedural terminology code. RESULTS: A total of 3052 stapedectomies and 7197 ossiculoplasties were performed. Over the 10-year study period, stapedectomy decreased by 23%, with an average annual rate of -2.7% per year (Pearson r = -.91, P = .0003). Ossiculoplasties declined by 18%, an average annual rate of -1.9% (r = -.8, P = .006). In combination, cases declined by 20%, an average annual rate of -2.2% (r = -.87, P = .001). CONCLUSION: While declines in stapedectomy surgery have been well reported, here we show steady declines in ossiculoplasty as well. If these trends continue, more cochlear implantations may be performed annually than stapedectomy and ossiculoplasty combined, with cochlear implantation likely to overtake ossicular chain surgery in the near future. These changes in surgical volume have a direct implication on resident education and general otolaryngology expectations after graduation. Strong consideration should be made to replace "Stapedectomy/Ossiculoplasty" as resident key indicator with "Cochlear Implantation," a more professionally meaningful skill.

Conventional vs. diode laser stapedotomy: audiological outcomes and clinical safety.

PURPOSE: To compare the hearing results and clinical safety of patients undergoing stapes surgery with conventional technique and diode laser. METHODS: Retrospective observational study, which included patients treated with primary stapes surgery performed between January 2009 and January 2020. Three audiometric measurements (PTA, GAP and SDS) were evaluated as main results, evaluated by analysis of covariance (controlling the preoperative value). Intraoperative and postoperative complications were also analyzed. Outcomes were measured 6 months (± 1 month) after surgery. RESULTS: 153 cases were included, 97 operated with conventional technique and 56 with laser technique. Postoperative GAP ≤ 10 dB was obtained in 85.6% of the total sample, 82.5% in the conventional technique and 91.1% in the laser technique. Analysis of covariance showed no significant differences in the three surgery outcomes between the two groups (PTA, p = 0.277; GAP, p = 0.509 and SDS, p = 0.530). Regarding surgical complications, sensorineural damage was higher in the conventional technique group (p = 0.05). On the other hand, there were four cases of facial paresis, all in the laser group, three of them with the 980 nm laser. CONCLUSIONS: Stapedotomy offered a high percentage of hearing success in the two groups studied. There were no significant differences in audiometric result, but there was a differential presentation of complications, being more frequent sensorineural hearing loss in the conventional technique group and facial paresis in the laser group.

The effect of local dexamethasone on stapedotomy surgery outcomes in patients with otosclerosis.

BACKGROUND: Some studies have shown a positive effect of systemic corticosteroid on hearing results after stapedotomy, but its side effects can limit its routine administration. AIM: The aim of this study was to investigate the effect of local dexamethasone on the results of stapedotomy surgery. MATERIAL AND METHODS: Fifty two patients undergone stapedotomy surgery for otosclerosis involved. In the case group after stapedotomy we fulfilled the middle ear with dexamethasone and then the placement of the prosthesis was done. In the control group after stapedotomy we did not use dexamethasone in the middle ear. RESULTS: Gender, age, nausea, vomiting, postoperative vertigo and nystagmus did not significantly differ between the groups. A significant difference was observed in tinnitus rate between two groups. In the case group ABG decrease was higher and bone conduction thresholds improved at frequencies of 1000, 2000, and 4000 three months after surgery. CONCLUSION: Since local dexamethasone had a positive effect on the results of stapedotomy surgery, it can be used instead of systemic corticosteroids to reduce the side effects and increasing surgery's success rate. SIGNIFICANCE: If local dexamethasone had a positive influence on the results of stapedotomy surgery, it can be used instead of systemic corticosteroids to reduce the side effects and increasing surgery's success rate.

The effect of piston diameter in primary stapes surgery on surgical success.

PURPOSE: To evaluate the effect of piston diameter in patients undergoing primary stapes surgery on audiometric results and postoperative complications. METHODS: A retrospective single-center cohort study was performed. Adult patients who underwent primary stapes surgery between January 2013 and April 2022 and received a 0.4-mm-diameter piston or a 0.6-mm-diameter piston were included. The primary and secondary outcomes were pre- and postoperative pure-tone audiometry, pre- and postoperative speech audiometry, postoperative complications, intraoperative anatomical difficulties, and the need for revision stapes surgery. The pure-tone audiometry included air conduction, bone conduction, and air-bone gap averaged over 0.5, 1, 2 and 3 kHz. RESULTS: In total, 280 otosclerosis patients who underwent 321 primary stapes surgeries were included. The audiometric outcomes were significantly better in the 0.6 mm group compared to the 0.4 mm group in terms of gain in air conduction (median = 24 and 20 dB, respectively), postoperative air-bone gap (median = 7.5 and 9.4 dB, respectively), gain in air-bone gap (median = 20.0 and 18.1 dB, respectively), air-bone gap closure to 10 dB or less (75% and 59%, respectively) and 100% speech reception (median = 75 and 80 dB, respectively). We found no statistically significant difference in postoperative dizziness, postoperative complications and the need for revision stapes surgery between the 0.4 and 0.6 mm group. The incidence of anatomical difficulties was higher in the 0.4 mm group. CONCLUSION: The use of a 0.6-mm-diameter piston during stapes surgery seems to provide better audiometric results compared to a 0.4-mm-diameter piston, and should be the preferred piston size in otosclerosis surgery. We found no statistically significant difference in postoperative complications between the 0.4- and 0.6-mm-diameter piston. Based on the results, we recommend always using a 0.6-mm-diameter piston during primary stapes surgery unless anatomical difficulties do not allow it.

Quantifying the effect of shoulder size on operation duration: an analysis of stapes surgery outcomes.

OBJECTIVE: To investigate the effect of body mass index on hearing outcomes, operative time and complication rates following stapes surgery. METHOD: This is a five-year retrospective review of 402 charts from a single tertiary otology referral centre from 2015 to 2020. RESULTS: When the patient's shoulder was adjacent to the surgeon's dominant hand, the average operative time of 40 minutes increased to 70 minutes because of a significant positive association between higher body mass index and longer operative times (normal body mass index group (<25 kg/m2) r = 0.273, p = 0.032; overweight body mass index group (25-30 kg/m2) r = 0.265, p = 0.019). Operative times were not significantly longer upon comparison of low and high body mass index groups without stratification by laterality (54.9 ± 19.6 minutes vs 57.8 ± 19.2 minutes, p = 0.127). CONCLUSION: There is a clinically significant relationship between body mass index and operating times. This may be due to access limitations imposed by shoulder size.