ABSTRACT
Background and Objectives@#Interposition using acellular allograft between perforated septal flaps is a popular procedure among surgeons because of its usefulness. However, allograft dermal matrix itself tends to become infected sometimes, and can easily undergo necrosis or be displaced from the implanted site. Here, the authors would like to introduce a newly devised interposition graft made up of allograft and cartilage, which is easy to manipulate and can be fixed in the desired position.Subjects and Method We performed a retrospective chart review from January 2018 to August 2020. A total of 12 patients with septal perforation who received surgical treatment were included in this study. Acellular human dermal allograft (MegaDerm® ; L&C Bio) was used as an interposition allograft piled up by autologous cartilage, and it was positioned between the mucoperichondrial flaps via the endonasal approach. @*Results@#The most common etiology was previous septal surgery (n=8); in one case, the etiology was repeated electrocauterization due to frequent epistaxis; the etiology was not verified for three cases. All 12 cases achieved the result of complete septal perforation closure. All patients on follow-up inquiry reported marked improvements in the visual analogue scale score (mean value, 4.1 to 1) and Nasal Obstruction Symptom Evaluation scale (mean value, 7.3 to 1.8). @*Conclusion@#Composite graft made up of cartilage and allograft dermal matrix achieved successful results without having to fix the graft. It can be an alternative technique to treat septal perforation for inexperienced surgeons and with a limited operation field.
ABSTRACT
Background and Objectives@#Surgical resection is the basic treatment for benign laryngeal tumors and transoral laser microsurgery (TLM) has been used effectively. Transoral videolaryngoscopic surgery (TOVS) is another method of surgical resection that has been introduced. However, there have not been any studies related to the usefulness of TOVS in benign laryngeal tumors. The purpose of this study was to compare the efficacy and surgical outcomes of TLM and TOVS.Subjects and Method A retrospective chart review of 85 patients were conducted. This review included two groups (TLM group, n=44 versus TOVS group, n=41) of patients who underwent transoral surgery for benign laryngeal tumors. Clinicopathologic factors of the patients and surgical outcomes such as the operation time, amount of intraoperative bleeding, hospital stay, and complications were compared between two groups. @*Results@#There were no significant differences between two groups regarding the clinicopathologic factors and surgical outcomes. The TOVS group presented relatively larger tumor size (p=0.067) and showed a tendency of shorter operation time (36.8±34.5 min) compared to that of TLM (45.6±27.9 min), but with no statistical significance (p=0.199). @*Conclusion@#TOVS may be considered as an alternative surgical method for benign laryngeal tumors.
ABSTRACT
OBJECTIVES: Despite patients with dizziness were reported of revealing gait problems, there is still lack of objective quantitative measurement of gait patterns of peripheral vestibular disorders. To demonstrate gait variability in acute unilateral peripheral vestibular deficit, we evaluated the differences in gait patterns between vestibular neuritis (VN) patients and healthy subjects by the use of shoe-type inertial measurement unit (IMU) with sensors mounted. METHODS: Between April 2017 and January 2019, 30 patients diagnosed with unilateral peripheral vestibular deficit presumed to be caused by VN were enrolled in this study. The shoe-type IMU was used to analysis subjects. We assessed gait speed, cadence, stride length, stance phase, normalized stride length, normalized step length, phase coordination index and gait asymmetry of data from shoe-type IMU sensors with the walking protocol. We tested 30 healthy volunteers as control group. RESULTS: We identified spatiotemporal parameters of human gait. The gait speed of patients with VN was decreased to 3.82±0.8 compared to 4.93±1.08 in control group. In addition, there were differences in normalized stride length, normalized gait speed and related gait parameters, when comparing VN group and control group. CONCLUSION: Gait analysis by the use of shoe-type IMU could provide important information regarding vestibular pathophysiology in patients with VN. Gait performance tests can examine gait variability quantitatively. It will be taken into consideration as a vestibular function test for patients with vertigo.