[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-436236-105":59,"doc-detail-436236-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","endoscopic-atticotomy-for-attic-cholesteatomas-using-piezosurgery","Endoscopic atticotomy for attic cholesteatomas using piezosurgery","","Attic cholesteatomas can be removed via transcanal endoscopic ear surgery (TEES), but exclusive transcanal endoscopic atticotomy is performed in a limited operative field. This study evaluates the feasibility of using piezosurgery versus a microdrill for endoscopic atticotomy during exenteration of attic cholesteatomas. Retrospective TEES cases underwent bone excision with either technique, and pre- and postoperative hearing thresholds were assessed by pure-tone audiometry.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/endoscopic-atticotomy-for-attic-cholesteatomas-using-piezosurgery/436236/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/endoscopic-atticotomy-for-attic-cholesteatomas-using-piezosurgery/436236.png","ImageObject",300,407,{"name":92,"@type":93},"River Wang","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":44},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What was the main aim of this study?","Question",{"text":112,"@type":113},"To investigate the feasibility of using piezosurgery compared with a microdrill for endoscopic atticotomy during exenteration of attic cholesteatomas.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How were hearing outcomes measured?",{"text":117,"@type":113},"Preoperative and postoperative hearing thresholds were measured using pure-tone audiometry.",{"name":119,"@type":110,"acceptedAnswer":120},"What did the study find regarding operative duration and injury risk?",{"text":121,"@type":113},"Operative duration was longer with piezosurgery than with microdrill, while friction injuries from drilling occurred in the microdrill group but not in the piezosurgery group.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},436236,1790764407,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":44,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":29,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":144,"preview_page_count":4},1099514067438,"https://ap-avatar.wpscdn.com/avatar/100002539ee87300030?x-image-process=image/resize,m_fixed,w_180,h_180&k=1780474512215547542","J Chin MedAssoc  \nOriginal article  \nEndoscopic atticotomy for attic cholesteatomas using piezosurgery  \nChin-Kuo Chena,b,c, Che-Fang Hoa, Chen-Yu Chiend,e, Hsin-Ting Yangb, Li-Chun Hsiehf,g,*  \naDepartment of Otolaryngology-Head and Neck Surgery, Chang Gung Memorial Hospital, Keelung, Taiwan, ROC, bSchool of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC, cDepartment of OtolaryngologyHead and Neck Surgery and Communication Enhancement Center, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ROC, dDepartment of Otorhinolaryngology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC, eDepartment of Otorhinolaryngology, School of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC, fDepartment of Otolaryngology-Head and Neck Surgery, Mackay Memorial Hospital, Taipei, Taiwan, ROC, gDepartment of Audiology and Speech Language Pathology, Mackay Medical College, New Taipei, Taiwan, ROC  \nAbstract  \nBackground: Attic cholesteatomas can be exenterated by transcanal endoscopic ear surgery (TEES) . In the limited operative field of exclusive transcanal endoscopic atticotomy, surgeons use either a piezosurgery scalpel or a drilling system to remove the posterior lateral bony wall of the epitympanum. We aimed to investigate the feasibility of using piezosurgery or microdrill for endoscopic atticotomy during exenteration of attic cholesteatomas.  \nMethods: This study is a retrospective chart review of patients diagnosed with attic cholesteatoma, who were treated by exclusive TEES. The superior and posterior external auditory canal bones were excised using a piezosurgery scalpel or microdrill. Preoperative and postoperative hearing thresholds were measured by pure-tone audiometry.  \nResults: The postoperative follow-up duration varied from 6 to 37 months. There were no significant differences in age, sex, laterality of the affected ear, and preoperative bone conduction thresholds between the piezosurgery scalpel and microdrill groups. The operative duration was longer in the piezosurgery group than in the microdrill group (135 .6 ± 19.5 minutes vs 117.3 ± 29.1 minutes, p = 0.042) . Seven of 30 (23 .3%) patients in the microdrill group, but none in the piezosurgery group, had a friction injury from the drilling. Postoperative testing at higher frequencies of 2000, 3000, and 4000 Hz showed no deterioration in the bone conduction threshold in the piezosurgery group.  \nConclusion: Endoscopic atticotomy performed using a piezosurgery scalpel is potentially safer but slower than using a microdrill for exenteration of attic cholesteatomas.  \nKeywords: Attic cholesteatoma; Atticotomy; Endoscopic ear surgery; Microdrill; Piezoelectric surgery; Piezosurgery  \n1. INTRODUCTION  \nAttic cholesteatoma is destructive to the epitympanum and is usually treated by microscopic ear surgery (MES) with microdrills, which may damage the surrounding soft tissues and nerves.1,2 Compared with MES, transcanal endoscopic ear surgery (TEES) has some advantages, such as being more minimal invasiveness, better access to the middle ear, less pain, faster recovery, comparable postoperative outcomes, and better cosmetic results.3,4 TEES has been gaining attention after exclusive management of attic cholesteatomas by Tarabichi.5 A systematic review by Presutti et al6 concluded that cholesteatomas treated  \n* Address correspondence. Dr. Li-Chun Hsieh, Department of OtolaryngologyHead and Neck Surgery, Mackay Memorial Hospital, 92, Section 2, Zhongshan North Road, Taipei 104, Taiwan, ROC. E-mail address: lichunhsieh1978@gmail. com (L.-C. Hsieh).  \nConflicts of interest: The authors declare that they have no conflicts of interest related to the subject matter or materials discussed in this article.  \nJournal of Chinese Medical Association. (2024) 87: 236-241.  \nReceived June 8, 2023; accepted October 8, 2023. doi: 10. 1097/JCMA.0000000000001045  \nCopyright © 202","cbCaihnNfB67YeAu","https://ap.wps.com/l/cbCaihnNfB67YeAu","pdf",504260,"English","# Abstract\n## Background\n## Methods\n## Results\n## Conclusion\n# INTRODUCTION\n# METHODS\n## Patients","[{\"question\":\"What was the main aim of this study?\",\"answer\":\"To investigate the feasibility of using piezosurgery compared with a microdrill for endoscopic atticotomy during exenteration of attic cholesteatomas.\"},{\"question\":\"How were hearing outcomes measured?\",\"answer\":\"Preoperative and postoperative hearing thresholds were measured using pure-tone audiometry.\"},{\"question\":\"What did the study find regarding operative duration and injury risk?\",\"answer\":\"Operative duration was longer with piezosurgery than with microdrill, while friction injuries from drilling occurred in the microdrill group but not in the piezosurgery group.\"}]","Endoscopic atticotomy for attic cholesteatomas using piezosurgery | PDF",1790677276,15]