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For wrist-level gaps, wrist flexion may reduce the gap, though maintaining it during and after surgery is difficult. This study details a 1.6-mm K-wire radiocarpal pinning technique and reports patient outcomes.",{"@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/outcomes-of-radiocarpal-pinning-to-facilitate-nerve-repair-in-wrist-level-ulnar-nerve-injuries-with-defect/436343/",{"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/outcomes-of-radiocarpal-pinning-to-facilitate-nerve-repair-in-wrist-level-ulnar-nerve-injuries-with-defect/436343.png","ImageObject",300,407,{"name":92,"@type":93},"Mia  ","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-06","2026-09-29",true,{"@type":102,"interactionType":103,"userInteractionCount":52},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What problem does the study address in delayed wrist-level ulnar nerve injuries?","Question",{"text":112,"@type":113},"Delayed injuries may cause soft-tissue loss, scarring, and neuroma formation, leading to a nerve defect that makes end-to-end neurorrhaphy more difficult due to a nerve gap.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does radiocarpal pinning in wrist flexion help nerve repair?",{"text":117,"@type":113},"Fixing the wrist in flexion shortens the nerve gap, which facilitates neuroma excision and end-to-end neurorrhaphy, while also protecting the neurorrhaphy until the K wire is removed.",{"name":119,"@type":110,"acceptedAnswer":120},"What were the key outcomes reported for the five patients in this case series?",{"text":121,"@type":113},"All five patients achieved M4 and S3 or S3+ neurologic grades, wrist range of motion returned to normal within 12 weeks, and no intraoperative or postoperative complications were reported.","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},436343,1790763914,{"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":52,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"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":52,"preview_page_count":4},687207024478,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","J Chin MedAssoc  \nOriginal article  \nOutcomes of radiocarpal pinning to facilitate nerve repair in wrist-level ulnar nerve injuries with defect  \nI-Ning Loa,b,c, Cheng-Yu Yina,b, Hui-Kuang Huanga,b,d,e, Yi-Chao Huanga,b, Jung-Pan Wanga,b,*  \naDepartment of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC; bDepartment of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC; cDepartment of Orthopaedicsand Traumatology, Taipei Veterans General Hospital Taitung Branch, Taitung, Taiwan, ROC; dDepartment of Orthopaedics, Chiayi Christian Hospital, Chiayi, Taiwan, ROC; eChung Hwa University of Medical Technology, Tainan, Taiwan, ROC  \nAbstract  \nBackground: The ideal scenario for ulnar nerve repair is primary end-to-end neurorrhaphy in a tension-free environment. However, this could be complicated by soft tissue loss, scarring, and neuroma formation in a delayed injury, creating a nerve defect. With a wrist-level nerve defect, a flexion position can help shorten the nerve gap; however, maintaining the position can be challenging intraoperatively and postoperatively.  \nMethods: Previously, we proposed our method of using a 1.6-mm K wire for radius-lunate-capitate pinning of the wrist in flexionto minimize the nerve gap, thereby facilitating neuroma excision and end-to-end neurorrhaphy in delayed ulnar nerve injury. In this study, we elaborate our method and present our case series.  \nResults: From October 2018 to July 2020, five patients (mean age: 48.2 years; mean delay from injury to surgery: 84.6 days; mean follow-up: 17.5 months) were retrospectively reviewed. The mean flexion fixation angle was 52°, and the K wire was removed at an average of 5.1 weeks postoperatively. All patients were followed up for a minimum of 12 months. All patients achieved M4 and S3 or S3+ neurologically (according to the criteria of the Nerve Injuries Committee of the British Medical Research Council) . The mean disabilities arm, shoulder, and hand score was 14.1. The mean grasp and pinch strengths were, respectively, 76.8% and 63.6% of the contralateral hand. All wrist range of motion returned to normal within 12 weeks. No complications were noted intraoperatively or postoperatively.  \nConclusion: Our study showed that radiocarpal pinning of the wrist in flexion was safe and convenient to minimize the nerve gap and to facilitate end-to-end neurorrhaphy in limited-sized wrist-level ulnar nerve defects.  \nKeywords: Arm; Neuroma; Pinch strength; Shoulder; Ulnar nerve  \n1. INTRODUCTION  \nThe ulnar nerve function is crucial for performing intricate and dexterous tasks with our hands in daily life. Ulnar nerve injuries occurring at the wrist may cause loss of sensation at the little finger and the ulnar half of the ring finger, and weakness of the hypothenar muscles, the two medial lumbricals, interosseous muscles, adductor pollicis, and the deep head of the flexor pollicis brevis muscle.1,2 Impairment of the aforementioned functions results insubstantial functional disability and decreased quality of life.  \nPast literature has concluded that some factors could lead to better surgical results for ulnar nerve repair, including younger patient age, injury at a lower level, shorter delayed time to  \n* Address correspondence. Dr. Jung-Pan Wang, Department of Orthopedics and Traumatology, Taipei Veterans General Hospital, 201, Section 2, Shi-Pai Road, Taipei 112, Taiwan, [ROC. E-mail address: jpwang801@gmail.com](ROC. E-mail address: jpwang801@gmail.com) (J.-P. Wang). Conflicts 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. (2023) 86: 981-984.  \nReceived April 10, 2023; accepted May 18, 2023. doi: 10. 1097/JCMA.0000000000001000  \nCopyright © 2023, the Chinese Medical Association. This is an open access article under the CC BY-NC-ND license ([http://c","cbCairWlclyPMZBP","https://ap.wps.com/l/cbCairWlclyPMZBP","pdf",621346,"English","# Introduction\n## Methods\n### Preoperative evaluations\n# Results\n# Conclusion","[{\"question\":\"What problem does the study address in delayed wrist-level ulnar nerve injuries?\",\"answer\":\"Delayed injuries may cause soft-tissue loss, scarring, and neuroma formation, leading to a nerve defect that makes end-to-end neurorrhaphy more difficult due to a nerve gap.\"},{\"question\":\"How does radiocarpal pinning in wrist flexion help nerve repair?\",\"answer\":\"Fixing the wrist in flexion shortens the nerve gap, which facilitates neuroma excision and end-to-end neurorrhaphy, while also protecting the neurorrhaphy until the K wire is removed.\"},{\"question\":\"What were the key outcomes reported for the five patients in this case series?\",\"answer\":\"All five patients achieved M4 and S3 or S3+ neurologic grades, wrist range of motion returned to normal within 12 weeks, and no intraoperative or postoperative complications were reported.\"}]","Outcomes of radiocarpal pinning to facilitate nerve repair in wrist-level ulnar nerve injuries with defect | PDF",1790677674]