1.Cage design-centric glider approach to full-endoscopic lumbar fusion: optimizing nerve root protection in facet-sparing and facet-resecting techniques
Yu-Chia HSU ; Hao-Chun CHUANG ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun-Sung KIM ; Cheng-Li LIN
Asian Spine Journal 2026;20(2):343-353
Endoscopic transforaminal lumbar interbody fusion (TLIF) offers substantial advantages in the management of degenerative spinal diseases, including accelerated postoperative recovery. However, its technical complexity and steep learning curve pose risks for nerve root injury. Optimizing nerve root protection in full-endoscopic facet-sparing TLIF (FE fs-TLIF) and full-endoscopic facet-resecting TLIF (FE fr-TLIF) is essential for enhancing surgical safety. This study aimed to improve the nerve root protection in FE fs-TLIF and FE fr-TLIF by optimizing cage glider selection and insertion techniques based on the specific cage shape—banana-shaped or bullet-shaped. The goal was to ensure safe cage positioning and mitigate nerve root injury during discectomy, endplate preparation, and cage insertion. These strategies were validated through cadaveric simulations and clinical implementation. In FE fr-TLIF utilizing bullet-shaped (straight) cages, one-tip and two-tip cage gliders effectively protected the traversing nerve root by facilitating medial cage entry, thereby minimizing irritation of the exiting nerve root. Conversely, in FE fr-TLIF with banana-shaped cages, the lateral tilt of the cage holder during implantation required the use of a two-tip cage glider to protect the traversing and exiting nerve roots, thereby mitigating the potential risk of nerve irritation. In FE fs-TLIF, a one-tip cage glider is preferred for safeguarding the exiting nerve root, while the traversing root is inherently protected by the medial wall of the facet joint. The use of a two-tip cage glider in FE fs-TLIF can cause injury to the nerve root during glider insertion. In addition to the selection of cage gliders, improper cage insertion steps can also contribute to postoperative neurapraxia. The appropriate selection of cage gliders with corresponding insertion techniques is critical for nerve root protection in endoscopic TLIF. Tailoring these choices to the specific approach (FE fs-TLIF or FE fr-TLIF) and cage type (banana or bullet) enhances surgical safety and clinical outcomes.
2.Prognostic Utility of the Albumin-to-Alkaline Phosphatase Ratio in Head and Neck Cancer: A Systematic Review and Meta-Analysis
Yun-Ting WANG ; Adarsh KUDVA ; Yen-Ting LU ; Liang-Tseng KUO ; Chia-Hsuan LAI ; Yuan-Hsiung TSAI ; Chun-Ta LIAO ; Ku-Hao FANG ; Chung-Jan KANG ; Ethan I. HUANG ; Cheng-Ming HSU ; Geng-He CHANG ; Ming-Shao TSAI ; Yao-Te TSAI
Clinical and Experimental Otorhinolaryngology 2026;19(1):45-54
Objectives:
. The prognostic value of the pretreatment albumin-to-alkaline phosphatase ratio (AAPR) in head and neck cancer (HNC) remains uncertain. This meta-analysis aimed to evaluate the predictive role of AAPR for survival outcomes in patients with HNC.
Methods:
. A comprehensive search of the Cochrane Library, PubMed, and Embase databases was conducted to identify relevant studies published up to July 30, 2024. We included studies on AAPR and survival outcomes in HNC patients.
Results:
. Eight studies comprising 1,737 HNC patients were analyzed using random-effects models. Lower AAPR values were significantly correlated with worse overall survival (hazard ratio [HR], 2.08), progression-free survival (HR, 2.00), and disease-free survival (HR, 2.18). Sensitivity analyses confirmed the robustness of these results, with no significant publication bias detected.
Conclusion
. Our findings suggest that pretreatment AAPR could serve as a valuable and cost-effective prognostic indicator in HNC, potentially aiding clinicians in risk stratification and treatment decision-making. However, additional validation studies are warranted to confirm its clinical applicability.
3.Innovative Nerve Root Protection in Full-Endoscopic Facet-Resecting Lumbar Interbody Fusion: Controlled Cage Glider Rotation Using the GUARD (Glider Used As a Rotary Device) Technique
Yu-Chia HSU ; Hao-Chun CHUANG ; Wei-Lun CHANG ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun-Sung KIM ; Cheng-Li LIN
Neurospine 2024;21(4):1141-1148
This video presents a case of L4–5 unstable spondylolisthesis treated with full-endoscopic transforaminal lumbar interbody fusion (Endo-TLIF), emphasizing the GUARD (Glider Used as a Rotary Device) technique for nerve root protection. This innovative approach involves controlled rotation of the cage glider before cage insertion to minimize the risk of nerve root injury, a significant complication in Endo-TLIF procedures. The GUARD technique, validated in previous cadaveric studies, provides enhanced safety during cage insertion by protecting the nerve root. A 48-year-old woman with a 3-year history of progressive low back pain and bilateral lower extremity radiculopathy (right-sided predominance) was diagnosed with L4–5 unstable spondylolisthesis and spinal stenosis. After failure of conservative management, she underwent uniportal full-endoscopic facet-resecting transforaminal lumbar interbody fusion using the GUARD technique. Postoperatively, the patient experienced significant symptomatic improvement and resolution of radiculopathy, without any intraoperative nerve root injury or postoperative neurological deficits. This case demonstrates the effectiveness of the GUARD technique in reducing neurological complications and improving patient outcomes.
4.Reducing Postoperative Neurological Complications in Uniportal Full-Endoscopic Lumbar Interbody Fusion: Efficacy of the GUARD Technique Combined With Delayed Ligamentum Flavectomy
Hao-Chun CHUANG ; Yu-Chia HSU ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun Sung KIM ; Cheng-Li LIN
Neurospine 2024;21(4):1199-1209
Objective:
Uniportal full-endoscopic transforaminal lumbar interbody fusion (FE-TLIF) carries a unique risk of nerve traction and abrasion injury during cage insertion. This study aims to evaluate the clinical efficacy of the GUARD technique and delayed ligamentum flavectomy in reducing postoperative radicular pain and neurapraxia in patients undergoing uniportal FE-TLIF.
Methods:
A retrospective analysis was conducted on 45 patients with an average age of 53.9±12.4 years who underwent either FE facet-sparing TLIF (FE fs-TLIF) or FE facet-resecting TLIF (FE fr-TLIF). Patients were divided into 2 groups: the sentinel group (21 patients) using traditional sentinel pin techniques, and the GUARD group (24 patients) using the GUARD technique with delayed ligamentum flavectomy. Patient-reported outcomes included the visual analogue scale (VAS) for leg and back pain, and Oswestry Disability Index. Complication rates, including incidental durotomy, postoperative neurapraxia, and hematoma, were also documented.
Results:
Postoperative radicular pain in the legs was significantly reduced at 6 weeks in the GUARD group compared to the sentinel group (VAS: 2.201 vs. 3.267, p=0.021). The incidence of postoperative neurapraxia was markedly lower in the GUARD group (0% vs. 19%, p=0.047). Both groups showed similar improvements in disc height, segmental lordosis, and lumbar lordosis at the 1-year follow-up, with no significant differences in endplate injury or fusion rates.
Conclusion
The GUARD technique and delayed ligamentum flavectomy significantly enhance patient safety by reducing postoperative radicular pain and neurapraxia without incurring additional costs. These techniques are easy to learn and integrate into existing surgical workflows, offering a valuable improvement for surgeons performing FE-TLIF procedures.
5.The Clinical Characteristics and Manifestation of Anxious Depression Among Patients With Major Depressive Disorders-Results From a Taiwan Multicenter Study
Huang-Li LIN ; Wei-Yang LEE ; Chun-Hao LIU ; Wei-Yu CHIANG ; Ya-Ting HSU ; Chin-Fu HSIAO ; Hsiao-Hui TSOU ; Chia-Yih LIU
Psychiatry Investigation 2024;21(6):561-572
Objective:
Anxious depression is a prevalent characteristic observed in Asian psychiatric patients diagnosed with major depressive disorder (MDD). This study aims to investigate the prevalence and clinical presentation of anxious depression in Taiwanese individuals diagnosed with MDD.
Methods:
We recruited psychiatric outpatients aged over 18 who had been diagnosed with MDD through clinical interviews. This recruitment took place at five hospitals located in northern Taiwan. We gathered baseline clinical and demographic information from the participants. Anxious depression was identified using a threshold of an anxiety/somatization factor score ≥7 on the 21-item Hamilton Rating Scale for Depression (HAM-D).
Results:
In our study of 399 patients (84.21% female), 64.16% met the criteria for anxious depression. They tended to be older, married, less educated, with more children, and an older age of onset. Anxious depression patients had higher HAM-D and Clinical Global Impression–Severity scale score, more panic disorder (without agoraphobia), and exhibited symptoms like agitation, irritability, concentration difficulties, psychological and somatic anxiety, somatic complaints, hypochondriasis, weight loss, and increased insight. Surprisingly, their suicide rates did not significantly differ from non-anxious depression patients. This highlights the importance of recognizing and addressing these unique characteristics.
Conclusion
Our study findings unveiled that the prevalence of anxious depression among Taiwanese outpatients diagnosed with MDD was lower compared to inpatients but substantially higher than the reported rates in European countries and the United States. Furthermore, patients with anxious depression exhibited a greater occurrence of somatic symptoms.
6.Management of ulcerative colitis in Taiwan: consensus guideline of the Taiwan Society of Inflammatory Bowel Disease updated in 2023
Hsu-Heng YEN ; Jia-Feng WU ; Horng-Yuan WANG ; Ting-An CHANG ; Chung-Hsin CHANG ; Chen-Wang CHANG ; Te-Hsin CHAO ; Jen-Wei CHOU ; Yenn-Hwei CHOU ; Chiao-Hsiung CHUANG ; Wen-Hung HSU ; Tzu-Chi HSU ; Tien-Yu HUANG ; Tsung-I HUNG ; Puo-Hsien LE ; Chun-Che LIN ; Chun-Chi LIN ; Ching-Pin LIN ; Jen-Kou LIN ; Wei-Chen LIN ; Yen-Hsuan NI ; Ming-Jium SHIEH ; I-Lun SHIH ; Chia-Tung SHUN ; Tzung-Jiun TSAI ; Cheng-Yi WANG ; Meng-Tzu WENG ; Jau-Min WONG ; Deng-Chyang WU ; Shu-Chen WEI
Intestinal Research 2024;22(3):213-249
Ulcerative colitis (UC) is a chronic inflammation of the gastrointestinal tract and is characterized by alternating periods of inflammation and remission. Although UC incidence is lower in Taiwan than in Western countries, its impact remains considerable, demanding updated guidelines for addressing local healthcare challenges and patient needs. The revised guidelines employ international standards and recent research, emphasizing practical implementation within the Taiwanese healthcare system. Since the inception of the guidelines in 2017, the Taiwan Society of Inflammatory Bowel Disease has acknowledged the need for ongoing revisions to incorporate emerging therapeutic options and evolving disease management practices. This updated guideline aims to align UC management with local contexts, ensuring comprehensive and context-specific recommendations, thereby raising the standard of care for UC patients in Taiwan. By adapting and optimizing international protocols for local relevance, these efforts seek to enhance health outcomes for patients with UC.
7.Management of Crohn’s disease in Taiwan: consensus guideline of the Taiwan Society of Inflammatory Bowel Disease updated in 2023
Jia-Feng WU ; Hsu-Heng YEN ; Horng-Yuan WANG ; Ting-An CHANG ; Chung-Hsin CHANG ; Chen-Wang CHANG ; Te-Hsin CHAO ; Jen-Wei CHOU ; Yenn-Hwei CHOU ; Chiao-Hsiung CHUANG ; Wen-Hung HSU ; Tzu-Chi HSU ; Tien-Yu HUANG ; Tsung-I HUNG ; Puo-Hsien LE ; Chun-Che LIN ; Chun-Chi LIN ; Ching-Pin LIN ; Jen-Kou LIN ; Wei-Chen LIN ; Yen-Hsuan NI ; Ming-Jium SHIEH ; I-Lun SHIH ; Chia-Tung SHUN ; Tzung-Jiun TSAI ; Cheng-Yi WANG ; Meng-Tzu WENG ; Jau-Min WONG ; Deng-Chyang WU ; Shu-Chen WEI
Intestinal Research 2024;22(3):250-285
Crohn’s disease (CD) is a chronic, fluctuating inflammatory condition that primarily affects the gastrointestinal tract. Although the incidence of CD in Taiwan is lower than that in Western countries, the severity of CD presentation appears to be similar between Asia and the West. This observation indicates the urgency for devising revised guidelines tailored to the unique reimbursement system, and patient requirements in Taiwan. The core objectives of these updated guidelines include the updated treatment choices and the integration of the treat-to-target strategy into CD management, promoting the achievement of deep remission to mitigate complications and enhance the overall quality of life. Given the diversity in disease prevalence, severity, insurance policies, and access to medical treatments in Taiwan, a customized approach is imperative for formulating these guidelines. Such tailored strategies ensure that international standards are not only adapted but also optimized to local contexts. Since the inception of its initial guidelines in 2017, the Taiwan Society of Inflammatory Bowel Disease (TSIBD) has acknowledged the importance of continuous revisions for incorporating new therapeutic options and evolving disease management practices. The latest update leverages international standards and recent research findings focused on practical implementation within the Taiwanese healthcare system.
8.Innovative Nerve Root Protection in Full-Endoscopic Facet-Resecting Lumbar Interbody Fusion: Controlled Cage Glider Rotation Using the GUARD (Glider Used As a Rotary Device) Technique
Yu-Chia HSU ; Hao-Chun CHUANG ; Wei-Lun CHANG ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun-Sung KIM ; Cheng-Li LIN
Neurospine 2024;21(4):1141-1148
This video presents a case of L4–5 unstable spondylolisthesis treated with full-endoscopic transforaminal lumbar interbody fusion (Endo-TLIF), emphasizing the GUARD (Glider Used as a Rotary Device) technique for nerve root protection. This innovative approach involves controlled rotation of the cage glider before cage insertion to minimize the risk of nerve root injury, a significant complication in Endo-TLIF procedures. The GUARD technique, validated in previous cadaveric studies, provides enhanced safety during cage insertion by protecting the nerve root. A 48-year-old woman with a 3-year history of progressive low back pain and bilateral lower extremity radiculopathy (right-sided predominance) was diagnosed with L4–5 unstable spondylolisthesis and spinal stenosis. After failure of conservative management, she underwent uniportal full-endoscopic facet-resecting transforaminal lumbar interbody fusion using the GUARD technique. Postoperatively, the patient experienced significant symptomatic improvement and resolution of radiculopathy, without any intraoperative nerve root injury or postoperative neurological deficits. This case demonstrates the effectiveness of the GUARD technique in reducing neurological complications and improving patient outcomes.
9.Reducing Postoperative Neurological Complications in Uniportal Full-Endoscopic Lumbar Interbody Fusion: Efficacy of the GUARD Technique Combined With Delayed Ligamentum Flavectomy
Hao-Chun CHUANG ; Yu-Chia HSU ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun Sung KIM ; Cheng-Li LIN
Neurospine 2024;21(4):1199-1209
Objective:
Uniportal full-endoscopic transforaminal lumbar interbody fusion (FE-TLIF) carries a unique risk of nerve traction and abrasion injury during cage insertion. This study aims to evaluate the clinical efficacy of the GUARD technique and delayed ligamentum flavectomy in reducing postoperative radicular pain and neurapraxia in patients undergoing uniportal FE-TLIF.
Methods:
A retrospective analysis was conducted on 45 patients with an average age of 53.9±12.4 years who underwent either FE facet-sparing TLIF (FE fs-TLIF) or FE facet-resecting TLIF (FE fr-TLIF). Patients were divided into 2 groups: the sentinel group (21 patients) using traditional sentinel pin techniques, and the GUARD group (24 patients) using the GUARD technique with delayed ligamentum flavectomy. Patient-reported outcomes included the visual analogue scale (VAS) for leg and back pain, and Oswestry Disability Index. Complication rates, including incidental durotomy, postoperative neurapraxia, and hematoma, were also documented.
Results:
Postoperative radicular pain in the legs was significantly reduced at 6 weeks in the GUARD group compared to the sentinel group (VAS: 2.201 vs. 3.267, p=0.021). The incidence of postoperative neurapraxia was markedly lower in the GUARD group (0% vs. 19%, p=0.047). Both groups showed similar improvements in disc height, segmental lordosis, and lumbar lordosis at the 1-year follow-up, with no significant differences in endplate injury or fusion rates.
Conclusion
The GUARD technique and delayed ligamentum flavectomy significantly enhance patient safety by reducing postoperative radicular pain and neurapraxia without incurring additional costs. These techniques are easy to learn and integrate into existing surgical workflows, offering a valuable improvement for surgeons performing FE-TLIF procedures.
10.Innovative Nerve Root Protection in Full-Endoscopic Facet-Resecting Lumbar Interbody Fusion: Controlled Cage Glider Rotation Using the GUARD (Glider Used As a Rotary Device) Technique
Yu-Chia HSU ; Hao-Chun CHUANG ; Wei-Lun CHANG ; Yuan-Fu LIU ; Chao-Jui CHANG ; Yu-Meng HSIAO ; Yi-Hung HUANG ; Keng-Chang LIU ; Chien-Min CHEN ; Hyeun-Sung KIM ; Cheng-Li LIN
Neurospine 2024;21(4):1141-1148
This video presents a case of L4–5 unstable spondylolisthesis treated with full-endoscopic transforaminal lumbar interbody fusion (Endo-TLIF), emphasizing the GUARD (Glider Used as a Rotary Device) technique for nerve root protection. This innovative approach involves controlled rotation of the cage glider before cage insertion to minimize the risk of nerve root injury, a significant complication in Endo-TLIF procedures. The GUARD technique, validated in previous cadaveric studies, provides enhanced safety during cage insertion by protecting the nerve root. A 48-year-old woman with a 3-year history of progressive low back pain and bilateral lower extremity radiculopathy (right-sided predominance) was diagnosed with L4–5 unstable spondylolisthesis and spinal stenosis. After failure of conservative management, she underwent uniportal full-endoscopic facet-resecting transforaminal lumbar interbody fusion using the GUARD technique. Postoperatively, the patient experienced significant symptomatic improvement and resolution of radiculopathy, without any intraoperative nerve root injury or postoperative neurological deficits. This case demonstrates the effectiveness of the GUARD technique in reducing neurological complications and improving patient outcomes.

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