The Experts below are selected from a list of 501 Experts worldwide ranked by ideXlab platform
Tun Hing Lui - One of the best experts on this subject based on the ideXlab platform.
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Endoscopic Accessory navicular synchondrosis fusion
Arthroscopy techniques, 2016Co-Authors: Tun Hing LuiAbstract:The Accessory navicular bone is one of the most common Accessory ossicles of the foot. Fewer than 1% of Accessory navicular bones are symptomatic, and most of these are type II Accessory navicular bones. A separation of the synchondrosis is considered one of the main causes of pain. After an injury to the synchondrosis has resulted in a chondro-osseous disruption, the combined forces of tension and shear from the posterior tibial tendon and the foot aggravate the injury and prevent it from healing. Fusion of the synchondrosis is a logical surgical treatment option if the pain is recalcitrant to conservative measures. The purpose of this technical note is to report an Endoscopic approach to achieve fusion. It has the advantages of better cosmesis, less scar pain, less risk of nonunion, and potential to examine the tibialis posterior tendon and the talonavicular joint.
Jin H Shen - One of the best experts on this subject based on the ideXlab platform.
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optic nerve sheath fenestration with Endoscopic Accessory instruments versus the free electron laser fel
Lasers in Surgery and Medicine, 2006Co-Authors: Karen M Joos, Rohan J Shah, R D Robinson, Jin H ShenAbstract:Background and Objective The free electron laser (FEL) can efficiently produce an optic nerve sheath fenestration using an Endoscopic approach. To develop a surgical protocol, this study compared effectiveness of available Accessory Endoscopic instruments to Endoscopic FEL delivery effectiveness in producing optic nerve sheath fenestrations. Study Design/Materials and Methods An endoscope was used to perform optic nerve sheath fenestrations on goat optic nerves. Accessory Endoscopic instruments and glass-hollow waveguides (250 and 320 µm in diameter) were inserted into the instrument channel for comparison. FEL energy (6.45 µm, 30 Hz) was delivered to the tissue through the waveguides and histological analysis was performed. Results The Endoscopic instruments alone were unable to incise the optic nerve sheath. The FEL successfully incised the sheath and the biopsy forceps extricated the circular flap. Conclusions Endoscopic optic nerve sheath fenestration using FEL energy followed by biopsy forceps for sheath extrication produced good results, thereby creating a feasible protocol for optic nerve sheath fenestration. Lasers Surg. Med. 38:846–851, 2006. © 2006 Wiley-Liss, Inc.
Brian P Saunders - One of the best experts on this subject based on the ideXlab platform.
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a new Accessory Endoscopic cuff improves colonoscopic access for complex polyp resection and scar assessment in the sigmoid colon with video
Gastrointestinal Endoscopy, 2012Co-Authors: Zacharias P Tsiamoulos, Brian P SaundersAbstract:Background Difficult and unstable Endoscopic access to large sessile/flat colon polyps in the sigmoid colon may prevent successful and complete EMR. Objective We report our experience with the use of an Endoscopic cuff, a new Endoscopic Accessory, to improve Endoscopic access during Endoscopic therapy and scar assessment. Design Single-center, retrospective, feasibility case series. Setting Tertiary referral academic endoscopy unit. Patients Nonconsecutive patients referred for Endoscopic resection of large flat/sessile sigmoid colon polyps or surveillance of postpolypectomy scars in the sigmoid colon. Interventions When conventional methods to achieve stable access and visualization were unsuccessful, the Endoscopic cuff was used to retract sigmoid colon folds. Main Outcome Measurements Safety, procedural success, and complications. Results Five patients (mean age 62 years, 3 male/2 female) underwent Endoscopic cuff–assisted EMR polypectomy, and 7 patients (mean age 62 years, 2 male/5 female) underwent post-EMR scar surveillance with an Endoscopic cuff–assisted flexible sigmoidoscopy. All sessile/flat polyps (mean size 29 mm) or post-EMR scar sites (mean size 15 mm) were located at acute bends in the sigmoid colon. With the Endoscopic cuff placed around the tip of the colonoscope, Endoscopic access improved significantly by flattening/depressing colon folds close to the lesion/scar. The entire polyp/scar surface was revealed, facilitating a complete polyp excision and a meticulous scar assessment. No immediate or delayed adverse events were seen. Limitations Single-center, nonrandomized case series. Conclusions An Endoscopic cuff appears to be a safe and easily used Accessory to facilitate colonoscopic access for complex polypectomy and scar assessment in the sigmoid colon.
Karen M Joos - One of the best experts on this subject based on the ideXlab platform.
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optic nerve sheath fenestration with Endoscopic Accessory instruments versus the free electron laser fel
Lasers in Surgery and Medicine, 2006Co-Authors: Karen M Joos, Rohan J Shah, R D Robinson, Jin H ShenAbstract:Background and Objective The free electron laser (FEL) can efficiently produce an optic nerve sheath fenestration using an Endoscopic approach. To develop a surgical protocol, this study compared effectiveness of available Accessory Endoscopic instruments to Endoscopic FEL delivery effectiveness in producing optic nerve sheath fenestrations. Study Design/Materials and Methods An endoscope was used to perform optic nerve sheath fenestrations on goat optic nerves. Accessory Endoscopic instruments and glass-hollow waveguides (250 and 320 µm in diameter) were inserted into the instrument channel for comparison. FEL energy (6.45 µm, 30 Hz) was delivered to the tissue through the waveguides and histological analysis was performed. Results The Endoscopic instruments alone were unable to incise the optic nerve sheath. The FEL successfully incised the sheath and the biopsy forceps extricated the circular flap. Conclusions Endoscopic optic nerve sheath fenestration using FEL energy followed by biopsy forceps for sheath extrication produced good results, thereby creating a feasible protocol for optic nerve sheath fenestration. Lasers Surg. Med. 38:846–851, 2006. © 2006 Wiley-Liss, Inc.
Zacharias P Tsiamoulos - One of the best experts on this subject based on the ideXlab platform.
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a new Accessory Endoscopic cuff improves colonoscopic access for complex polyp resection and scar assessment in the sigmoid colon with video
Gastrointestinal Endoscopy, 2012Co-Authors: Zacharias P Tsiamoulos, Brian P SaundersAbstract:Background Difficult and unstable Endoscopic access to large sessile/flat colon polyps in the sigmoid colon may prevent successful and complete EMR. Objective We report our experience with the use of an Endoscopic cuff, a new Endoscopic Accessory, to improve Endoscopic access during Endoscopic therapy and scar assessment. Design Single-center, retrospective, feasibility case series. Setting Tertiary referral academic endoscopy unit. Patients Nonconsecutive patients referred for Endoscopic resection of large flat/sessile sigmoid colon polyps or surveillance of postpolypectomy scars in the sigmoid colon. Interventions When conventional methods to achieve stable access and visualization were unsuccessful, the Endoscopic cuff was used to retract sigmoid colon folds. Main Outcome Measurements Safety, procedural success, and complications. Results Five patients (mean age 62 years, 3 male/2 female) underwent Endoscopic cuff–assisted EMR polypectomy, and 7 patients (mean age 62 years, 2 male/5 female) underwent post-EMR scar surveillance with an Endoscopic cuff–assisted flexible sigmoidoscopy. All sessile/flat polyps (mean size 29 mm) or post-EMR scar sites (mean size 15 mm) were located at acute bends in the sigmoid colon. With the Endoscopic cuff placed around the tip of the colonoscope, Endoscopic access improved significantly by flattening/depressing colon folds close to the lesion/scar. The entire polyp/scar surface was revealed, facilitating a complete polyp excision and a meticulous scar assessment. No immediate or delayed adverse events were seen. Limitations Single-center, nonrandomized case series. Conclusions An Endoscopic cuff appears to be a safe and easily used Accessory to facilitate colonoscopic access for complex polypectomy and scar assessment in the sigmoid colon.