View clinical trials related to Microsurgery.
Filter by:This study is a randomized clinical trials that aim to determine the effect of Indocyanine Green (ICG) titration dose on the intensity degree of ICG fluorescence imaging results. In addition, this study will also determine the relationship of other indicators such as flap surface temperature, transcutaneous pressure of carbon dioxide (TcPCO2), transcutaneous pressure of oxygen (TcPCO2), HIF - 1 alpha expression, and flap histopathology morphology to the intensity degree of ICG fluorescence imaging results with titrated doses.
The goal of this preclinical trial is to learn about the benefits and limitations of novel robotic devices for microsurgery, based on different levels of microsurgical experience. The main questions it aims to answer are: Is robot-assisted microsurgery faster, better and more ergonomic than conventional microsurgery in a preclinical standardized setting? Participants will perform microvascular anastomoses on 1.0-mm-diameter artificial silicone vessels using a conventional manual approach versus a novel robot-assisted approach. Researchers will compare the performance of novices, advanced participants and experts to evaluate the role of microsurgical experience when learning the new technique.
Based on the relative shortage of ophthalmic surgeons in China, the long micromanipulation cycle and the existing micromanipulation training methods have their own limitations, such as traditional operating in porcine eyes limited to synchronous guidance and evaluation, while surgical simulators are very different for the simulation of real tissues, and the price is expensive and easy to lose. Based on these, the development of a digital training system, that is, based on traditional micromanipulation platforms such as animal tissue, physical microscopic instruments supplemented by synchronous surgical guidance and evaluation, can combine the advantages of traditional training and simulator, so as to improve the efficiency of ophthalmic surgeon training, and also provide digital ideas for other disciplines based on traditionally surgical teaching.
Endovascular coiling has become a strategy of choice of intracranial aneurysms due to its minimally invasiveness. However, there has few prospective randomized controlled studies on the comparison of therapeutic effect between endovascular coiling and microsurgical clipping, especially the latter via keyhole approaches, which has been widely used in recent years. Based on the data of a single center, a randomized controlled study was conducted on patients with ruptured anterior circulation aneurysms suitable for both endovascular and extravascular treatment, including endovascular coiling, microsurgical clipping via conventional craniotomy and keyhole approaches, in order to compare the efficacy of the above strategies and provide more objective basis for treatment selection for operators.
A single group study will be carried out in the Microsurgery Laboratory, Neurosurgery Department, Hospital de Clínicas, and the Center for Microsurgical Skills of the Argentine Association of Neurosurgery. The objective of the study is to evaluate the effect of theoretical-practical course learning in neurosurgery and plastic surgery residents.
The purpose of this study was to compare the effectiveness of microsurgical and macrosurgical approaches on CPFs plus SCTGs for the treatment of localized gingival recession defects (Miller class I or II) over the course of 6 months based on clinical periodontal parameters, periodontal phenotypes, and the postoperative complaints and satisfaction levels of the patients. We hypothesized that root coverage achieved through microsurgery in Miller I or II gingival recessions would improve clinical periodontal outcomes and the periodontal phenotype, with greater postoperative comfort and aesthetic satisfaction in comparison with conventional macrosurgical techniques. Miller Class I and II gingival recession defects, at least 3.0 mm deep, were selected and randomly assigned to receive micro or macrosurgical techniques. Both techniques were performed using a coronally positioned flap with a subepithelial connective tissue graft. Plaque and gingival indices, gingival recession depth and width, probing pocket depth, bleeding on probing, clinical attachment level, width of keratinized gingiva, aesthetic score and percentage of root coverage, postoperative complaints, and satisfaction of the participants completing the study were evaluated at follow-up 1st, 3rd and 6th months.
This study reports the experience in free tissue transfer in the elderly population by a single surgeon in the private practice setting in Mexico city and the potential criticism that could arise from adverse events in lower-volume practice situations will be addressed. Investigator will answer the question about the age as the variable of interest in this series in which age was not a factor in deciding reconstructive methods, and examine complication rates.
A single-center, prospective, randomized, controlled intervention trial to validate an inexpensive practice model for acquisition of microsurgical skills. Following a pre-assessment microsurgical skills task, participants were randomized to either an intervention group to build a micro-stellated icosahedron, or to a control group with no specific task assigned. A post-assessment microsurgical skills task was given to all participants after two weeks. Videos of pre- and post-assessments were masked and independently rated by two ophthalmologists using Video-based Modified Objective Structure Assessment of Technical Skill (OSATS) scoring criteria. Analyses were done to determine improvement in time required to complete tasks and in scores between pre- and post- assessments.
Hypothesis:The conventional surgical approach is to raise large flaps to completely and exceedingly expose the area of interest. Since the results were unsatisfactory due to limited regenerated periodontal tissue, an alternative approach to access the intra-bony defects was proposed, this approach is called minimally invasive techniques which use incisions just large enough for debridement and generally involves reflecting the papilla only using specialized instruments to access the intra-bony defect and debridement. Aim of the study:Is to evaluate the gain in clinical attachment level and bone after treatment of the intra-bony defects by Minimally Invasive Surgical Technique when compared to Open Flap Debridement in patients with intra-bony defects. Study setting:Study will be conducted in the Oral Medicine and Periodontology department, Faculty of Oral and Dental Medicine - Cairo University, Egypt.Patients will be selected from the outpatient clinic of the department of Oral Medicine and Periodontology-Cairo University. Prior to the start of the study each patient will receive initial periodontal therapy consisting of proper oral hygiene instructions and full-mouth scaling and root planing. Six weeks after completion of the initial therapy, a re-evaluation will be performed to confirm that the patients meet all the inclusion criteria for the study. Evaluation of the patient's oral hygiene and a written consent will be obtained from the patients who will participate in the trial. Blinded periodontist will record the clinical measurements prior to surgery using a periodontal probe. Prior to surgery, a stent will be fabricated for each site using diagnostic casts and acrylic resin. Each stent will rest on the occlusal surfaces of at least 4 teeth and had a vertical notch marking the facial and lingual position of the intra-bony defect. A periapical radiograph using paralleling technique using extension cone paralleling (XCP) film holder will be performed for each patient to evaluate alveolar bone loss using DIGORA system. Surgical procedure:The patients will be randomly assigned into two groups; Group A (Control): Patients receiving Open Flap Debridement (OFD). Group B (Test): Patients receiving Minimally Invasive Surgical technique (MIST). The operator will anesthetize the surgical sites for both groups. For the OFD technique, buccal and lingual intrasulcular incisions will be done extending at least one tooth mesial and distal to the tooth associated with the intrabony defect. Full thickness mucoperiosteal flaps will be reflected to allow access for debridement of the defect. Surgical debridement will be carried out to remove subgingival plaque, calculus and granulation tissue. The surgical sites will be irrigated with sterile saline. Surgical flaps will be sutured to the pre-surgical level with 5-0 vicryl suture utilizing a vertical mattress suturing technique achieving primary closure. For the Minimally Invasive Surgical technique, it will be carried out with 2.5 X optical magnification dental loupes. After local anaesthesia, an envelope flap without vertical releasing incisions will be performed. The defect-associated interdental papilla will be accessed either with the simplified papilla preservation flap (SPPF) in narrow interdental spaces or the modified papilla preservation technique (MPPT) in large interdental spaces. In the SPPF, a diagonal incision traced as close as possible to the buccal side of the papilla col will be performed, whereas in the MPPT a horizontal incision traced on the buccal side of the papilla will be done. Intrasulcular incisions will be performed from the interdental side to the buccal and lingual sides of the teeth neighboring the defect; tiny buccal and lingual flaps will be elevated to expose the bone crest. All incisions will be done using microsurgical ophthalmic blades. Buccal and lingual flaps will be elevated using sharp dissection only. Granulation tissue adherent to the inner surface of flaps will be carefully removed with microscissors to provide full access and visibility to root surfaces. Defect debridement and root planing will be performed with a combination of mini-curettes. Then sutures will be placed using 6-0 vicryl suture. Postoperative medication:Administration of amoxicillin (500 mg tabs) T.I.D for 7 days), Chlorhexidine rinse (B.I.D for 14 days). Ibuprofen 600 mg tabs 1 every 8h in case of unbearable pain. Patient self-care instructions: Sutures will be removed 2 weeks post-surgically. Patients will be asked to abstain from mechanical oral hygiene procedures in the surgical area for 2 weeks. After this period, patients will be instructed to continue mechanical tooth brushing again of the treated sites using a soft toothbrush. The outcomes will be measured at 1 week, 3 and 6 months post-operatively.
By comparison of two different protocols with diverse fluid/ catecholamine administration limits (fluid restriction vs. catecholamine restriction with target systolic blood pressure > 100 mmHg) the investigators would like to reveal the impact of intraoperative blood pressure management on the survival rate of free deep inferior epigastric artery flaps for breast reconstruction.