background: we performed this study to evaluate the efficacy of melatonin, clonidine and gabapentin in reducing preoperative anxiety and postoperative pain in patients undergoing laparoscopic cholecystectomy. methods: this study was a randomized clinical trial on patients scheduled for laparoscopic cholecystectomy. a total number of 88 patients were categorized into four groups to receive melat...

Surgical precision in oncologic surgery is essential to achieve adequate margins in bone tumor resections. Three-dimensional preoperative planning and bone tumor resection by navigation have been introduced to orthopedic oncology in recent years. However, the accuracy of preoperative planning and navigation is unclear. The purpose of this study was to evaluate the accuracy of preoperative plann...

The ability to effectively identify eloquent cortex in close proximity to brain tumours is a critical component of surgical planning prior to resection. The use of electrocortical stimulation testing (ECS) during awake neurosurgical procedures remains the gold standard for mapping functional areas, yet the preoperative use of non-invasive brain imaging techniques such as fMRI are gaining popula...

OBJECT The object of this study was to assess the effectiveness of preoperative planning in the restoration of balance and view angle in patients treated with lumbar osteotomy in ankylosing spondylitis (AS). METHODS The authors prospectively analyzed 8 patients with a thoracolumbar kyphotic deformity due to AS that was treated using a closing wedge osteotomy (CWO) of the lumbar spine to corre...

BACKGROUND To discuss the role of Liver 3D printing in the treatment of complex massive hepatocarcinoma with rare variations of portal vein. METHODS Data of enhanced computed tomography (CT) were imported into the medical image three-dimensional visualization system (MI-3DVS) to create Standard Template Library (STL) files, which were read by 3D printer to construct life-size 3D physical live...

The incidence of THA revision has increased substantially during the last decade and is projected to nearly double by 2026 [8, 9]. Aseptic loosening and osteolysis continue to be major challenges in hip reconstruction surgery; planning surgical treatments for these conditions requires accurate preoperative characterizations of the bone loss caused by these conditions, as preoperative planning i...

Endometriosis is a benign gynecologic disease characterized by the presence of endometrial tissue outside the uterine cavity. The complexity of the disease results from its multiple clinical presentations, the multifocal pattern of distribution of the lesions, the presence of extra pelvic sites of the disease (mainly affecting the urinary and the intestinal tracts), and the difficulty in the pr...

Acquiring and incorporating intraoperative data into image-guided surgical systems has been shown to increase the accuracy of these systems and the accuracy of image-guided surgical procedures. Even with the advent of powerful computers and parallel clusters, the ability to integrate highly resolved computer model information in the planning and execution of image-guided surgery is challenging....

The purpose of this study was to evaluate the diagnostic capability of imaging modalities used for preoperative mesenteric-left portal bypass ("Rex shunt") planning. Twenty patients with extrahepatic portal vein thrombosis underwent 57 preoperative planning abdominal imaging studies. Two readers retrospectively reviewed these studies for an ability to confidently determine left portal vein (PV)...

OBJECTIVES To show the preoperative planning and results from surgical treatment for paralytic hip dislocation among patients with cerebral palsy. The techniques used were proximal femoral varus derotation osteotomy in association with Dega iliac osteotomy, without opening the joint capsule. METHODS We performed a retrospective review of ten hips in eight patients with spastic quadriplegic ce...