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Preoperative planning

Pablo Antonio Ysunza, Kongkrit Chaiyasate, Matthew Rontal, Kenneth Shaheen, Blake Bartholomew
BACKGROUND: Velopharyngeal insufficiency (VPI) occurs when the velopharyngeal sphincter (VPS) is unable to completely seal anatomical closure between the nasal and oral cavities during speech. Palatal repair can restore VPS function but the prevalence of VPI after repair has been reported ranging from 20% to 40%. The combination of flexible videonasopharyngoscopy (FVNP) and multiplanar videofluoroscopy (MPVF) has been reported as the best approach for assessing the VPS mechanism and planning effective surgical procedures aimed to correct VPI...
February 11, 2019: International Journal of Pediatric Otorhinolaryngology
Andrey Bokov, Anatoliy Bulkin, Alexander Aleynik, Marina Kutlaeva, Sergey Mlyavykh
Study Design: Retrospective cohort study. Objective: To determine risk factors that may affect the rate of pedicle screws loosening in patients with degenerative diseases of the lumbar spine. Methods: A total of 250 patients with a low-grade spondylolisthesis and lumbar instability associated with degenerative diseases were enrolled. Preoperatively patients underwent computed tomography (CT) and cancellous bone radiodensity of a vertebral body was measured in Hounsfield units (HU)...
February 2019: Global Spine Journal
Jessica H Heyer, Amos Z Dai, Donald J Rose
An os trigonum is a potential source of posterior ankle pain in dancers, often associated with flexor hallucis longus (FHL) pathology. Surgical excision is indicated on failure of nonoperative management. Options for surgical excision include open excision (via a posterolateral or posteromedial approach), subtalar arthroscopy, and posterior endoscopy. Os trigonum excision via an open posteromedial approach with concomitant FHL tenolysis/tenosynovectomy is a safe and effective method for the operative treatment of a symptomatic os trigonum that allows for identification and treatment of associated FHL pathology...
December 26, 2018: JBJS Essential Surgical Techniques
Jiaxin Li, Kun Qian, Hong Wu, Yong Zeng
This case report describes the use of a three-dimensional reconstruction technique to plan the abdominal incision in order to avoid incision-related complications in a 53-year-old female patient who had had a cystic mass in the liver for 16 years and had undergone four previous surgeries. The patient presented with a recurrent cyst. The surgical team used three-dimensional reconstruction to model the liver mass, the area of abdominal wall weakness due to previous surgeries, bowel adhesions, skeletal structure and whole abdominal contour...
February 18, 2019: Journal of International Medical Research
M Z Li, X X Wang, Z L Li, B Yi, C Liang, W He
OBJECTIVE: To explore the application accuracy of virtual preoperative plan after the condylectomy via intraoral approach under computer assisted surgical navigation, and to analyze the location and cause of the surgical deviation to provide reference for the surgical procedure improvement in the future. METHODS: In the study, 23 cases with condylar hypertrophy (11 with condylar osteochondroma and 12 with condylar benign hypertrophy) in Department of Oral and Maxilloficial Surgery, Peking University School and Hospital of Atomatology from December 2012 to December 2016 were treated by condylectomy via intraoral approach under computer assisted surgical navigation...
February 18, 2019: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
R Yang, Q X Li, C Mao, X Peng, Y Wang, Y X Guo, C B Guo
OBJECTIVE: To explore the value of incorporated multimodal image fusion technology with computer-aided design of the skull base-infratemporal tumor treatment. METHODS: A retrospective study was carried out to enroll seventeen patients with skull base-infratemporal tumors treated at Peking University Hospital of Stomatology from February 2011 to September 2018. Plain CT, enhanced CT and MRI data were imported into the iPlan 3.0 software (BrainLab navigation system), and the image fusion was performed for each patient preoperatively...
February 18, 2019: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Jason M Sutherland, Shan Rajapakshe, Alastair Younger, Trafford Crump, Kevin Wing, Guiping Liu, Andrea Veljkovic
BACKGROUND: End-stage ankle arthritis is often debilitating, associated with diminished mobility, pain, and reduced health related quality of life. Direct hospital costs of AA and TAA differ, with hospital length of stay being a major contributor. The objective of this study is to test the association between four patient-reported outcome measures with hospital length of stay, potentially important for preoperative planning and care. METHODS: This study is based on a prospective cohort of patients scheduled for AA or TAA for end-stage ankle arthritis in the Vancouver Coastal Health authority, Canada...
February 2, 2019: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
H Ji, W Du, C Xu, Q Zhao, B Ye, E Luo
This study investigated the surgical outcomes and accuracy of computer-assisted osteotomy guides and pre-bent titanium plates in the treatment of patients with facial asymmetry. Thirteen patients with facial asymmetry undergoing bimaxillary orthognathic surgery were included. Virtual simulation of Le Fort I osteotomy, sagittal split ramus osteotomy, and genioplasty, if needed, was conducted on the preoperative three-dimensional model. Computer-assisted osteotomy guides and pre-bent titanium plates were produced and used in the actual operation...
February 14, 2019: International Journal of Oral and Maxillofacial Surgery
Amir Reza Vosoughi, Malwattage Lara Tania Jayatilaka, Benjamin Fischer, Andrew P Molloy, Lyndon W Mason
BACKGROUND: To date, there have been no studies describing the characteristics of posteromedial fragment in the posterior malleolus fracture. The aim was to investigate the variability of posteromedial fracture fragments to enable better surgical planning. METHODS: All Mason and Molloy type 2B fractures, defined as fracture of both the posterolateral and the posteromedial fragments of the posterior malleolus, from our database were identified to analyze the preoperative computed tomography scan...
February 17, 2019: Foot & Ankle International
Jennifer Li, Elizaveta Vasilyeva, Jake Hiebert, Heidi Britton, Blair Walker, Sam M Wiseman
BACKGROUND: This study's objective was to evaluate the utility of intraoperative frozen section (IFS) performed during parathyroidectomy for treatment of primary hyperparathyroidism (PHP), and to identify patients for whom it is most helpful. METHODS: A retrospective chart review was carried out for all patients who underwent parathyroidectomy for treatment of PHP between January 2013 and June 2018. RESULTS: 262 patients made up the final study population...
February 5, 2019: American Journal of Surgery
Sampath Chandra Prasad, Melissa Laus, Saeed Al-Ghamdi, Ashish Vashishth, Paolo Piazza, Mario Sanna
BACKGROUND: To review the Shamblin classification of carotid body paragangliomas (CBPs) and the role of intra-arterial stenting in their surgical management. METHODS: Retrospective case series of 20 patients with 28 CBPs that were surgically resected at our center. Intra-arterial stenting was performed in Shamblin II and II classes. RESULTS: The mean follow-up was 47.8 months. Five (17.9%) tumors were Shamblin class I, 15 (53.6%) were class II, and 8 (28...
February 16, 2019: Head & Neck
Volkan Tuncay, Peter M A van Ooijen
BACKGROUND: Current developments showed a fast-increasing implementation and use of three-dimensional (3D) printing in medical applications. Our aim was to review the literature regarding the application of 3D printing to cardiac valve disease. METHODS: A PubMed search for publications in English with the terms "3D printing" AND "cardiac valve", performed in January 2018, resulted in 64 items. After the analysis of the abstract and text, 27 remained related to the topic...
February 15, 2019: European radiology experimental
J Eschweiler, F Migliorini, H Siebers, M Tingart, B Rath
BACKGROUND: Providing the hip with an endoprosthesis is one of the most common orthopedic interventions in Germany. The long-term success of such a procedure depends on the consideration of the loads due to muscle and joint forces in the planning and operative care. Patient-specific information of forces acting in vivo is not available to the surgeon in clinical routine today. This is where biomechanical modeling comes in. PROCEDURES: A field of activity of biomechanical modeling is the development of methods and procedures for the precise analysis and simulation of endoprosthetic supplies...
February 15, 2019: Der Orthopäde
Philippe Debeer, Bart Berghs, Nicole Pouliart, Gert Van den Bogaert, Filip Verhaegen, Stefaan Nijs
BACKGROUND: The treatment of glenoid bone deficiencies in primary or revision total shoulder arthroplasty is challenging. This retrospective study evaluated the short-term clinical and radiologic results of a new custom-made patient-specific glenoid implant. METHODS: We treated 10 patients with severe glenoid deficiencies with the Glenius Glenoid Reconstruction System (Materialise NV, Leuven, Belgium). Outcome data included a patient-derived Constant-Murley score, a visual analog score (VAS), a satisfaction score, the 11-item version of the Disabilities of the Arm, Shoulder and Hand score, and the Simple Shoulder Test...
February 13, 2019: Journal of Shoulder and Elbow Surgery
Emily M Bachner, Elaine C Schmidt, Matthew Chin, Surena Namdari, Josh R Baxter, Michael W Hast
BACKGROUND: Locked plating of displaced proximal humeral fractures is common, but rates of subacromial impingement remain high. This study used a multidisciplinary approach to elucidate the relationships between common surgical parameters, anatomic variability, and the likelihood of plate impingement. METHODS: The experiment was completed in 3 phases. First, a controlled in vitro experiment was conducted to simulate impingement. Second, a dynamic in silico musculoskeletal model modeled changes to implant geometry, surgical techniques, and acromial anatomy, where a collision detection algorithm was used to simulate impingement...
February 13, 2019: Journal of Shoulder and Elbow Surgery
Suh Min Kim, In Mok Jung, Daehwan Kim, Jung Pyo Lee, Young Ho So
BACKGROUND: The aim of this study was to investigate the effect of preexisting calcification in the inflow artery on maturation and flow volume of an arteriovenous fistula (AVF). MATERIALS AND METHODS: Patients who underwent AVF creation for hemodialysis were prospectively recruited between March and November 2017. On preoperative duplex ultrasound, calcification in the arterial media within 5cm of the planned anastomosis area was assessed. Clinical maturation was defined as the successful use of the fistula for ≥75% of the dialysis sessions during a month within 6 months after surgery...
February 12, 2019: Annals of Vascular Surgery
Elie Motulsky, Fang Zheng, Yingying Shi, José M B Garcia, Giovanni Gregori, Philip J Rosenfeld
BACKGROUND AND OBJECTIVE: Swept-source optical coherence tomography (SS-OCT) imaging was performed on eyes with epiretinal membranes (ERMs), and the extent of the ERMs were compared between the 12 mm × 12 mm scans and the more routine 6 mm × 6 mm field of view (FOV). PATIENTS AND METHODS: Eyes containing ERMs were imaged using a 12 mm × 12 mm SS-OCT scan. En face images derived from vitreoretinal interface (VRI) slabs were reviewed to assess the full extent of the ERM...
February 1, 2019: Ophthalmic Surgery, Lasers & Imaging Retina
Aysun Yildiz Altun, İsmail Demirel, Esef Bolat, Sibel Özcan, Serdar Altun, Ahmet Aksu, Azize Beştaş
BACKGROUND: Postoperative nausea and vomiting (PONV) is one of the most common complications during the postoperative period. In the literature, there are many factors associated with PONV risk, but it is claimed that inflammation increases this risk. The neutrophil-to-lymphocyte ratio (NLR) is a cheap parameter to use in the diagnosis and follow-up of systemic inflammatory diseases. In this study, we aimed to investigate whether the preoperative NLR was a marker for PONV and to determine its relation with antiemetic use...
February 14, 2019: Aesthetic Plastic Surgery
Takenori Tomite, Hidetomo Saito, Hiroaki Kijima, Kimio Saito, Hiroshi Tazawa, Noriyuki Ishikawa, Naohisa Miyakoshi, Yoichi Shimada
Objective: Sagittal alignment of the tibia following total knee arthroplasty (TKA) can affect various factors, such as durability, range of motion, stability, and even kinematics. The aim of the present study was to investigate whether taking plain preoperative lateral leg X-ray images to plan the posterior tibial slope can give an insert placement with more accurate sagittal alignment. Methods: A total of 100 patients who underwent total TKA with posterior-stabilized prostheses...
January 2019: Journal of Orthopaedics
Julien Berhouet, Luc Favard, David Boas, Théo Voisin, Mohamed Slimane
INTRODUCTION: The aim of this study was to identify points on the scapula that can be used to predict the anatomy of the native premorbid glenoid. MATERIAL AND METHODS: Forty-three normal scapulas reconstructed in 3D and positioned in a common coordinate system were used. Twenty points distributed over the blade of the scapula (portion considered normal and used as a reference) and the glenoid (portion considered pathological and needing to be reconstructed) were captured manually...
February 11, 2019: Orthopaedics & Traumatology, Surgery & Research: OTSR
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