scholarly journals Dynamic navigation and technical improvements in zygomatic surgery

2021 ◽  
Vol 10 (2) ◽  
pp. 148-54
Author(s):  
Fernando Manuel Pinto Duarte ◽  
Patrícia Carina da Silva Assunção Ramos ◽  
João Paulo Neves da Silva ◽  
Luís Miguel de Lemos Pinheiro ◽  
Simão Pedro Pereira da Silva
Keyword(s):  
Bone Grafting ◽  
The Body ◽  
Major Surgery ◽  
Scientific Article ◽  
Functional Rehabilitation ◽  
Receptor Sites ◽  
Short Implants ◽  
Zygomatic Implants ◽  
Dynamic Navigation ◽  
Augmentation Techniques

The rehabilitation of the severely atrophied edentulous maxilla poses a great challenge to surgeons and prosthodontics that work on this particular area. The classic approach implies bone augmentation techniques by means of bone grafting, bone distraction techniques, tilted and short implants. All of these require major surgery, sometimes associated with morbidity at donor and receptor sites and functional rehabilitation of the patient must occur in two surgical stages. Since the development of the zygomatic implants by Per-Ingvar Branemark, there’s an alternative to bone grafting techniques, using the body of the zygomatic bone as major point of anchorage to an intraoral osteointegrated implant. This procedure allows the patient to regain orofacial function in only one surgical stage, with high predictability, less morbidity, time spend and costs. In this scientific article the authors present a set of technical improvements in the zygomatic implant (S.I.N. - Implant System, São Paulo, Brazil) in combination with a new dynamic navigation system called StealthStation™ (Medtronic, Dublin, Irland) used for the first time in this type of surgery.

Rehabilitation of a Patient with Cleft Lip and Palate with an Extremely Edentulous Atrophied Posterior Maxilla Using Zygomatic Implants: Case Report

2004 ◽  
Vol 41 (5) ◽  
pp. 571-574 ◽  
Author(s):  
Anh Viet Pham ◽  
Marcelo Abarca ◽  
Albert De Mey ◽  
Chantal Malevez
Keyword(s):  
Case Report ◽  
Bone Grafting ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Oral Implants ◽  
Alveolar Cleft ◽  
Dental Prostheses ◽  
Posterior Maxilla ◽  
Zygomatic Implants ◽  
Dental Rehabilitation

Objective This case report describes the clinical and surgical management of a patient with a unilateral alveolar cleft and associated extremely atrophied totally edentulous maxilla. Method Two zygomatic implants and four endosseous oral implants were placed under general anesthesia in a compromised maxilla to rehabilitate a 33-year-old patient with cleft lip and palate. The two specially designed zygomatic implants were utilized to avoid the need for bone grafting in the patient. The final prosthetic rehabilitation was an esthetic and functional maxillary overdenture prosthesis supported by implants. Results Preliminary results have shown how dental prostheses supported by endosseous implants in grafted alveolar cleft are a reliable possibility in the dental rehabilitation of this malformation. Conclusion The use of zygomatic implants may be considered a reliable alternative to more resource-demanding techniques such as bone grafting in patients with cleft palate.

Biocompatible Cardiac Sensor with Continuous Arrhythmia Monitoring for Human Wellness

2016 ◽  
Vol 835 ◽  
pp. 71-77
Author(s):  
Jong Ha Lee
Keyword(s):  
Atrial Fibrillation ◽  
Power Transmission ◽  
Sampling Rate ◽  
Animal Experiments ◽  
Small Animal ◽  
The Body ◽  
Major Surgery ◽  
Data Sampling ◽  
Integrated Sensor ◽  
Sensor Module

Prolonged monitoring is more likely to result in an accurate diagnosis of atrial fibrillation patients than intermittent or short-term monitoring. In this study, we present an implantable ECG sensor to monitor atrial fibrillation patients in real time. The developed implantable sensor is composed of a micro controller unit, analog to digital converter, signal transmitter, antenna, and two electrodes. The sensor detects ECG signals from the two electrodes and transmits these signals to the external receiver that is carried by the patient. The sensor continuously transmits signals, so its battery consumption rate is extremely high. To overcome this problem, we consider using a wireless power transmission module in the sensor module. This module helps the sensor charge power wirelessly without holding the battery in the body. The size of the integrated sensor is approximately 0.12 inch x 1.18 inch x 0.19 inch. This sensor size is appropriate enough for cardiologists to insert the sensor into patients without the need for a major surgery. The data sampling rate was 300 samples/sec, and the frequency was 430 Hz for signal and power transmission. To verify the validation of the developed sensor, the small animal experiments were conducted.

scholarly journals Arthroscopic-assisted reduction, bone grafting and screw fixation across the scapholunate joint for proximal pole scaphoid nonunion

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Jung-Pan Wang ◽  
Hui-Kuang Huang ◽  
Jui-Tien Shih
Keyword(s):  
Fracture Healing ◽  
Grip Strength ◽  
Bone Grafting ◽  
Screw Fixation ◽  
Healing Time ◽  
The Body ◽  
Dash Score ◽  
Scaphoid Nonunion ◽  
Wrist Flexion ◽  
Radiographic Outcomes

Abstract Background There are some difficulties in treating proximal scaphoid nonunion, mainly including poor vascularity of the proximal scaphoid fragment and limited space for a stable fixation in the proximal scaphoid fragment. This study reports the outcomes of treating proximal scaphoid nonunion with arthroscopic assist for reduction, bone grafting and screw fixation across the scapholunate (SL) joint. Methods Between 2008 and 2017, 21 patients were enrolled. Fracture healing and change in the lateral SL angle and SL gap were evaluated. Functional outcomes were evaluated using the Disabilities of the Arm, Shoulder, and Hand (DASH) score, wrist range of motion, grip strength, and the Visual Analog Scale (VAS) for pain. Results Nineteen patients achieved fracture healing and their mean follow-up duration was 31.3 months (24–120 months). The average fracture healing time was 16.3 weeks (10 to 28 weeks). From the preoperative to the postoperative final evaluation, there was some significant improvement in wrist function, including wrist flexion from 54.5o to 67.4o, wrist extension from 62.3o to 71.7o, DASH scores from 52.4 to 21.4, VAS during activity from 4.6 to 2.1, and grip strength from 9.6 kg to 24.7 kg. The lateral SL angle also improved significantly, from 82o to 66o. Seventeen patients requested screw removal after fracture healing because of their cultural belief in not leaving hardware in the body. No significant SL gap widening was noted after screw removal in the sequential follow-ups. Conclusions Using arthroscopic-assisted reduction, bone grafting and screw fixation across the SL joint in proximal scaphoid nonunion treatment, satisfactory functional and radiographic outcomes can be achieved.

Assessment of body composition measure of bioelectrical impedance in patients operated for pancreatic, gastric and colorectal cancer

2020 ◽  
Vol 92 (1) ◽  
pp. 1-5
Author(s):  
Przemysław Dzierżek ◽  
Krzysztof Kurnol ◽  
Wojciech Hap ◽  
Ewelina Frejlich ◽  
Agata Diakun ◽  
...  
Keyword(s):  
Weight Loss ◽  
Body Composition ◽  
Body Weight ◽  
Bioelectrical Impedance ◽  
The Body ◽  
Intracellular Water ◽  
University Hospital ◽  
Major Surgery ◽  
Average Weight ◽  
Neoplastic Disease

Introduction An adequate level of nutrition is important in the period of reconvalescence in patients undergoing major surgery, in particular due to neoplastic disease. Bioelectrical impedance (BIA - Bioelectrical Impedance Analysis) is a widely used technique for assessing body composition. BIA measurement is easy, fast, cheap and repeatable. Material and methods The body composition of 56 patients (25 women and 31 men) was assessed with bioelectrical impedance analysys. All patients was hospitalized and operated in the Department of General and Oncological Surgery, Wrocław Clinical University Hospital in 2017-2018. Results The average weight loss on the 4th postoperative day is 1.32%, and at discharge from hospital 4.23% of body weight in relation to body weight at admission to the ward. The percentage of fat tissue (FM-Fatt Mass) in patients admitted to the ward is above the normal range. The change in body weight composition in hospitalized patients is mainly related to the amount of adipose tissue and the amount of extra- and intracellular water (ECW-Extracellular Water, ICW-Intracellular Water). Conclusions Bioelectrical impedance can be an easy and effective method to assess body composition and its change in patients undergoing major surgery. Patients operated on due to pancreatic cancer lose the highest percentage of body weight until discharge from the ward in relation to body weight at the time of admission to the ward from the analyzed groups. Weight loss mainly occurs as fat loss (FM).

Evaluation of Thrombotic Events in Haemophiliacs Undergoing Major Orthopaedic Surgery without Thrombosis Prophylaxis.

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 4072-4072
Author(s):  
Manuela Krause ◽  
Charis von Auer ◽  
Andreas Kurth ◽  
Martina Boehm ◽  
L. Hovy ◽  
...  
Keyword(s):  
Risk Factors ◽  
Knee Replacement ◽  
Postoperative Period ◽  
The Body ◽  
Treatment Center ◽  
Major Surgery ◽  
Thrombosis Prophylaxis ◽  
Compression Stockings ◽  
Surgical Interventions ◽  
Apc Resistance

Abstract Introduction:Major orthopaedic procedures and the presence of thrombophilia are risk factors of thrombotic events. In patients with haemophilia undergoing hip or knee replacement the importance of thrombosis prophylaxis with heparin in the postoperative period is still unknown. The aim of the present study was to evaluate the occurence of thrombotic events in haemophiliacs undergoing major surgery without thrombosis prophylaxis. Patients: A total of 32 pts with haemophilia A (severe:27 pts, moderate:4 pts, mild:1pt; median age:47yrs, range:27–73yrs) undergoing hip (n=9)or knee (n=35) replacement were analysed in our haemophilia treatment center. Pts with inhibitors were excluded. Surgical interventions were performed using recombinant (n=37) or plasma-derived (n=7) FVIII for 12 to 15 postoperative days. The median initial dose of FVIII was 82 IU/Kg−1, followed by median FVIII doses of 54 IU/kg−1over the first four days. All pts received thrombosis prophylaxis with graduated compression stockings only. In addition to factor VIII activity, APC resistance, FV G1691A mutation and the FII G20210A variant (FII) were investigated. Results: No thrombotic events in the postoperative period was dokumented. The median FVIII activity was 153% (range:85–347%), the Body mass index (BMI:kg/m2) was 23.1(range:18.2–30.5). During the first four postoperative days FVIII levels >150% were measured in 24/44 (55%) operative procedures. BMI>25 were shown in 12/32 (38%) pts, and age >40yrs was documented in 23/32 (72%) pts. In 1/30 (3%) pt APC resistance and none of our pts FII were identified. Conclusion: In our study group elevated FVIII levels and additional risk factors (BMI>25, age>40years) seems not to influence relevantly the occurrence of thrombotic events in pts with haemophilia undergoing hip or knee replacement without thrombosis prophylaxis. Further studies are required to confirm whether a thrombosis prophylaxis with heparin is needed in haemophiliacs undergoing high risk surgery.

scholarly journals Simplifying the Treatment of Bone Atrophy in the Posterior Regions: Combination of Zygomatic and Wide-Short Implants—A Case Report with 2 Years of Follow-Up

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Fernanda Faot ◽  
Geninho Thomé ◽  
Amália Machado Bielemann ◽  
Caio Hermann ◽  
Ana Cláudia Moreira Melo ◽  
...  
Keyword(s):  
Case Report ◽  
Large Diameter ◽  
Immediate Loading ◽  
Oral Rehabilitation ◽  
Short Implants ◽  
Atrophic Maxilla ◽  
Zygomatic Implants ◽  
Bone Atrophy ◽  
The Face ◽  
Maxilla And Mandible

The rehabilitation of maxillary and mandibular bone atrophy represents one of the main challenges of modern oral implantology because it requires a variety of procedures, which not only differ technically, but also differ in their results. In the face of limitations such as deficiencies in the height and thickness of the alveolar structure, prosthetic rehabilitation has sought to avoid large bone reconstruction through bone grafting; this clinical behavior has become a treatment system based on evidence from clinical scientific research. In the treatment of atrophic maxilla, the use of zygomatic implants has been safely applied as a result of extreme technical rigor and mastery of this surgical skill. For cases of posterior mandibular atrophy, short implants with a large diameter and a combination of short and long implants have been recommended to improve biomechanical resistance. These surgical alternatives have demonstrated a success rate similar to that of oral rehabilitation with the placing of conventional implants, allowing the adoption of immediate loading protocol, a decrease in morbidity, simplification and speed of the treatment, and cost reduction. This case report presents complete oral rehabilitation in a patient with bilateral bone atrophy in the posterior regions of the maxilla and mandible with the goal of developing and increasing posterior occlusal stability during immediate loading.

scholarly journals Modern treatment of meniscal tears

2018 ◽  
Vol 3 (5) ◽  
pp. 260-268 ◽  
Author(s):  
Mahmut Nedim Doral ◽  
Onur Bilge ◽  
Gazi Huri ◽  
Egemen Turhan ◽  
René Verdonk
Keyword(s):  
Sports Medicine ◽  
Meniscal Repair ◽  
Clinical Information ◽  
The Body ◽  
Meniscal Tears ◽  
Treatment Methods ◽  
Vital Functions ◽  
Augmentation Techniques ◽  
Tear Pattern ◽  
Modern Treatment

The complex ultrastructure of the meniscus determines its vital functions for the knee, the lower extremity, and the body. The most recent concise, reliable, and valid classification system for meniscal tears is the International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine (ISAKOS) Classification, which takes into account the subsequent parameters: tear depth, tear pattern, tear length, tear location/rim width, radial location, location according to the popliteal hiatus, and quality of the meniscal tissue. It is the orthopaedic surgeon’s responsibility to combine clinical information, radiological images, and clinical experience in an effort to individualize management of meniscal tears, taking into account factors related to the patient and lesion. Surgeons should strive not to operate in most cases, but to protect, repair or reconstruct, in order to prevent early development of osteoarthritis by restoring the native structure, function, and biomechanics of the meniscus. Currently, there are three main methods of modern surgical management of meniscus tears: arthroscopic partial meniscectomy; meniscal repair with or without augmentation techniques; and meniscal reconstruction. Meniscus surgery has come a long way from the old slogan, “If it is torn, take it out!” to the currently accepted slogan, “Save the meniscus!” which has guided evolving modern treatment methods for meniscal tears. This last slogan will probably constitute the basis for newer alternative biological treatment methods in the future.Cite this article: EFORT Open Rev 2018;3 DOI: 10.1302/2058-5241.3.170067.

Uterine artery embolization

2002 ◽  
Vol 10 (3) ◽  
pp. 177-186
Author(s):  
JF Reidy
Keyword(s):  
Uterine Artery Embolization ◽  
Arteriovenous Malformations ◽  
Uterine Artery ◽  
The Body ◽  
Major Surgery ◽  
Severe Bleeding ◽  
Artery Embolization ◽  
Main Indication ◽  
The Third ◽  
Important Indication

Percutaneous trans-catheter embolization has been practised by radiologists for well over 20 years. In many different clinical situations a great variety of embolization materials or agents has been used in all parts of the body, but generally these procedures have been performed rarely. An important indication is severe bleeding not responding to conservative measures, where the alternative treatment would involve major surgery. Embolization has also been used in tumours, particularly where they are hypervascular, when the role has often been to debulk and devascularize immediately prior to surgery. The third main indication is in arteriovenous malformations and fistulae. Thus, it is somewhat surprising that it was not until 1995 that uterine artery embolization (UAE) was first advocated as a treatment for uterine fibroid disease.

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