keyword
MENU ▼
Read by QxMD icon Read
search

fiber optics in orthopedics

keyword
https://www.readbyqxmd.com/read/26065225/-the-evolution-of-surgical-arthroscopy-in-israel-and-worldwide
#1
Barak Haviv, Shlomo Bronak, Rafael Thein
Arthroscopy is a minimal invasive surgical technique to treat joint disorders with the use of fiber optics for indirect vision and small surgical tools. The first endoscopic direct inspection of the knee joint was documented at the beginning of the 20th century; however, the clinical practice of arthroscopy started only fifty years later. The "historical fathers" of surgical arthroscopy were Kenji Takagi from Japan and Eugen Bircher from Switzerland. The arthroscopes had become safer and more dependable since the 1970's with the introduction of fiber optics, while vision became easier with the invention of television...
April 2015: Harefuah
https://www.readbyqxmd.com/read/25607412/thermographic-and-microscopic-evaluation-of-lars-knee-ligament-tearing
#2
Jenel Marian Pătraşcu, Mihaela Amarandei, Karla Noemy Kun, Ovidiu Borugă, Alina Totorean, Bogdan Andor, Sorin Florescu
Damage to knee articular ligaments causes important functional problems and adversely affects particularly the stability of the knee joint. Several methods were developed in order to repair damage to the anterior cruciate ligament (ACL), which employ autografts, allografts, as well as synthetic ligaments. One such synthetic scaffold, the ligament advanced reinforcement system (LARS) synthetic ligament is made of non-absorbing polyethylene terephthalate fibers whose structure allow tissue ingrowths in the intra-articular part, improving the stability of the joint...
2014: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/24140394/physico-chemical-characterization-and-the-in-vitro-genotoxicity-of-medical-implants-metal-alloy-tialv-and-cocrmo-and-polyethylene-particles-in-human-lymphocytes
#3
Goran Gajski, Zelimir Jelčić, Višnja Oreščanin, Marko Gerić, Robert Kollar, Vera Garaj-Vrhovac
BACKGROUND: The main objective of the present study was to investigate chemical composition and possible cyto/genotoxic potential of several medical implant materials commonly used in total hip joint replacement. METHODS: Medical implant metal alloy (Ti6Al4V and CoCrMo) and high density polyethylene particles were analyzed by energy dispersive X-ray spectrometry while toxicological characterization was done on human lymphocytes using multi-biomarker approach. RESULTS: Energy dispersive X-ray spectrometry showed that none of the elements identified deviate from the chemical composition defined by appropriate ISO standard...
January 2014: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/24018912/imaging-monitored-loosening-of-dense-fibrous-tissues-using-high-intensity-pulsed-ultrasound
#4
Chia-Lun Yeh, Pai-Chi Li, Wen-Pin Shih, Pei-Shin Huang, Po-Ling Kuo
Pulsed high-intensity focused ultrasound (HIFU) is proposed as a new alternative treatment for contracture of dense fibrous tissue. It is hypothesized that the pulsed-HIFU can release the contracted tissues by attenuating tensile stiffness along the fiber axis, and that the stiffness reduction can be quantitatively monitored by change of B-mode images. Fresh porcine tendons and ligaments were adapted to an ex vivo model and insonated with pulsed-HIFU for durations ranging from 5 to 30 min. The pulse length was 91 µs with a repetition frequency of 500 Hz, and the peak rarefactional pressure was 6...
October 7, 2013: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/23112693/force-monitoring-in-a-maxilla-model-and-dentition-using-optical-fiber-bragg-gratings
#5
Maura Scandelari Milczewski, Jean Carlos Cardozo da Silva, Cicero Martelli, Leandro Grabarski, Ilda Abe, Hypolito José Kalinowski
The aim of this work is to show the possibility of using fiber optic sensors to instrument inside parts of an artificial maxilla and measure internal tension transmitted by the orthodontic and orthopedic appliances to the dentition and the adjacent bone. Bragg gratings written in a standard optical fiber were used to monitor the maxillary teeth and a multiplexed fiber was used to monitor the surface of the maxillary bone, transversally to the longest axis of the teeth. A Universal Test Machine was used to evaluate the sensitivity of the sensor to the vertical and lateral forces applied on the teeth...
2012: Sensors
https://www.readbyqxmd.com/read/22334269/cervical-spine-radiographs-in-patients-with-rheumatoid-arthritis-undergoing-anesthesia
#6
Maria A Lopez-Olivo, Tayab R Andrabi, Shana L Palla, Maria E Suarez-Almazor
BACKGROUND: There is no consensus on the role of preoperative cervical spine radiographs to screen for instability in patients with rheumatoid arthritis (RA). OBJECTIVES: This study aimed to evaluate the preoperative use of cervical spine radiographs in patients with RA undergoing preoperative anesthesia assessment and to determine whether preoperative radiographic findings influenced anesthesia delivery techniques. METHODS: We reviewed all medical records of RA patients who underwent surgical procedures requiring general anesthesia with airway intubation or monitored anesthesia care without airway intubation...
March 2012: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/21850167/c-194-a-c-q65p-mutation-in-the-lmx1b-gene-in-patients-with-nail-patella-syndrome-associated-with-glaucoma
#7
Pablo Romero, Felipe Sanhueza, Pamela Lopez, Loreto Reyes, Luisa Herrera
PURPOSE: To report the clinical, ophthalmic, extraophthalmic, and genetic characteristics of nail-patella syndrome (NPS) in a Chilean family and to investigate the expressivity of open angle glaucoma (OAG) and ocular hypertension (OHT) in the family members. METHODS: Five family members affected with NPS and two unaffected members underwent a complete ophthalmologic examination, including computerized visual field, optical coherence tomography (OCT) of the optic disc and ultrasound pachymetry...
2011: Molecular Vision
https://www.readbyqxmd.com/read/20420136/-tracheal-intubation-with-pentax-aws-airway-scope-after-failed-fiberoptic-intubation-and-failed-insertion-of-the-intubating-laryngeal-mask-airway
#8
Takashi Asai, Isao Ito, Yoshito Kuremoto, Akira Kawashima
Fiberoptic intubation is the most reliable method in patients with difficult airways, but it may be difficult in patients with restricted neck movement. The intubating laryngeal mask airway facilitates fiberoptic intubation, but its insertion may also be difficult in some circumstances. We experienced a case of successful tracheal intubation using the Pentax-AWS (Airway Scope) after failed fiberoptic intubation and failed insertion of the intubating laryngeal mask. A 74-year-old man who had undergone fixation of the cervical spine required reoperation...
April 2010: Masui. the Japanese Journal of Anesthesiology
https://www.readbyqxmd.com/read/20379695/-unexpected-expectable-difficult-airway-every-anesthesia-is-different
#9
A Schneider, B Grosse-Ophoff, B W Böttiger
The case of a female patient is reported where difficulty in securing the airway occurred during a reconstructive intervention following partial mandibular resection. During previous surgery the last of which was 2 months prior to this, endotracheal intubation was carried out with the GlideScope videolaryngoscope, but now the vocal chords could not be viewed with the GlideScope. Attempts at fiber optic intubation under general anesthesia were also unsuccessful. A "cannot ventilate, cannot intubate" situation ensued and an emergency tracheotomy was carried out...
May 2010: Der Anaesthesist
https://www.readbyqxmd.com/read/20203551/anesthetic-management-of-an-adult-patient-with-cornelia-de-lange-syndrome
#10
M D Torres, E Calvo, F Fernández Esplá, F Gilsanz
Cornelia de Lange Syndrome is a well-known congenital disease characterized by multiple malformations that make anesthetic management a challenge. Since few individuals survive the earliest stage of life, papers describing the details of anesthetic management are mainly reported in the pediatric population. These individuals who move into adulthood develop physical changes that should be taken into consideration. This article reports the case of a 34-year-old patient undergoing an orthopedic procedure. The operation was performed under general anesthesia because the patient showed severe scoliosis and joint contractures, so extraordinary difficulty in neuroaxial and peripheral techniques was expected...
March 2010: Minerva Anestesiologica
https://www.readbyqxmd.com/read/20139861/anesthetic-management-of-an-adult-patient-with-cornelia-de-lange-syndrome
#11
M D Torres, E Calvo, F Fernández Esplá, F Gilsanz
Cornelia de Lange Syndrome is a well-known congenital disease characterized by multiple malformations that make anesthetic management a challenge. Since few individuals survive the earliest stage of life, papers describing the details of anesthetic management are mainly reported in the pediatric population. These individuals who move into adulthood develop physical changes that should be taken into consideration. This article reports the case of a 34-year-old patient undergoing an orthopedic procedure. The operation was performed under general anesthesia because the patient showed severe scoliosis and joint contractures, so extraordinary difficulty in neuroaxial and peripheral techniques was expected...
February 5, 2010: Minerva Anestesiologica
https://www.readbyqxmd.com/read/19563713/-treatment-of-ureteral-obstruction-by-holmium-yag-laser-endoureterotomy-a-report-of-18-cases
#12
Yi-ming Fu, Shao-bin Ni, Qi-yin Chen, Zhong-shan Zhao, Ming-hua Ren, Li Ma, Zhi-xing Jiao
OBJECTIVE: To investigate the clinical value and safety of holmium: YAG laser endoureterotomy in the treatment of ureteral obstruction. METHODS: Holmium: YAG laser endoureterotomy, with the laser optic fiber 550 microm in diameter and the output power of 3.5 Watt, via ureteroscopy, was performed on 18 patients ureteral obstruction, 8 males and 10 females, aged 52.1 (34-67), 11 with the stricture in the upper segment (complete obstruction in 4 cases), 5 in the middle segment, and 2 in lower segment; and 6 cases complicated with ureteral calculus...
February 10, 2009: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/19369575/replication-of-the-range-of-native-anterior-cruciate-ligament-fiber-length-change-behavior-achieved-by-different-grafts-measurement-using-computer-assisted-navigation
#13
James Robinson, Fatima Cody Stanford, Daniel Kendoff, Volker Stüber, Andrew D Pearle
BACKGROUND: The native anterior cruciate ligament (ACL) does not behave as a simple bundle of fibers with constant tension but as a continuum of ligament fibers with differential length change during knee flexion/extension. Computer-assisted navigation can be used to assess length change in different fibers within the native ACL and to evaluate how different reconstruction grafts replicate the range of native ligament fiber length change behavior. HYPOTHESIS: Anterior cruciate ligament reconstruction graft size and configuration (single-vs double-bundle) are deciding factors as to how much of the native ACL fiber length change behavior is replicated...
July 2009: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/17270846/an-er-yag-laser-bone-cutting-manipulator-for-precise-rotational-acetabular-osteotomy
#14
D Kim, H Owada, N Hata, T Dohi
Rotational acetabular osteotomy (RAO) has an important advantage in that surgical bony defects are reconstructed with a patients' own tissue. We propose a surgical robot for the RAO using Er:YAG laser irradiating mounted on iliac bone to operate RAO precisely and to reduce recovery and trauma. A water-cooling Er:YAG laser (30 J/cm/sup 2/, l=2.94 mum, 20 Hz, 200 msec) that used optical fiber was operated 4-8 irradiation-overlapping ratio. We kept the distance between the laser and the bone at 0.25 mm using force sensor and spring to maintain effective ablation...
2004: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/16293014/nanobiotechnology-implications-for-the-future-of-nanotechnology-in-orthopedic-applications
#15
REVIEW
Michiko Sato, Thomas J Webster
Nanotechnology involves the use of materials with components, such as fibers, grains and particles, that have dimensions of less than 100 nm. While numerous advantages of nanomaterials have been elucidated for catalytic, processing, mechanical, electrical, and optical applications, few have been described for orthopedic applications. Better orthopedic biomaterials are needed since the average lifetime of a bone biomaterial is less than 15 years. This review discusses recent studies that have been conducted to determine the efficacy of nanophase materials as bone implants...
September 2004: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/15856810/radiofrequency-and-laser-ablation-of-spinal-lesions
#16
REVIEW
A Gangi, A Basile, A Basille, X Buy, H Alizadeh, B Sauer, G Bierry
Radiofrequency current and laser energy can be delivered locally through electrode-needle or optical fiber inserted in the tissue and allows local ablation of tissues, up to a volume of 4 to 5 cm in diameter with one application or vaporizes tissue. Tumor ablation guided with medical imaging proved a high local efficacy over 90% for tumors less than 25 mm in the liver, lung, and kidney. The spinal applications of the thermal energy of RF and laser are reported in this paper. First, the tumor ablation is reviewed with malignant and benign tumors...
April 2005: Seminars in Ultrasound, CT, and MR
https://www.readbyqxmd.com/read/15281544/lightwand-assisted-intubation-of-patients-in-the-lateral-decubitus-position
#17
RANDOMIZED CONTROLLED TRIAL
Kuang-I Cheng, Koung-Shing Chu, Siu-Wah Chau, Soo-Lee Ying, Hong-Te Hsu, Yin-Lung Chang, Chao-Shun Tang
In some situations, patients need endotracheal intubation to maintain airway patency while they are constrained in the lateral position. In this study we compared lightwand-guided intubation of 120 randomly enrolled patients placed in the supine, right, or left lateral position. Group S patients were initially placed in the supine position, and subsequent to the artificial airway having been established they were turned to the lateral decubitus position. Group R patients were initially placed in a right decubitus position during induction and intubation...
July 2004: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/14999965/-mini-invasive-surgery-a-new-era
#18
EDITORIAL
N Angelescu, E Popa
Miniinvasive surgery together with general anesthesia, the antibiotherapy and the transplant, the argon laser, the electric and ultrasound scalpel, the mechanical sutures and imagistic techniques are "a new surgical era". The cystoscope Nietze, the Veres needle and the insufflations system with flow and pressure control, the improvement of laparoscopes, the invention of endoscopes with optical fibers, the miniaturized video camera connected to a video monitor and the fabrication of instruments of 10, 3 and 3 mm diameter permitted the rapid develop of miniinvasive surgery...
September 2003: Chirurgia
https://www.readbyqxmd.com/read/12483701/comparison-of-failure-characteristics-of-a-range-of-cancellous-bone-bone-cement-composites
#19
COMPARATIVE STUDY
P Lucksanasombool, W A J Higgs, M Ignat, R J E D Higgs, M V Swain
Over the past decade, orthopedic surgery has embraced an increase in the depth of cement penetration into the adjacent cancellous bone structure. The resultant interdigitation transforms this zone into a thick layer of continuous interpenetrating composite material. The failure behavior of the composite formed with a number of potential bone cements with different bonding ability was investigated. The cancellous bone-cement composites exhibit considerable resistance to crack extension, and in situ optical observation indicates that the contribution of the cancellous bone is analogous to that of a typical fiber bridging process...
January 1, 2003: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/12032047/gastric-distention-in-a-spontaneously-ventilating-patient-with-a-proseal-laryngeal-mask-airway
#20
Cornelius J O'Connor, Sara R Davies, Michael S Stix, Robert W Dolan
Partial upper airway obstruction during spontaneous respiration with a ProSeal laryngeal mask airway can result in gastric distention.
June 2002: Anesthesia and Analgesia
keyword
keyword
51419
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"