scholarly journals First tarsometatarsal fusion using saw preparation vs. standard preparation of the joint: A cadaver study

2020 ◽  
Vol 26 (6) ◽  
pp. 703-707
Author(s):  
Nicholas Dahlgren ◽  
John L. Johnson ◽  
Samuel Huntley ◽  
Haley McKissack ◽  
Karthikeyan Chinnakkannu ◽  
...  
Keyword(s):  
Cadaver Study ◽  
Standard Preparation

Diagnostic yield of conventional and digital cephalometric images: a human cadaver study

2001 ◽  
Vol 30 (2) ◽  
pp. 101-105 ◽  
Author(s):  
F Gijbels ◽  
C B Serhal ◽  
G Willems ◽  
H Bosmans ◽  
G Sanderink ◽  
...  
Keyword(s):  
Diagnostic Yield ◽  
Cadaver Study ◽  
Human Cadaver ◽  
Human Cadaver Study

A in Vivo Assay for Standardizing Heparin Preparations

1979 ◽  
Vol 41 (03) ◽  
pp. 576-582
Author(s):  
A R Pomeroy
Keyword(s):  
In Vitro Assays ◽  
British Pharmacopoeia ◽  
In Vitro Method ◽  
Standard Preparation ◽  
Reliable Estimation ◽  
Assay Procedure ◽  
Accuracy And Precision ◽  
Heparin Preparation

SummaryThe limitations of currently used in vitro assays of heparin have demonstrated the need for an in vivo method suitable for routine use.The in vivo method which is described in this paper uses, for each heparin preparation, four groups of five mice which are injected intravenously with heparin according to a “2 and 2 dose assay” procedure. The method is relatively rapid, requiring 3 to 4 hours to test five heparin preparations against a standard preparation of heparin. Levels of accuracy and precision acceptable for the requirements of the British Pharmacopoeia are obtained by combining the results of 3 to 4 assays of a heparin preparation.The similarity of results obtained the in vivo method and the in vitro method of the British Pharmacopoeia for heparin preparations of lung and mucosal origin validates this in vivo method and, conversely, demonstrates that the in vitro method of the British Pharmacopoeia gives a reliable estimation of the in vivo activity of heparin.

scholarly journals Effect of Splinting in Accuracy of Two Implant Impression Techniques

2014 ◽  
Vol 40 (6) ◽  
pp. 633-639 ◽  
Author(s):  
Erica Dorigatti de Avila ◽  
Fernanda de Matos Moraes ◽  
Sabrina Maria Castanharo ◽  
Marcelo Antonialli Del'Acqua ◽  
Francisco de Assis Mollo
Keyword(s):  
Confidence Interval ◽  
Analysis Of Variance ◽  
Impression Material ◽  
Titanium Screw ◽  
Standard Preparation ◽  
Implant Abutment ◽  
Interface Gaps ◽  
Group 2 ◽  
Group 1

Because there is no consensus in the literature about the need for a splint between copings, the aim of this study was to evaluate, in vitro, the accuracy of 2 impression techniques for implant-supported prostheses. A master cast was fabricated with four parallel implant abutment analogs and a passive framework. Two groups with 5 casts each were formed: Group 1 (squared impression copings with no splint: S) and Group 2 (splinted squared impression copings, using metal drill burs and Pattern resin: SS). The impression material used was polyvinyl siloxane with open trays for standard preparation of the casts. For each cast, the framework was positioned, and a titanium screw was tightened with 10 N·cm torque in analog A, after which measurements of the abutment-framework interface gaps were performed at analogs C and D. This process was repeated for analog D. These measurements were analyzed using software. A one-way analysis of variance (ANOVA) with a confidence interval of 95% was used to analyze the data. Significant differences were detected between S and SS in relation to the master cast (P ≤ 0.05). The median values of the abutment-framework interface gaps were as follows: master cast: 39.64 μm; squared impression copings with no splint: 205.86 μm; splinted squared impression copings: 99.19 μm. Under the limitations of this study, the technique presented for Group 2 produces better results compared with the technique used for Group 1.

Are water precautions necessary after tympanostomy tube placement? A cadaver study

2021 ◽  
Vol 143 ◽  
pp. 110632
Author(s):  
Anthony Sanchez ◽  
Gabriel Arom ◽  
Hector A. Perez ◽  
Laura Royal ◽  
TJ O-Lee
Keyword(s):  
Cadaver Study ◽  
Tube Placement ◽  
Tympanostomy Tube

scholarly journals Polymeric stents for the Eustachian tube: development and human cadaver study

2020 ◽  
Vol 6 (3) ◽  
pp. 213-216
Author(s):  
Kerstin Schümann ◽  
Tamara Wilfling ◽  
Gerrit Paasche ◽  
Robert Schuon ◽  
Thomas Lenarz ◽  
...  
Keyword(s):  
Eustachian Tube ◽  
Chronic Otitis Media ◽  
Cadaver Study ◽  
Human Cadaver ◽  
Tube Function ◽  
Human Cadavers ◽  
Radiopaque Markers ◽  
Cadaver Studies ◽  
Preclinical Safety ◽  
Human Cadaver Study

AbstractImpairment of Eustachian tube function with nonsufficient ventilation of the middle ear is a main cause for chronic otitis media. To provide an effective and safe therapy, the innovative concept of Eustachian tube stenting was established. Biodegradable polymeric stents are developed to restore impaired tube function and dissolve after fulfilling their supportive purpose. To evaluate the applicability of the stents in the Eustachian tube, prototypes in conjunction with corresponding implantation instruments were tested in human cadaver studies. Radiopaque markers and a diaphanoscopic approach were tested as additional features to prove correct positioning of catheter and stent in the tube. In the current study biodegradable polymeric stents were implanted in the Eustachian tube of human cadavers without difficulty. Correct positioning of the stents in the tube was proved by diaphanoscopy during intervention and postoperative tomographic and histological analyses. Once designs are optimized on the basis of cadaver studies, preclinical safety and efficacy studies using animal models will be initiated.

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