scholarly journals Axis vertebral dimensions for safe screw placement: A CT normative data analysis

2020 ◽  
Vol 11 (5) ◽  
pp. 871-875
Author(s):  
Vibisha Pragash ◽  
Balaji Douraiswami ◽  
Suresh Subramani
1975 ◽  
Vol 37 (3) ◽  
pp. 911-919 ◽  
Author(s):  
Dennis P. Saccuzzo

A parallel-response questionnaire, the Therapy Session Report, was administered to the 57 patients and 19 therapists of the Kent State University Psychological Clinic immediately following each intake session. The purpose of the study was to provide normative data on the content of dialogue in psychotherapy and to extend the generalizability of previous results. Data analysis focused on the frequency, structure, and patient-therapist agreement of the topics discussed. Items most frequently endorsed by both patients and therapists were: “Relations with the opposite sex,” “Mother,” and “Hopes or fears about the future.” Factor analysis resulted in 7 factors for therapists and 7 for patients, 5 of which were highly similar. Results were interpreted as underscoring the necessity of specificity in process research. A proposal for conducting process research is presented.


2017 ◽  
Vol 26 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Bayard Wilson ◽  
Erik Curtis ◽  
Brian Hirshman ◽  
Ahmet Oygar ◽  
Karen Chen ◽  
...  

OBJECTIVE Normative data exists for stimulus-evoked pedicle screw electromyography (EMG) current thresholds in the lumbar spine, and is routinely referenced during spine surgeries to detect a screw breach, prevent injury of neural elements, and ensure the most biomechanically sound instrumentation construct. To date, similar normative data for cervical lateral mass screws is limited, thus the utility of lateral mass screw testing remains unclear. To address this disparity, in this study the authors describe cumulative lateral mass screw stimulation threshold data in patients undergoing posterior cervical instrumentation with lateral mass screws. These data are correlated with screw placement on postoperative imaging, and a novel correlation is discovered with direct clinical implications. METHODS Using a ball-tip probe, 154 lateral mass screws in 21 patients were electrically tested intraoperatively. In each case, for each screw, the lowest (or threshold) current at which the first polyphasic stimulus-evoked EMG response was reproducibly observed by a neurophysiologist was recorded. All patients underwent postoperative CT. Screw position within the lateral mass was first measured in the axial and sagittal planes for each lateral mass screw using the CT images. Screw placement was also evaluated by 2 independent physicians, blinded to current threshold data, on a binary scale of acceptability. The predictive capacity of screw EMG threshold data was evaluated via multivariable regression analyses and receiver operating characteristic (ROC) analyses. Predictive capacity was examined with respect to screw position within the lateral mass, as well as screw acceptability. RESULTS Lateral mass screw EMG thresholds did not appear to differ significantly for screws considered “acceptable” versus “unacceptable” according to the radiographic criteria. Accordingly, ROC analysis confirmed that EMG current threshold data were of minimal utility in predicting screw radiographic acceptability. However, EMG threshold was significantly predictive of screw medial distance from the spinal canal. A screw stimulating below 7.5 mA correctly identified a screw as being within 2 mm of the spinal canal with 75% sensitivity and 92% specificity (positive predictive value 20%, negative predictive value 99.3%), independent of its distance relative to other lateral mass landmarks. EMG current threshold was not significantly predictive of screw deviation in the superior or inferior directions, and was inversely predictive of screw deviations in the lateral direction. CONCLUSIONS In the context of uncertainty regarding the utility of cervical lateral mass EMG current threshold data, this study found that EMG current thresholds correspond significantly, and exclusively, with screw distance from the spinal canal. This association appears independent of other criteria for screw misplacement. As such, the authors recommend that EMG current thresholds be referenced in the case of a suspected medial breach as an effective means to rule out screw placement too medial to the spinal canal.


2020 ◽  
Vol 4 (2) ◽  
pp. 283-293
Author(s):  
Jeffry Latumahina

ABSTRACTThis research analyzed a Distribution Agreement between Roche Indonesia company (“Roche”) and distributing company Perusahaan Dagang Tempo (“Tempo”) which had an arbitration clause and verdict of South Jakarta District Court in Roche-Tempo case consisted of Putusan No. No.454/Pdt.G/1999/PN.Jak.Sel dated 29 May 2000. In distributing Roche’s pharmaceutical products in Indonesian domestic market, Roche had a distribution agreement with Tempo as its sole distributor. During the contract period, Roche terminated part of the contract unilaterally, which suffered Tempo. Tempo then filed a lawsuit against Roche to South Jakarta District Court, which was then rejected by Roche, claiming that the District Court had no jurisdiction over the case since the Distribution Agreement had an arbitration clause stipulating that any dispute must be settled arbitration, not the court. This Research was aimed to observe and to analyze the legal forces and the existences of arbitration clause in the Distribution Agreement viewed from Law No.30 of 1999 on Arbitration and Alternative Dispute Resolution (“Arbitration Law”). The research was also to find out whether or not the consideration of the Judge in deciding a dispute of an agreement which involves arbitration clause was in accordance with Arbitration Law. This research applies juridical normative approach with the specification of analysis descriptive research, as well as qualitative normative data analysis method. This research showed that the arbitration clause in the Distribution Agreement had a legal force and binding capacity over Tempo and Roche. Tempo’s denial of this clause by filing the case to the district court was clearly inappropriate and dishonor the agreement. As for the South Jakarta District Court, which claimed that it had jurisdiction over this case was not in accordance with Arbitration Law.  Keywords: Arbitration Clause; Distribution Agreement; Court Jurisdiction; Roche; Tempo


2014 ◽  
Vol 34 (10) ◽  
pp. 1007-1010 ◽  
Author(s):  
Mariana Isa Poci Palumbo ◽  
Luiz Antonio de Lima Resende ◽  
José Carlos de Figueiredo Pantoja ◽  
Ian G. Mayhew ◽  
Alexandre Secorun Borges

Brainstem auditory-evoked potential (BAEP) has been widely used for different purposes in veterinary practice and is commonly used to identify inherited deafness and presbycusis. In this study, 43 Boxer dogs were evaluated using the BAEP. Deafness was diagnosed in 3 dogs (2 bilateral and 1 unilateral) allowing the remaining 40 Boxers to be included for normative data analysis including an evaluation on the influence of age on the BAEP. The animals were divided into 2 groups of 20 Boxers each based on age. The mean age was 4.54 years (range, 1-8) in group I, and 9.83 years (range, 8.5-12) in group II. The mean latency for I, III, and V waves were 1.14 (±0.07), 2.64 (±0.11), and 3.48 (±0.10) ms in group I, and 1.20 (±0.12), 2.73 (±0.15), and 3.58 (±0.22) ms in group II, respectively. The mean inter-peak latencies for the I-III, III-V and I-V intervals were 1.50 (±0.15), 0.84 (±0.15), and 2.34 (±0.11) ms in group I, and 1.53 (±0.16), 0.85 (±0.15), and 2.38 (±0.19) ms in group II, respectively. Latencies of waves I and III were significant different between group I and II. For the I-III, III-V and I-V intervals, no significant differences were observed between the 2 groups. As far as we know, this is the first normative study of BAEP obtained from Boxer dogs.


Author(s):  
P. Ingram

It is well established that unique physiological information can be obtained by rapidly freezing cells in various functional states and analyzing the cell element content and distribution by electron probe x-ray microanalysis. (The other techniques of microanalysis that are amenable to imaging, such as electron energy loss spectroscopy, secondary ion mass spectroscopy, particle induced x-ray emission etc., are not addressed in this tutorial.) However, the usual processes of data acquisition are labor intensive and lengthy, requiring that x-ray counts be collected from individually selected regions of each cell in question and that data analysis be performed subsequent to data collection. A judicious combination of quantitative elemental maps and static raster probes adds not only an additional overall perception of what is occurring during a particular biological manipulation or event, but substantially increases data productivity. Recent advances in microcomputer instrumentation and software have made readily feasible the acquisition and processing of digital quantitative x-ray maps of one to several cells.


1978 ◽  
Vol 9 (4) ◽  
pp. 220-235
Author(s):  
David L. Ratusnik ◽  
Carol Melnick Ratusnik ◽  
Karen Sattinger

Short-form versions of the Screening Test of Spanish Grammar (Toronto, 1973) and the Northwestern Syntax Screening Test (Lee, 1971) were devised for use with bilingual Latino children while preserving the original normative data. Application of a multiple regression technique to data collected on 60 lower social status Latino children (four years and six months to seven years and one month) from Spanish Harlem and Yonkers, New York, yielded a small but powerful set of predictor items from the Spanish and English tests. Clinicians may make rapid and accurate predictions of STSG or NSST total screening scores from administration of substantially shortened versions of the instruments. Case studies of Latino children from Chicago and Miami serve to cross-validate the procedure outside the New York metropolitan area.


2020 ◽  
Vol 5 (1) ◽  
pp. 290-303
Author(s):  
P. Charlie Buckley ◽  
Kimberly A. Murza ◽  
Tami Cassel

Purpose The purpose of this study was to explore the perceptions of special education practitioners (i.e., speech-language pathologists, special educators, para-educators, and other related service providers) on their role as communication partners after participation in the Social Communication and Engagement Triad (Buckley et al., 2015 ) yearlong professional learning program. Method A qualitative approach using interviews and purposeful sampling was used. A total of 22 participants who completed participation in either Year 1 or Year 2 of the program were interviewed. Participants were speech-language pathologists, special educators, para-educators, and other related service providers. Using a grounded theory approach (Glaser & Strauss, 1967 ) to data analysis, open, axial, and selective coding procedures were followed. Results Three themes emerged from the data analysis and included engagement as the goal, role as a communication partner, and importance of collaboration. Conclusions Findings supported the notion that educators see the value of an integrative approach to service delivery, supporting students' social communication and engagement across the school day but also recognizing the challenges they face in making this a reality.


Sign in / Sign up

Export Citation Format

Share Document