Catalogue Search | MBRL
Are you sure you want to remove the book from the shelf?
{{itemTitle}}
7
result(s) for
"Abbassian, Ali"
Sort by:
Saw transection of retained compression screws with damaged heads instead of removal in revision first metatarsal osteotomy: a technique tip
Distal first metatarsal osteotomy is performed to correct hallux valgus. The surgery is being performed throughout the UK in increasing numbers. The osteotomies used are commonly fixed with one or two variable pitch compression screws. Recurrence of the deformity or inadequate correction in the primary surgery may require revision osteotomy which necessitates removal of previous screws. Revision rates for scarf osteotomy have been reported at 5%. Removal of screws can be challenging as they are often buried in bone and/or the screw heads can get damaged even despite meticulous preparation. Various techniques for removal of damaged screws are described, which require additional equipment and may result in significant loss of the host bone. We describe another technique where a standard Stryker TPS sagittal saw and saw blade (Kalamazoo, USA) are used to cut through the shaft of the compression screws in line with the planned revision osteotomy. We have successfully performed this on two occasions with good results, and describe our experience of using this technique which eliminates the need for complex over drilling procedures often required for removing stripped and retained screws
Journal Article
Detection of Orthopaedic Implants by Airport Metal Detectors
We performed a questionnaire study to establish the frequency and consequences of the detection of orthopaedic implants by airport security and to help us advise patients correctly. All published literature on this subject is based on experimental studies and no 'real-life' data are available.
A total of 200 patients with a variety of implants were identified. All patients were sent a postal questionnaire enquiring about their experience with airport security since their surgery.
Of the cohort, 154 (77%) patients responded. About half of the implants (47%) were detected, but the majority of patients (72%) were not significantly inconvenienced. When detected, only 9% of patients were asked for documentary evidence of their implant. We also found that patients with a total knee replacement (TKR) had a greater chance of detection as compared to those with a total hip replacement (THR; 71% versus 31%; P = 0.03).
All patients, and in particular those with a TKR, can be re-assured that, although they have a fair chance of detection by airport security, a major disruption to their journey is unlikely. We advise that documentation to prove the presence of an orthopaedic implant should be offered to those who are concerned about the potential for inconvenience, but such documentation is not required routinely.
Journal Article
Effectiveness of Viola Flower Syrup Compared with Polyethylene Glycol in Children with Functional Constipation: A Randomized, Active-Controlled Clinical Trial
Background. Functional constipation (FC) is a health concern that is prevalent in the pediatric population. It lowers the quality of life and increases the probability of comorbidities. As a complementary modality, herbal medicine has been considered useful in a variety of conditions. Persian medicine (PM) resources mention the Viola flower as an effective herb in treating constipation. The purpose of the current trial was to evaluate the efficacy of Viola flower syrup (VFS) compared with polyethylene glycol (PEG) in children with functional constipation. Methods. This randomized, active-controlled, single-center trial was conducted on 140 children aged between 4 and 10 years with confirmed FC according to Rome III criteria. Participants were randomly assigned to receive either VFS or PEG for four weeks. Independent t-test and general linear model (GLM) repeated measures analysis of variance were used to determine the intergroup difference, and paired sample t-test was used to evaluate the intragroup difference. Results. After four weeks of intervention, 133 individuals (66 in VFS and 67 in the PEG group) were analyzed. Results of both groups demonstrated significant improvement in all measured criteria at the end of the study compared to baseline (P<0.001). No significant difference was observed between the two groups at baseline or at the end of the study (P>0.05), except for fecal retention at baseline (P=0.028). Participants in the PEG group experienced more side effects compared to the VFS group. Conclusion. The findings of this investigation indicated that VFS is an effective and relatively safe medication to be used in the treatment of pediatric FC.
Journal Article
Psychometric properties of the persian version of the inventory of statements about self-injury (ISAS)
Background
Non-suicidal self-injury (NSSI) is a serious public health problem prevalent among adolescents and young adults. The present study examines the factor structure, internal consistency, and validity of the Persian version of the Inventory of Statements About Self-injury (ISAS), a self-report measure designed to comprehensively assess non-suicidal self-injury (NSSI).
Methods
A total of 655 Iranian school-attending adolescents completed study measures online, and 246 youth (37.70 %) (M
age
= 15.38,
SD
± 0.50; 53 % female) reported a history of NSSI at least once during their lifetime.
Results
Confirmatory factor analysis supported the proposed two-factor model of ISAS (i.e., Interpersonal and Intrapersonal dimensions), which were internally consistent and yielded direct associations with converging correlates (e.g., depression, anxiety, irritability, and anger).
Conclusions
Findings indicated that the Persian version of the ISAS has sound psychometric properties and is a valid and reliable self-report measure of NSSI.
Journal Article
Effect of tactile stimulus frequency on time perception: the role of working memory
In most models of interval timing, there is a central clock, which is considered to be highly protected from the effects of external stimuli. However, many studies have reported such effects and different theories are proposed to explain the observations. These include the effect of arousal, attention sharing, memory load and information processing on central clock as well as change in the speed of the pacemaker. In this study, we used regular vibro-tactile stimuli with different frequencies in a “duration reproduction task” to investigate the effect of stimulus content on interval timing. Results showed that subjects overestimated the duration as a function of test stimulus frequency. A significant correlation between increasing the test frequency and overestimation of subjective time was observed. We further investigated the effect of blank and filled gaps with various durations on time estimation. Analysis revealed that regardless of gap duration, subjective time increased in the filled gap condition, compared to the blank gap. This effect was independent from contextual stimuli and correlated to the mean number of stimuli during the temporal interval rather than rate of stimulus presentation.
Journal Article
Kinesthetic memory in distance reproduction task: importance of initial hand position information
The role of the initial hand position in planning and implementation of a goal-directed movement is a matter of debate. We designed a non-visually guided repetitive reaching movement task to investigate the role of proprioceptive information of the initial or end hand position in implementation of kinesthetic memory. The experimental design consisted four experiments. Each experiment consisted two phases: the training phase and the test phase. In the training phase the subjects were asked to learn and memorize the distance between start and end points by moving their hands ten times between them. In the test phase, the end point was removed, and starting from the same initial position, the subjects were asked to reproduce the memorized distance. In all experiments, varied conditions called \"mask phase\" preceded the test phase: a 5-s delay in experiment 1, shifting both initial and end points while keeping the distance constant in experiment 2, shifting only the end point, while keeping the initial point constant in experiment 3 and shifting only the initial point and keeping the end point constant in experiment 4. In comparison to experiment 1 (which was considered as the control group), no significant error in distance reproduction occurred in experiment 3, while experiments 2 and 4 showed significant error. These findings mean that although the distance information was available during the mask phase of experiment 2, subjects could not efficiently use this information to reproduce the distance. The other two experiments suggest that this error was caused by changing the initial hand position and not the end point. We conclude that in a kinesthetic-guided distance reproduction task, the initial hand position is more important for implementation of distance memory rather than the end point.
Journal Article