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Nevin Manimala Statistics

The Comparison between Spinal Facet Joint Toothed Plate and Traditional Pedicle Screw-rod on Reduction of Thoracolumbar Fracture

Orthop Surg. 2024 May 20. doi: 10.1111/os.14090. Online ahead of print.

ABSTRACT

OBJECTIVE: Thoracolumbar fractures are one of the most common fractures in clinical practice. Surgical intervention is recommended to restore spinal alignment or decompress the nerves when there are unstable fractures or neurological injuries. However, after excessive forward thrust force restoration, facet joint dislocation often occurs between the upper vertebra and the fractured vertebra, which usually leads to unsatisfactory reduction outcomes. Herein, we propose a novel spinal facet joint toothed plate to assist in fracture reduction. The purpose of this study is to evaluate the effectiveness of the new spinal facet joint toothed plate in preventing facet joint dislocation, and its advantages compared to traditional pedicle screw-rod decompression.

METHODS: A total of 26 patients in the toothed plate group and 93 patients in the traditional group who experienced thoracolumbar fracture with reduction were retrospectively included. Relevant patients’ information and clinical parameters were collected. Furthermore, visual analogue scores (VAS) scores and Oswestry disability index (ODI) scores were also collected. Moreover, imaging parameters were calculated based on radiographs. Correlated data were analyzed by χ2 test and t test.

RESULTS: All patients in this study had no postoperative complications. Postoperative VAS scores and ODI scores (p < 0.001) were statistically significant (p < 0.001) in both groups compared with preoperative scores and further decreased (p < 0.001) at final follow-up. In addition, the postoperative vertebral margin ratio (VMR) (p < 0.001) and vertebral angle of the injured vertebrae (p < 0.001) were significantly improved compared with the preoperative period. There were no significant differences in postoperative VAS scores and ODI scores between the two groups. However, toothed plate reduction significantly improved the VMR (p < 0.05) and vertebral angle (p < 0.05) compared with conventional reduction. Ultimately, the total screw accuracy was 98.72% (sum of levels 0 and I), with 100% screw accuracy in the segment related to the tooth plate in the tooth plate group. The dislocation rate was higher in the conventional group (6.45%) than in the new serrated plate repositioning group (0.00%).

CONCLUSION: The facet toothed plate assisted reduction method prevents facet joint dislocation and improves fracture reduction compared to traditional reduction technique, hence it could be considered as a novel surgical strategy for thoracolumbar fracture reduction.

PMID:38766812 | DOI:10.1111/os.14090

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Nevin Manimala Statistics

Variability in HfO(2)-based memristors described with a new bidimensional statistical technique

Nanoscale. 2024 May 20. doi: 10.1039/d4nr01237b. Online ahead of print.

ABSTRACT

A new statistical analysis is presented to assess cycle-to-cycle variability in resistive memories. This method employs two-dimensional (2D) distributions of parameters to analyse both set and reset voltages and currents, coupled with a 2D coefficient of variation (CV). This 2D methodology significantly enhances the analysis, providing a more thorough and comprehensive understanding of the data compared to conventional one-dimensional methods. Resistive switching (RS) data from two different technologies based on hafnium oxide are used in the variability study. The 2D CV allows a more compact assessment of technology suitability for applications such as non-volatile memories, neuromorphic computing and random number generation circuits.

PMID:38766810 | DOI:10.1039/d4nr01237b

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The Effect of Clavicular Tunnel Position on Reduction Loss in Patients with Acute Acromioclavicular Joint Dislocations Operated with a Single-Bundle Suspensory Loop Device

Orthop Surg. 2024 May 20. doi: 10.1111/os.14095. Online ahead of print.

ABSTRACT

OBJECTIVE: The treatment of acromioclavicular joint (ACJ) dislocations offers numerous options, and ongoing debates persist regarding their comparative effectiveness. Among these options, the suspensory loop device (SLD) is one of the most favored treatment modalities. Despite the observed high reduction loss rate associated with SLD, the treatment yields favorable clinical outcomes. This study aimed to investigate the clinical outcomes of patients with acute type 3 and 5 ACJ dislocations who underwent open and arthroscopic procedures using a single-bundle SLD, and to evaluate the effect of clavicular tunnel position on reduction loss.

METHODS: Thirty-seven eligible patients diagnosed with acute type 3 and type 5 ACJ dislocation who underwent open and arthroscopic surgery with a single-bundle SLD between January 2015 and March 2022 were evaluated retrospectively. Demographic data and radiological measurements including coracoclavicular (CC) interval, clavicle length (CL), and implant distance (ID) were recorded. The ID/CL ratio was calculated and a value between 0.17 and 0.24 was considered as “acceptable implant position”. Reduction loss and other complications were noted. Patients were divided into two groups: open (Group 1) and arthroscopic (Group 2). Constant Murray Score (CMS) and Visual Analog Scale (VAS) were used for clinical and functional outcomes. Non-parametric tests were used for statistical analysis of variables.

RESULTS: The study included six females (16.2%) and 31 males (83.8%) with a mean age of 40.2 ± 14.7 years (range: 20-75). The mean follow-up period was 22.3 ± 16.7 months (range: 6-72). The average time from trauma to surgery was 6.3 ± 5.3 days (range: 1-18). At the last follow-up, the CMS was 89.3 ± 8.8 and the VAS score was 2.1 ± 0.9. The mean ID/CL ratio was 0.19 ± 0.1 and 19 patients (51.4%) were between 0.17 and 0.24. Reduction loss was observed in nine patients (24.3%). There were no significant differences between Group 1 and Group 2 regarding operation time (p = 0.998), ID/CL ratio (p = 0.442), reduction loss (p = 0.458), CMS (p = 0.325), and VAS score (p = 0.699). Of the 28 patients without reduction loss, 16 had an ID/CL ratio between 0.17 and 0.24 (p = 0.43). Furthermore, within the 0.17-0.24 interval, CMS was higher with an average of 91.8 ± 5.1 compared to the other intervals (p = 0.559).

CONCLUSION: The clinical and functional outcomes of acute type 3 and type 5 ACJ dislocation operated open and arthroscopically with single-bundle SLD are similar and satisfactory. A clavicular tunnel position in the range of 0.17-0.24 (ID/CL ratio) is recommended to maintain postoperative reduction.

PMID:38766809 | DOI:10.1111/os.14095

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Neighborhood social composition and refugee mental health – quasi-experimental evidence of associations from a Danish population register study

Psychol Med. 2024 May 20:1-9. doi: 10.1017/S0033291724001041. Online ahead of print.

ABSTRACT

BACKGROUND: Refugees are at an elevated risk of some mental disorders with studies highlighting the contributing role of post-migration factors. Studies of migrant groups show neighborhood social composition, such as ethnic density, to be important. This is the first longitudinal study to examine this question for refugees and uses a novel quasi-experimental design.

METHODS: We followed a cohort of 44 033 refugees from being first assigned housing under the Danish dispersal policy, operating from 1986 to 1998, until 2019. This comprised, in effect, a natural experiment whereby the influence of assigned neighborhood could be determined independently of endogenous factors. We examined three aspects of neighborhood social composition: proportion of co-nationals, refugees, and first-generation migrants; and subsequent incidence of different mental disorders.

RESULTS: Refugees assigned to neighborhoods with fewer co-nationals (lowest v. highest quartile) were more likely to receive a subsequent diagnosis of non-affective psychosis, incident rate ratio (IRR) 1.25 (95% confidence interval (CI) 1.06-1.48), and post-traumatic stress disorder (PTSD), IRR 1.21 (95% CI I.05-1.39). A comparable but smaller effect was observed for mood disorders but none observed for stress disorders overall. Neighborhood proportion of refugees was less clearly associated with subsequent mental disorders other than non-affective psychosis, IRR 1.24 (95% CI 1.03-1.50). We found no statistically significant associations with proportion of migrants.

CONCLUSIONS: For refugees, living in a neighborhood with a lower proportion of co-nationals is related to subsequent increased risk of diagnosed mental disorders particularly non-affective psychosis and PTSD.

PMID:38766806 | DOI:10.1017/S0033291724001041

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Mortality trend of cutaneous melanoma in Montenegro from 1990-2018

Eur Rev Med Pharmacol Sci. 2024 May;28(9):3463-3472. doi: 10.26355/eurrev_202405_36192.

ABSTRACT

OBJECTIVE: Every year, melanoma claims over 20,000 lives in Europe. In Montenegro, as in Europe, numerous campaigns have been initiated to raise public awareness about the importance of melanoma prevention and its early detection. Thus, accompanying current diagnostic and therapeutic protocols, new methods of melanoma diagnosis and treatment have been implemented. Studying the trend enables the identification of the groups most burdened by mortality and assesses whether there has been a change in trends based on interventions aiming to reduce mortality. The objective of this study is to evaluate the mortality trend from cutaneous melanoma in Montenegro for the period 1990-2018.

MATERIALS AND METHODS: We have utilized national data on the causes of death from melanoma, code 179 from the ninth and C43 from the tenth revision of the International Classification of Diseases, categorized by gender and age groups. The study utilized various regression techniques, including Joinpoint regression in the Joinpoint Program, Poisson regression, and linear regression in the SPSS 26th Program, to describe the trend.

RESULTS: In Montenegro, during the period from 1990 to 2018, a total of 281 individuals died (51.6% male and 48.4% female). This ranks as the 13th leading cancer in terms of mortality among all cancers. The average age-standardized rate was 1.1 deaths per 100,000 (1.2 for males and 1.0 for females). The number of death cases has been increasing on average by 3.3% annually [average annual percentage change (AAPC) (95% CI) = 3.3 (1.7-4.9); p<0.001] on an overall level and by 5.4% annually among males [AAPC (95% CI) = 5.4 (3.6-7.3); p<0.001] due to the rises in the age groups 55-64 years and 65-74 years with an average annual percent change of respectively 3.2% [AAPC (95% CI) = 3.2 (0.8-5.8); p=0.012] and 5.4% [AAPC (95% CI) = 5.4 (2.7-8.1); p<0.001] overall level, and 4.8% [AAPC (95% CI) = 4.8 (2.4-7.3); p<0.001] and 7.5% [AAPC (95% CI) = 7.5 (4.9-10.2); p<0.001] among males. For females, an increase of 1.1% was recorded, which was not statistically significant [AAPC (95% CI) = 1.1 (-0.8-3.0); p=0.255]. Furthermore, there was a noted increase in the rates at an overall level [β (95% CI) = 0.027 (0.008-0.046); p=0.007] and in the age group 65-74 years [β (95% CI) = 0.249 (0.090-0.407); p=0.003], as well as among males at an overall level [β (95% CI) = 0.052 (0.025-0.079); p<0.001] and for age groups 45-54 years [β (95% CI) = 0.102 (0.011-0.193); p=0.030] and 65-74 [β (95% CI) = 0.410 (0.144-0.676); p=0.004]. In contrast, the rates for females remained constant. The three age groups most burdened by melanoma skin cancer mortality are 65-74 years (23.5%), 55-64 years (21.7%) and 75-84 years (19.2%).

CONCLUSIONS: The results of regression analyses indicate a significant rise in both the number of death cases and mortality rates overall, specifically among males in Montenegro. In females, however, the increase in the number of death cases and rates is not statistically significant. Preventive campaign activities should be redirected towards the most vulnerable groups in terms of mortality, namely males and the elderly population.

PMID:38766804 | DOI:10.26355/eurrev_202405_36192

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Composition analysis of 1,495 cases of upper urinary tract calculi: the role of age and gender

Eur Rev Med Pharmacol Sci. 2024 May;28(9):3447-3454. doi: 10.26355/eurrev_202405_36190.

ABSTRACT

OBJECTIVE: This study aimed to quantitatively analyze the calculi components of upper urinary tract calculi and to explore the relationship between calculus components, demographic characteristics, and underlying diseases.

PATIENTS AND METHODS: Clinical data of 1,495 patients with upper urinary tract calculi were retrospectively collected. The calculi were divided into simple calcium oxalate, calcium oxalate mixed, calcium phosphate mixed, uric acid, magnesium ammonium phosphate, and other components. Statistical software SPSS 22.0 was used to analyze the differences between the stone compositions and various factors. The influencing factors (p < 0.05) were analyzed using multiple logistic regression analysis.

RESULTS: Among 1,495 patients with upper urinary tract calculi, simple calcium oxalate calculi were the most common component (39.7%), followed by calcium oxalate mixed calculi (30.4%), uric acid calculi (13.6%), calcium phosphate mixed calculi (10.4%), magnesium ammonium phosphate calculi (5.8%) and other component calculi (0.1%). Univariate analysis revealed statistically significant differences in stone composition according to gender, age, and hyperuricemia (p < 0.05). Multiple logistic regression analysis showed that compared to men, the odds ratio (OR) values of calcium oxalate mixed stones, calcium phosphate mixed stones, and magnesium ammonium phosphate stones in women were 1.61, 2.50, and 4.17, respectively (p < 0.001). Compared with elderly patients, the OR values of calcium phosphate mixed stones in young and middle-aged patients were 3.14 and 2.70, respectively (p < 0.05).

CONCLUSIONS: Patients with different stone components had different demographic characteristics, and stone components were significantly different between gender and age. Calcium oxalate mixed stones were more common in females, and calcium phosphate mixed stones and magnesium ammonium phosphate stones were more common in females, young patients, and middle-aged patients.

PMID:38766801 | DOI:10.26355/eurrev_202405_36190

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Retrospective evaluation of gestational trophoblastic disease – experience with ultrasounds

Eur Rev Med Pharmacol Sci. 2024 May;28(9):3455-3462. doi: 10.26355/eurrev_202405_36191.

ABSTRACT

OBJECTIVE: Our study aims to determine the frequency and types of GTD (Gestational Trophoblastic Disease) in our clinic, to evaluate its relationship with clinical parameters, and the consistency of clinical prediagnosis and pathological definitive diagnosis.

PATIENTS AND METHODS: In the present study, hospital records of 120 patients with gestational trophoblastic disease between January 2019 and August 2022 were obtained and evaluated retrospectively. Demographic, hematological, biochemical, and clinical data were collected in detail, and the data were analyzed statistically.

RESULTS: Our study included a total of 120 female patients, with an average age of 31.16±9.70. The average number of patients was 3. The average time for women to receive the diagnosis was 9.80±2.45 weeks, with the most frequent complaint on our part being bleeding (85.8%). When the pathology outcomes of the patients we included in our study were examined, it was found that the number of patients diagnosed with incomplete abortion was 34, the number of patients diagnosed with complete abortion was 82, the number of invasive moles diagnosed was 3, and the number of patient diagnosed with choriocarcinoma was 1. Kappa ratio was calculated as 0.419 (p<0.001) when the compliance of the clinical diagnosis was assessed. This value was consistent with median level alignment. In a study that examined the three years of our calism in our bulk, 1.8 per 1,000 births were followed frequently.

CONCLUSIONS: We should inform patients in detail about gestational trophoblastic diseases and warn patients not to delay their consequences. We should recommend that pregnancy be avoided for 12 months for low-risk patients and 18 months for high-risk patients after GTD.

PMID:38766798 | DOI:10.26355/eurrev_202405_36191

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Efficacy of capacitive-resistive therapy on the treatment of myofascial pain – A randomized control trial

J Bodyw Mov Ther. 2024 Apr;38:86-91. doi: 10.1016/j.jbmt.2023.09.010. Epub 2024 Jan 23.

ABSTRACT

BACKGROUND: Myofascial pain syndrome is a painful musculoskeletal condition with muscle spasm, referred pain, stiffness, restricted range of motion. Capacitive-resistive diathermy heats deep tissues by transferring energy through radiofrequency waves. Although this modality is used to treat various musculoskeletal disorders, there is no specific data on myofascial trigger points. Thus, we aimed to evaluate the effectiveness of capacitive-resistive diathermy on the myofascial trigger points.

METHODS: Thirty-six volunteers with active myofascial trigger points were included. Patients were randomly and equally allocated into two groups. Group-1 is the capacitive-resistive diathermy treatment group; Group-2 is the placebo capacitive-resistive diathermy (PG). Visual analog scale (VAS), pain pressure threshold (PPT), neck disability index (NDI), neck range of motion (nROM), Short form-36 (SF-36) were used as outcomes before and after the intervention.

RESULTS: In both groups, VAS, PPT, NDI score significantly improved within the groups (p < 0.05). The CRG showed a statistically significant improvement in nROM for flexion, extension, and rotation (p < 0.05). However, ROM increase in CRG is not superior to PG (p > 0.05).

CONCLUSIONS: There was no significant difference between the two groups. We thought positive results in the PG might attributed to doing exercise. As a result, capacitive-resistive diathermy is not superior to exercise, but can be used as an adjuvant modality in myofascial trigger points treatment.

PMID:38763621 | DOI:10.1016/j.jbmt.2023.09.010

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Comparative analysis of postural stability and risk of falling and developing disability among overweight and obese women over 40 years

J Bodyw Mov Ther. 2024 Apr;38:549-553. doi: 10.1016/j.jbmt.2024.03.045. Epub 2024 Mar 26.

ABSTRACT

BACKGROUND: Increased body mass index (BMI) adversely affects the mechanics of the musculoskeletal system. It is known that obese people have poorer postural stability and mobility-related outcomes compared to normal weight people, but there is limited research comparing overweight and class 1 obese people, two consecutive and prevalent BMI categories.

AIMS: To compare postural stability, functional mobility, and risk of falling and developing disability between overweight and obese women, and to investigate the relationship of BMI and body weight with the outcomes.

METHODS: Thirty women with class 1 obesity and 30 overweight women were included. Standing postural stability with eyes-open and eyes-closed and stability limits were assessed using the Prokin system. The Timed Up and Go Test (TUG) was used to assess functional mobility and risk of falling (≥11 s) and developing disability (≥9 s).

RESULTS: The average center of pressure displacements on the y-axis (COPY) obtained during quiet standing with both eyes-open and eyes-closed were higher in obese women than overweight women (p < 0.05) and the effect sizes were moderate for the results. The COPY values in the eyes-open and eyes-closed conditions were correlated with BMI (r = 0.295 and r = 0.285, p < 0.05). Furthermore, the COPX value in the eyes-open condition and the TUG score were correlated with body weight (r = 0.274 and r = 0.257, p < 0.05).

CONCLUSIONS: Obese women had poorer static standing stability in the anteroposterior direction than overweight women, while functional mobility and risk of falling and developing disability did not differ. Furthermore, BMI and body weight were related to poorer static standing stability.

PMID:38763607 | DOI:10.1016/j.jbmt.2024.03.045

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Effect of thoracolumbosacral braces on running ground reaction force components in male individuals with kyphosis

J Bodyw Mov Ther. 2024 Apr;38:514-519. doi: 10.1016/j.jbmt.2024.03.055. Epub 2024 Mar 23.

ABSTRACT

BACKGROUND & AIMS: Braces are one of the methods for kyphosis treatment, but they can relocate the center of gravity of the trunk, affecting the ground reaction force (GRF) during running. Therefore, this study aimed to investigate the effects of two types of thoracolumbosacral braces on running GRF components in individuals with kyphosis.

MATERIALS & METHODS: Participants were 15 males diagnosed with kyphosis who volunteered in this quasi-experimental study. Each subject performed the barefoot running trials on the force plate with one simple brace, with a sensor brace, and without the brace condition. The ground reaction forces components were calculated in the stance phase. Statistical analysis was done with repeated measures test with a significant level of 0.05.

RESULTS: Peak medial ground reaction force when running with a sensor brace was lower than running with a simple brace (p = 0.017). Free moments were similar during three running conditions (p > 0.05).

CONCLUSION: Lower maximum medial ground reaction force while using a sensor brace may possibly demonstrate the beneficial effects of a sensor brace in individuals with kyphosis.

PMID:38763601 | DOI:10.1016/j.jbmt.2024.03.055