scholarly journals LATERAL MENISCUS WIDTH AT THE POPLITEUS RECESS AND THE RELEVANCE TO SAUCERIZATION OF DISCOID LATERAL MENISCI

2020 ◽  
Vol 8 (4_suppl3) ◽  
pp. 2325967120S0022
Author(s):  
Jamison G. Gamble ◽  
Abdalla B. Abdalla ◽  
Molly Meadows ◽  
Thomas Rauer ◽  
Charles M. Chan ◽  
...  
Keyword(s):  
Null Hypothesis ◽  
Pain Treatment ◽  
Lateral Meniscus ◽  
Discoid Lateral Meniscus ◽  
Average Width ◽  
Direct Measurements ◽  
Text Figure ◽  
Arthroscopic Meniscectomy ◽  
Relationship Of ◽  
The Relationship

Background: Discoid lateral meniscus (DLM) is a congenital anomaly of the knee where the normally “O” shaped lateral meniscus has redundant tissue filling the “O” and covering the lateral tibial plateau. The redundant tissue can cause mechanical symptoms and pain. Treatment of symptomatic DLM is arthroscopic saucerization to reshape the meniscus to a more normal contour. Enough tissue must be removed to eliminate mechanical symptoms but not too much as to create instability. The residual width of the meniscus is crucial at the popliteus hiatus because here the peripheral rim is unattached to the capsule. The literature recommends a residual width of 6-8 mm.1,2 Purpose/Hypothesis: The primary purpose of this research is to determine the width of the meniscus at the popliteal hiatus in normal specimens. Our null hypothesis is that a residual width of 6-8 millimeters will be sufficient for saucerization of DLM. Methods: We made direct measurements of lateral meniscus radial width from the outer rim at the popliteus hiatus to the inner edge (Figure 1) in 19 specimens (ages 2 months to 120 months.) We measured one four-year-old specimen with bilateral complete DLM. We also measured 39 digital images of specimens (ages 1 month to 132 months) using ImageJ. Finally, we made direct measurements of 8 skeletally mature specimens. Results: Figure 2 shows the relationship of meniscus width as a function age. The average width of specimens <3-years-old was 5.5mm. The average width of the ten-year-old specimens was 12mm. The average width of the skeletally mature specimens was 16mm. The four-year-old DLM specimen measured 19 mm. Conclusions: We rejected our null hypothesis. Direct measurements suggest that a residual width of 6-8mm is insufficient for children 8-years and older. A width of at least a full centimeter more closely approximates our findings, and for adolescents consider a residual rim of 15 mm. For children less than six-years-old a residual width of 6-8mm is sufficient. References: Kocher MS, Logan CA, Kramer DE. Discoid lateral meniscus in children: diagnosis, management, and outcomes. J Am Acad Orthop Surg 2017;25:736-743. Hayashi LK, Yamaga H, Ida K, Miura T. Arthroscopic meniscectomy for discoid lateral meniscus in children. J Bone Joint Surg. 1988;70-A: 1495-1500. [Figure: see text][Figure: see text]

scholarly journals SAUCERIZATION OF DISCOID LATERAL MENISCI. HOW MUCH RESIDUAL WIDTH IS RIGHT?

2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0044
Author(s):  
Abdalla Abdalla ◽  
Molly Meadows ◽  
Thomas Rauer ◽  
Charles Chan ◽  
Theodore Ganley ◽  
...  
Keyword(s):  
Null Hypothesis ◽  
Tibial Plateau ◽  
Pain Treatment ◽  
Lateral Meniscus ◽  
Discoid Lateral Meniscus ◽  
Lateral Tibial Plateau ◽  
Average Width ◽  
Direct Measurements ◽  
Relationship Of ◽  
The Relationship

Objectives: Discoid lateral meniscus (DLM) is a congenital anomaly of the knee where the normally “O” shaped lateral meniscus has redundant tissue filling the “O” and covering the lateral tibial plateau. The redundant tissue can degenerate and cause mechanical symptoms and pain. Treatment of symptomatic DLM is arthroscopic saucerization to reshape the meniscus to a more normal contour. Enough tissue must be removed to eliminate mechanical symptoms but not too much as to create instability. The residual width of the meniscus is crucial at the popliteus hiatus because here the peripheral rim is unattached to the capsule. The literature recommends a residual width of 6-8 mm. The primary purpose of this research was to determine the width of the meniscus at the popliteal hiatus in normal specimens. Our null hypothesis was that a residual width of 6-8 millimeters will be sufficient for saucerization of DLM. Methods: We made direct measurements of lateral meniscus radial width from the outer rim at the popliteus hiatus to the inner edge (Figure 1) in 19 specimens (ages 2 months to 11 years.) We measured one four-year-old specimen with bilateral complete DLM (Figure 2.) We also measured 39 digital images of specimens (ages 1-month to 12-years) using ImageJ. Finally, we made direct measurements of 8 skeletally mature specimens. Results: Figure 3 shows the relationship of meniscus width as a function age. The average width of specimens <3-years-old was 5.5mm. The average width of the ten-year-old specimens was 12mm. The average width of the skeletally mature specimens was 16mm. The four-year-old DLM specimen measured 19 mm. Conclusions: We rejected our null hypothesis. Direct measurements suggest that a residual width of 6-8mm is insufficient for children 8-years and older. A width of at least a full centimeter more closely approximates our findings, and for adolescents consider a residual rim of 15 mm. For children less than six-years-old a residual width of 6-8mm is sufficient.

Radial Width of the Lateral Meniscus at the Popliteal Hiatus: Relevance to Saucerization of Discoid Lateral Menisci

2021 ◽  
pp. 036354652110566
Author(s):  
Jamison G. Gamble ◽  
Abdalla B. Abdalla ◽  
Molly G. Meadows ◽  
Thomas Rauer ◽  
Charles M. Chan ◽  
...  
Keyword(s):  
Null Hypothesis ◽  
Pain Treatment ◽  
Lateral Meniscus ◽  
Cross Sectional Study ◽  
Discoid Lateral Meniscus ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Average Width ◽  
Collagenous Tissue ◽  
Direct Measurements

Background: A discoid lateral meniscus (DLM) is a congenital anomaly of the knee in which the lateral meniscus has an “O” shape and contains irregular, abnormal collagenous tissue. A DLM can cause mechanical symptoms and pain. Treatment of a symptomatic DLM is arthroscopic saucerization to reshape the meniscus to a more normal contour. Enough tissue must be removed to eliminate mechanical symptoms but not too much to create instability. The residual width of the meniscus is crucial at the popliteus hiatus because here the peripheral rim is unattached at the capsule. Reports in the literature recommend a residual width of 6 to 8 mm. Purpose/Hypothesis: The purpose of this research was to determine the width of the lateral meniscus at the popliteal hiatus in normal specimens. Our null hypothesis was that a residual width of 6 to 8 mm will be sufficient to approximate normal anatomy. Study Design: Cross-sectional study; Level of evidence, 3. Methods: We made direct measurements of the radial width of the lateral meniscus from the outer rim at the popliteal hiatus to the inner edge in 19 specimens (age, 2-120 months.) We measured one 4-year-old specimen with a bilateral complete DLM. We also measured 39 digital images of specimens (age, 1-132 months) using ImageJ. Finally, we made direct arthroscopic measurements of 8 skeletally mature specimens. Results: The average width of specimens <3 years old was 5.5 mm. The average width of the 10-year-old specimens was 12 mm. The average width of the skeletally mature specimens was 16 mm. A 4-year-old DLM specimen measured 19 mm. Conclusion: We rejected our null hypothesis. Direct measurements suggest that a residual width of 6 to 8 mm is insufficient for children ≥8 years old. A width of at least a full centimeter approximates the normal for 8-year-olds and at least 15 mm for adolescents.

Relationship of Psychological well-being with Depression and Anxiety among Heart Patients

2021 ◽  
Vol 15 (11) ◽  
pp. 3101-3102
Author(s):  
Babar Javaid ◽  
Abrar Ahmed ◽  
Gohar Ali Arshad ◽  
M Shoaib Akhtar ◽  
Shazia Taj ◽  
...  
Keyword(s):  
Null Hypothesis ◽  
Well Being ◽  
Military Hospital ◽  
P Value ◽  
Depression And Anxiety ◽  
Psychological Well Being ◽  
Heart Patients ◽  
Significant Difference ◽  
Relationship Of ◽  
The Relationship

The study was designed to investigate the relationship of psychological well-being with depression and anxiety among heart patients.1 For this purpose, a sample of 200 patients was taken, including 100 men and 100 women, educated uneducated, employed and unemployed volunteers. The sample was taken from Nishtar Hospital, Combined military hospital and other private hospitals in Multan. The age range from 25 to 60 (mean age 43.085).2,3 Objective: To observe the effect of demographic variables (age, education, gender and source of finance) on psychological well-being and depression, anxiety in heart patients. Methods: 1. Low psychological well-being would be positively correlated with depression and anxiety. 2. Older age (above 50) heart patients would have low sense of psychological well-being as compared to younger age (above 35) heart patients. Results: Different statistical procedures were used to determine the relationship of psychological well-being with depression and anxiety among heart patients. Correlation was computed to see the relationship among variables. It was found that there is negative correlation between psychological well-being with depression and anxiety. Since the p-value in less than α (p-value < 0.01), so we reject null hypothesis Ho, and conclude that low psychological well-being is positively correlated with depression and anxiety. Conclusion: This study also finds out important findings on the role of stresses, feeling of worthlessness in depression and anxiety disorder. It is concluded that psychological well-being, depression and anxiety are not significant correlated with each other. Source of income or job and sex of the heart patients have significant effect on psychological well being. However there is no significant difference between men and women regarding the rate of depression and anxiety. Keywords: P-Value, Correlation, Null Hypothesis , Depression

scholarly journals Short-term clinical outcomes of 42 cases of arthroscopic meniscectomy for discoid lateral meniscus tears

2012 ◽  
Vol 4 (5) ◽  
pp. 807-810
Author(s):  
HONG CAO ◽  
YING ZHANG ◽  
WEI QIAN ◽  
XIN-HUA CHENG ◽  
YONG KE ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Lateral Meniscus ◽  
Discoid Lateral Meniscus ◽  
Short Term ◽  
Meniscus Tears ◽  
Arthroscopic Meniscectomy

Effects of arthroscopic meniscectomy on the long-term prognosis for the discoid lateral meniscus

2007 ◽  
Vol 15 (11) ◽  
pp. 1315-1320 ◽  
Author(s):  
Sung-Jae Kim ◽  
Yong-Min Chun ◽  
Jae-Hoon Jeong ◽  
Sang-Wook Ryu ◽  
Kyung-Soo Oh ◽  
...  
Keyword(s):  
Lateral Meniscus ◽  
Discoid Lateral Meniscus ◽  
Arthroscopic Meniscectomy ◽  
Long Term Prognosis

scholarly journals Relationship of Population Configuration with Enrollment of Children at Primary Level of District Bannu

2019 ◽  
Vol IV (I) ◽  
pp. 21-30
Author(s):  
Malik Amer Atta ◽  
Qayyum Nawaz ◽  
Hafiz Azmat Ullah
Keyword(s):  
Population Growth ◽  
Primary School ◽  
Null Hypothesis ◽  
Strong Relationship ◽  
Questionnaire Data ◽  
Population Composition ◽  
Primary Level ◽  
Relationship Of ◽  
The Relationship ◽  
Urban Male

The Problem under study was the relationship of population composition with enrollment of children at primary level. The study was significant because we can make forecasting of educational plans keeping in view the relationship. All the Primary School of the District Bannu was included in the population for the study. The sample was 05 Urban Male School, 05 Urban Female School, 05 Rural Male School, and 05 Rural Female School. The research instrument was a questionnaire. Through this questionnaire data was collected regarding schools from 2013 to 2019 in different classes. The null hypothesis that there is no relationship between the population composition and enrollment was tested. The result shows that the correlation between the enrollment and the population growth is 0.98. It is high correlation which indicates the strong relationship between the number of enrollment of student and population

scholarly journals Relationship of Population Configuration with Enrollment of Children at Primary Level of District Bannu

2020 ◽  
Vol V (II) ◽  
pp. 35-44
Author(s):  
Malik Amer Atta ◽  
Qayyum Nawaz ◽  
Hafiz Azmat Ullah
Keyword(s):  
Population Growth ◽  
Primary School ◽  
Null Hypothesis ◽  
Strong Relationship ◽  
Questionnaire Data ◽  
Population Composition ◽  
Primary Level ◽  
Relationship Of ◽  
The Relationship ◽  
Urban Male

The Problem under study was the relationship of population composition with enrollment of children at primary level. The study was significant because we can make forecasting of educational plans keeping in view the relationship. All the Primary School of the District Bannu was included in the population for the study. The sample was 05 Urban Male School, 05 Urban Female School, 05 Rural Male School, and 05 Rural Female School. The research instrument was a questionnaire. Through this questionnaire data was collected regarding schools from 2013 to 2019 in different classes. The null hypothesis that there is no relationship between the population composition and enrollment was tested. The result shows that the correlation between the enrollment and the population growth is 0.98. It is high correlation which indicates the strong relationship between the number of enrollments of student and population

scholarly journals Multiple correlation-regression analysis of the impact of major factors on oil production

2021 ◽  
Vol 258 ◽  
pp. 12013
Author(s):  
Klara Gabdrakhmanova ◽  
Gulnara Izmailova ◽  
Lilia Samigullina ◽  
Muhammad Majidov
Keyword(s):  
Regression Analysis ◽  
Oil Recovery ◽  
Oil Companies ◽  
Correlation And Regression Analysis ◽  
Direct Measurements ◽  
Major Factors ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship ◽  
Relevant Factors

This article discusses the multiple regression analysis techniques to determine the effectiveness of the factors used. The study examines the various relationships between the elements. It is important to identify which factor will be the most important when selecting wells to determine the amount of oil recovery. Nowadays, the most important problem in the fields of Tatarstan and Bashkortostan is the depletion of deposits. To maintain the profitability of mining companies, therefore, the issue of preparing new reserves remains relevant. This process involves high costs and risks. For a more reliable picture, it is crucial to determine the most relevant factors. The use of the triad of studies proposed by the authors makes it possible to more reliably determine the effectiveness of oil companies. The initial data are direct measurements and methods of mathematical statistics that allow more accurate predictions. Statistical analysis made it possible to identify the parameters on which the effectiveness of the factors depends. In domestic practice, the assessment of resources and reserves of hydrocarbons is usually made by deterministic methods, while abroad the statistical method is used. When studying the relationships between objects, the analyst should be interested not only in the presence and quantitative assessment of the relations but also in the form and relationship of the effective and factor characteristics, its analytical expression. Correlation and regression analysis help to solve these problems. Correlation analysis aims to measure the tightness of the relationship between the varying variables and to evaluate the factors that have the greatest impact on the resulting trait. Regression analysis is designed to select the form of the relationship, to determine the calculated values of the dependent variable (the effective feature) [1]. For the factor analysis, we used data on the oil industry published in the annual statistical collections of Rosstat, as well as specialized periodicals for ten years.

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