A New Factor Predicting Excessive Femoral Anteversion in Patients with Recurrent Patellar Dislocation

Abstract Purpose Determining a new imaging method on full-leg standing lower limb radiographs to predict excessive femoral anteversion in patients with patellar dislocation.Methods This study included 119 patients with patellar dislocation from January 2014 to January 2021. The femoral anteversion and tibial torsion were measured by CT scanning. The medial condylar angle was measured by the full-leg standing lower limb radiographs. Pearson correlation coefficient was used to evaluate the correlation between rotation parameters and medial condylar angle.Results Included patients were divided into DFO group and control group according to whether they received derotational femoral osteotomy (DFO) operation or not. There were significant statistical differences in femoral anteversion, tibial torsion and medial condylar angle between DFO group and control group (P < 0.05). This showed that there was a smaller medial condylar angle in patients undergoing DFO operation. Correlation analysis showed that the values of femoral anteversion were significantly correlated with medial condylar angle (r= -0.719, P < 0.001). Conclusion This study showed that medial condylar angle had a negative correlation with excessive femoral anteversion on the full-leg standing lower limb radiographs. The medial condylar angle can be a good predictor of femoral anteversion and can be used to guide the performance of DFO to treat patellar dislocation in clinical practice.

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Hindlimb torsional alignment changes in growing rabbits after patellar dislocation

10.21203/rs.3.rs-46809/v4 ◽

2021 ◽

Author(s):

Jinghui Niu ◽

Qi Qi ◽

Kang Piao ◽

Kuo Hao ◽

Iftekhar Sharif ◽

...

Keyword(s):

Patellar Dislocation ◽

Three Dimensional ◽

Control Group ◽

Tibial Torsion ◽

Lateral Dislocation ◽

Post Surgery ◽

Femoral Version ◽

Torsional Malalignment ◽

And Control ◽

Experimental Group

Abstract Background: Torsional malalignment has been considered as a risk factor for patellar dislocation. But the influence of patellar dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsional alteration of the hindlimb occurs after patellar dislocation in growing rabbits. Methods: In the present study, 30 one-month-old rabbits were included. The experimental group consisted of 30 left knees of rabbits which underwent patellar lateral dislocation. The control group consisted of 30 right knees of the rabbits which no surgical procedure was performed. The Computed Tomography (CT) scan was performed after the surgery and at the point the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and the control group. Results: After the surgery, the femoral version and tibial torsion in the experimental and control group were not significantly different. However, 5 months after surgery, the angle of femoral version in the experimental group (-5.50 ± 6.13°) was significantly different from that in the control group (-10.90 ± 4.74°) (P < 0.05). But the angle of tibial torsion in the experimental group (7.17 ± 7.25°) and control group (4.47 ± 6.34°) were not significantly different (P = 0.144). Conclusion: From this study, patellar dislocation can lead to alteration of femoral version in growing rabbits. So patellar dislocation may affect on lower extremity alignment. These findings may develop pathology and etiology of patellar dislocation.

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Hindlimb torsional alignment changes in growing rabbits after patellar dislocation

BMC Musculoskeletal Disorders ◽

10.1186/s12891-021-03977-4 ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Jinghui Niu ◽

Qi Qi ◽

Kang Piao ◽

Kuo Hao ◽

Iftekhar Sharif ◽

...

Keyword(s):

Patellar Dislocation ◽

Three Dimensional ◽

Control Group ◽

Tibial Torsion ◽

Lateral Dislocation ◽

Post Surgery ◽

Femoral Version ◽

Torsional Malalignment ◽

And Control ◽

Experimental Group

Abstract Background Torsional malalignment has been considered as a risk factor for patellar dislocation. But the influence of patellar dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsional alteration of the hindlimb occurs after patellar dislocation in growing rabbits. Methods In the present study, 30 one-month-old rabbits were included. The experimental group consisted of 30 left knees of rabbits which underwent patellar lateral dislocation. The control group consisted of 30 right knees of the rabbits which no surgical procedure was performed. The Computed Tomography (CT) scan was performed after the surgery and at the point the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and the control group. Results After the surgery, the femoral version and tibial torsion in the experimental and control group were not significantly different. However, 5 months after surgery, the angle of femoral version in the experimental group (-5.50 ± 6.13°) was significantly different from that in the control group (−10.90 ± 4.74°) (P < 0.05). But the angle of tibial torsion in the experimental group (7.17 ± 7.25°) and control group (4.47 ± 6.34°) were not significantly different (P = 0.144). Conclusions From this study, patellar dislocation can lead to alteration of femoral version in growing rabbits. So patellar dislocation may affect on lower extremity alignment. These findings may develop pathology and etiology of patellar dislocation.

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The torsional alignment changed significantly of hindlimb in growing rabbits after patellar dislocation

10.21203/rs.3.rs-46809/v2 ◽

2020 ◽

Author(s):

Jinghui Niu ◽

Qi Qi ◽

Kang Piao ◽

Kuo Hao ◽

Iftekhar Sharif ◽

...

Keyword(s):

Patellar Dislocation ◽

Three Dimensional ◽

Control Group ◽

Tibial Torsion ◽

Lateral Dislocation ◽

Post Surgery ◽

Femoral Version ◽

Torsional Malalignment ◽

And Control ◽

Experimental Group

Abstract Background Torsional malalignment has been considered as a risk factor for patellar dislocation. But the influence of patellar dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsion alteration of the hindlimb occur after patellar dislocation in growing rabbits. Methods In the present study, 30 one-month old rabbits were included. The experimental group consists of 30 left knees of rabbits and were underwent patellar lateral dislocation. And the control group consists of 30 right knees and no surgical procedure was performed. The Computed Tomography (CT) scan was performed on each knee when the surgery was finished and at the time the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and control group. Results The femoral version and tibia torsion in the experimental and control group immediately after surgery were not significantly different. However, 5 months after surgery, the femoral version angle of the experimental group (-5.50±6.13°) was significantly different with that of the experimental group (-10.90±4.74°)( P < 0.05). But the tibia torsion angle in the experimental group (7.17±7.25°) and control group (4.47±6.34°) were not significantly different ( P = 0.144). Conclusion From this study, patellar dislocation can lead to alteration of femoral version in growing rabbits. This may indicate the early treatment for patellar dislocation in children is particularly important to avoid torsional malalignment in the future. These findings may develop pathology and etiology of patellar dislocation.

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Hindlimb torsional alignment changes in growing rabbits after patellar dislocation

10.21203/rs.3.rs-46809/v3 ◽

2020 ◽

Author(s):

Jinghui Niu ◽

Qi Qi ◽

Kang Piao ◽

Kuo Hao ◽

Iftekhar Sharif ◽

...

Keyword(s):

Patellar Dislocation ◽

Three Dimensional ◽

Control Group ◽

Tibial Torsion ◽

Lateral Dislocation ◽

Post Surgery ◽

Femoral Version ◽

Torsional Malalignment ◽

And Control ◽

Experimental Group

Abstract Background: Torsional malalignment has been considered as a risk factor for patellar dislocation. But the influence of patellar dislocation for torsional alignment development remains unknown. The present study aims to investigate whether the torsional alteration of the hindlimb occurs after patellar dislocation in growing rabbits.Methods: In the present study, 30 one-month-old rabbits were included. The experimental group consisted of 30 left knees of rabbits which underwent patellar lateral dislocation. The control group consisted of 30 right knees of the rabbits which no surgical procedure was performed. The Computed Tomography (CT) scan was performed after the surgery and at the point the rabbits were skeletal mature (5 months post-surgery). The angles of femoral version and tibial torsion were measured using a three-dimensional method and analyzed between the experimental group and the control group.Results: After the surgery, the femoral version and tibial torsion in the experimental and control group were not significantly different. However, 5 months after surgery, the angle of femoral version in the experimental group (-5.50 ± 6.13°) was significantly different from that in the control group (-10.90 ± 4.74°) (P < 0.05). But the angle of tibial torsion in the experimental group (7.17 ± 7.25°) and control group (4.47 ± 6.34°) were not significantly different (P = 0.144).Conclusion: From this study, patellar dislocation can lead to alteration of femoral version in growing rabbits. So patellar dislocation may affect on lower extremity alignment. These findings may develop pathology and etiology of patellar dislocation.

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Scrambled Cloze Procedure: Does It Influence EFL Learners’ Reading Comprehension and Writing Performance?

Journal of Language Teaching and Research ◽

10.17507/jltr.1105.18 ◽

2020 ◽

Vol 11 (5) ◽

pp. 815

Author(s):

Jahanbakhsh Nikoopour ◽

Mino Bargnil

Keyword(s):

Reading Comprehension ◽

Pearson Correlation ◽

Control Group ◽

Writing Performance ◽

Efl Learners ◽

Reading And Writing ◽

Significant Difference ◽

Cloze Procedure ◽

And Control ◽

Experimental Group

The present study investigated the effect of using scrambled cloze procedure on reading and writing among intermediate EFL learners. To fulfill the purpose of the study, 60 participants were tested on a PET test, from whom 48 homogeneous participants were selected and assigned randomly to two groups of 25 and 23, as experimental and control group. Then, both groups were given a pre-test of writing and reading comprehension. During 14 sessions, the experimental group were provided with scrambled cloze samples and tasks while practicing paragraph writing and reading, whereas the control group did not, while they were practicing paragraph writing and reading. At the end, the two groups were tested in reading comprehension and writing, based on a posttest. Two raters scored the writing samples collected from two groups in the pre and posttest. Pearson correlation was used to compute the inter-rater reliability. The results showed the experimental group outperformed the control group in paragraph writing and reading comprehension. However, it was found that gender did not make a significant difference in reading comprehension and writing performance.

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Comparison of bi-exponential and mono-exponential models of diffusion-weighted imaging for detecting active sacroiliitis in ankylosing spondylitis

Acta Radiologica ◽

10.1177/0284185117722811 ◽

2017 ◽

Vol 59 (4) ◽

pp. 468-477 ◽

Cited By ~ 5

Author(s):

Haitao Sun ◽

Kai Liu ◽

Hao Liu ◽

Zongfei Ji ◽

Yan Yan ◽

...

Keyword(s):

Diffusion Coefficient ◽

Ankylosing Spondylitis ◽

Diffusion Weighted Imaging ◽

Active Group ◽

Control Group ◽

Imaging Method ◽

Control Groups ◽

Diffusion Weighted ◽

Significant Difference ◽

And Control

Background There has been a growing need for a sensitive and effective imaging method for the differentiation of the activity of ankylosing spondylitis (AS). Purpose To compare the performances of intravoxel incoherent motion (IVIM)-derived parameters and the apparent diffusion coefficient (ADC) for distinguishing AS-activity. Material and Methods One hundred patients with AS were divided into active (n = 51) and non-active groups (n = 49) and 21 healthy volunteers were included as control. The ADC, diffusion coefficient ( D), pseudodiffusion coefficient ( D*), and perfusion fraction ( f) were calculated for all groups. Kruskal–Wallis tests and receiver operator characteristic (ROC) curve analysis were performed for all parameters. Results There was good reproducibility of ADC /D and relatively poor reproducibility of D*/f. ADC, D, and f were significantly higher in the active group than in the non-active and control groups (all P < 0.0001, respectively). D* was slightly but significant lower in the active group than in the non-active and control group ( P = 0.0064, 0.0215). There was no significant difference in any parameter between the non-active group and the control group (all P > 0.050). In the ROC analysis, ADC had the largest AUC for distinguishing between the active group and the non-active group (0.988) and between the active and control groups (0.990). Multivariate logistic regression analysis models showed no diagnostic improvement. Conclusion ADC provided better diagnostic performance than IVIM-derived parameters in differentiating AS activity. Therefore, a straightforward and effective mono-exponential model of diffusion-weighted imaging may be sufficient for differentiating AS activity in the clinic.

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Effectiveness of the use of the strategy of peers teaching in the treatment of the difficulties of reading aloud in the sixth grade pupils in the province of Hafr al-Batin in Saudi Arabia: فاعلية استخدام استراتيجية تدريس الأقران في علاج صعوبات القراءة الجهرية لدى تلاميذ الصف السادس الابتدائي في محافظة حفر الباطن بالسعودية

المجلة العربية للعلوم ونشر الأبحاث مجلة العلوم التربوية والنفسية ◽

10.26389/ajsrp.p030417 ◽

2017 ◽

Vol 1 (4) ◽

Author(s):

Sultan bin Haif Mohammed Al Harbi

Keyword(s):

Reading Skills ◽

Reading Speed ◽

Pearson Correlation ◽

Reading Aloud ◽

Reading Difficulties ◽

Sixth Grade ◽

Control Group ◽

Service Training ◽

The Difference ◽

And Control

The study aimed at determining the reading difficulties of sixth grade students in Hafr Al-Batin governorate and identifying the effect of using the strategy of peers teaching in the treatment of reading difficulties. The semi-experimental method was used to suit the study objectives. (245) students during the second semester of the academic year 1434/1435 H. The researcher used a test to measure difficulties in reading aloud, a guide for the teacher and learner, and Stkhaddmt arithmetic averages, standard deviations, and stability coefficient alpha Cronbach, and Pearson correlation coefficient, as well as the accompanying analysis of variance (ANCOVA) in the statistical treatments. The results revealed that there was a statistically significant effect at the level of (α 0.05)) for the use of the strategy of teaching peers in the treatment of the difficulties of verbal reading of the recognition and pronunciation and reading speed between the experimental and control groups in the sixth grade pupils. The experimental average was 83.33, the control group average was only 57.64, the difference was statistically significant for the pilot, and the test result for both groups was in the tribal test; in all the verbal reading skills measured by the test 45.37). The most difficult reading skills were found to be the difficulty of pronunciation. The ability of reading speed was the second in terms of difficulty with an arithmetic mean (45.85) , With an average of (53.67). The study recommended a number of recommendations, including attention to the use of effective strategies such as peer education strategy to address the difficulties of reading aloud, especially for the primary stage and its use in treatment plans to address the difficulties of reading aloud and the inclusion of in-service training programs for Arabic teachers on practical topics of the strategy of peers teaching.

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Asymmetry in Paraspinal Muscles as a Predictor of the Development of Pregnancy-Related Low Back and Pelvic Pain: A Prospective Study.

10.21203/rs.3.rs-146929/v1 ◽

2021 ◽

Author(s):

Gong Long ◽

Ma Haoning ◽

Yi Ping ◽

Tan Mingsheng

Keyword(s):

Risk Factors ◽

Pearson Correlation ◽

Mean Value ◽

Paraspinal Muscle ◽

Pelvic Girdle Pain ◽

Control Group ◽

Low Back ◽

Paraspinal Muscles ◽

A Prospective Study ◽

And Control

Abstract Background: The etiology of pregnancy-associated lumbopelvic pain (LPP) is not clear at present. This condition is highly heterogeneous with different development and subtypes, including low back pain (LBP) and pelvic girdle pain (PGP). Paraspinal muscles are of importance to maintain the spine's functional stability, and their weakness participates in the occurrence of LPP. Therefore, this study aims to determine the asymmetry in the paraspinal muscle before pregnancy and evaluating its association with pregnancy-associated LPP.Methods: This was a prospective case-control study conducted from January 2017 and December 2018. 171 subjects (mean age ± SD, 27.4±5.8 years) were finally divided into the LBP group, PGP group, and no LPP group. The mean value of F-CSA's ratio to T-CSA (F/T CSA) was used to determine whether the bilateral paraspinal muscle was asymmetrical. Total muscle CSA (T-CSA), functional CSA (F-CSA), and F/T CSA were measured unilaterally and compared between groups. Logistic regression was performed to determine the risk factors for pregnancy-associated LPP. The Pearson correlation coefficient was performed to test the relationship between asymmetry in F/T-CSA and pain rating.Results: 124 subjects (72.5%) (28.5±5.2 years) had the LPP during the pregnancy. 48 (38.7%) individuals had LBP, and 76 (61.3%) had PGP. A total of 39 (31.5%) women unrecovered from LPP. F/T-CSA was significantly decreased in LBP than those in the PGP group and control group (0.03±0.02 vs. 0.05±0.03 vs. 0.12±0.05, P <0.001). Meanwhile, significant differences were detected in any two groups (all P <0.001). Asymmetry in the paraspinal muscle (adjusted OR=1.5), LBP (adjusted OR=1.6), LPP in a previous pregnancy (adjusted OR=1.4), sick leave≥90 days (adjusted OR=1.2), and heavy labor (adjusted OR=1.2) were risk factors for the unrecovered LPP during pregnancy.Conclusions: Asymmetrical muscular compositions could lead to abnormal biomechanics for the segmental motions. One-lateral-directed physical training and stretching may help decrease the occurrence and severity of this condition.

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Class II correction in orthodontic patients utilizing the Mandibular Anterior Repositioning Appliance (MARA)

The Angle Orthodontist ◽

10.2319/062618-478.1 ◽

2019 ◽

Vol 89 (3) ◽

pp. 404-410 ◽

Cited By ~ 1

Author(s):

Anil Ardeshna ◽

Frank Bogdan ◽

Shuying Jiang

Keyword(s):

Pearson Correlation ◽

Class Ii ◽

Maxillary Incisor ◽

Control Group ◽

Class Ii Malocclusion ◽

Lateral Cephalograms ◽

Orthodontic Patients ◽

Mandibular Anterior Repositioning Appliance ◽

And Control ◽

Lower Molar

ABSTRACT Objectives: To evaluate skeletal and dentoalveolar changes produced by the Mandibular Anterior Repostioning Appliance (MARA) in the treatment of Class II malocclusion in adolescent patients. Materials and Methods: Lateral cephalograms of 24 patients, mean age 12.40 years, with a Class II malocclusion consecutively treated with MARA were compared with a historical control group. Changes were evaluated using the Pancherz superimposition and grid analysis pre- and posttreatment. Independent sample t-test, Mann-Whitney U-test, and Pearson correlation coefficient analysis were performed. Results: Significant differences were seen between the treatment and control groups during the 12 month period. Improvement in Class II relationship in the MARA group resulted from skeletal and dentoalveolar changes. There was a 7-mm molar correction and a 4.7-mm overjet reduction. There was also an increase in the mandibular base of 3.3 mm with the lower molar and incisor coming forward 2.6 mm and 2.2 mm, respectively. No significant headgear effect was shown on the maxilla. The maxillary incisor position remained unchanged, whereas the molar distalized 1.8 mm. The anterior lower facial height had an overall increase of 2.2 mm. Conclusions: The MARA was successful in achieving a Class I molar relationship and reducing the overjet in Class II malocclusions. This was the result of both skeletal and dentoalveolar changes.

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The role of real-time elastosonography in the diagnosis of quadriceps fat pad edema

Acta Radiologica ◽

10.1177/02841851211058279 ◽

2021 ◽

pp. 028418512110582

Author(s):

Emre Nalbant ◽

Hande Nalbant ◽

Nurdan Cay

Keyword(s):

Real Time ◽

Strain Ratio ◽

Control Group ◽

Imaging Method ◽

Study Group ◽

Fat Pad ◽

Mri Findings ◽

Mri Study ◽

And Control

Background Quadriceps fat pad edema (QFPE) is one of the causes of anterior knee pain. Real-time elastosonography (RTE) has been increasingly used in musculoskeletal disorders. Purpose To evaluate the role of RTE in the diagnosis of QFPE. Material and Methods A total of 23 patients with QFPE on magnetic resonance imaging (MRI) (study group) were prospectively compared with 29 patients with normal MRI findings (control group) using RTE. On MRI, the thickness of the quadriceps fat pad (QFP), and on RTE, strain ratio (SR) of QFP were measured and compared between the two groups. Results The study group contained 23 patients (12 men, 11 women; mean age = 41.6 ± 7.0 years) and the control group contained 29 patients (14 men, 15 women; mean age = 42.3 ± 6.1 years). No significant differences were found in terms of mean age and sex between the two groups ( P = 0.70, P = 0.78, respectively). The median thicknesses of the QFPs were 8.10 mm and 6.75 mm in the study and control groups, respectively ( P < 0.001). The median SR values of the study group and control group were found to be 63.20 and 6.24, respectively. The SR values were significantly higher in patients with QFPE ( P < 0.001). Conclusion RTE may be an effective imaging method for evaluating QFPE.

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