scholarly journals Differences in the Flexion and Extension Phases during Kneeling Investigated by Kinematic and Contact Point Analyses: A Cross-sectional Study

2021 ◽  
Author(s):  
Yusuke Nakazoe ◽  
Akihiko Yonekura ◽  
Hiroyuki Takita ◽  
Takeshi Miyaji ◽  
Narihiro Okazaki ◽  
...  
Keyword(s):  
Knee Flexion ◽  
Contact Point ◽  
Knee Extension ◽  
Cross Sectional Study ◽  
Extension Phase ◽  
3D Registration ◽  
Cross Sectional ◽  
Registration Method ◽  
Computed Tomography Images ◽  
Flexion And Extension

Abstract Background: Kneeling is necessary for certain religious and ceremonial occasions, crouching work, and gardening, which many people take part in worldwide. However, there have been few reports regarding kneeling activities. The purpose of this study was to clarify the kinematics of kneeling.Methods: The subjects were 15 healthy young males. Kneeling activity was analysed within a knee flexion angle from 100° to maximum flexion (maxflex, mean ± SD = 161.3 ± 3.2°). The kinematic and contact point (CP) analyses were performed using a 2D/3D registration method, in which a 3D bone model created from computed tomography images was matched to knee lateral fluoroscopic images and analysed on a personal computer.Results: In the kinematic analysis, the femur translated 37.5 mm posteriorly and rotated 19.8° externally relative to the tibia during the knee flexion phase. During the knee extension phase, the femur translated 36.4 mm anteriorly, which was almost the same amount as in the knee flexion phase. However, the femur rotated only 7.4° internally during the knee extension phase. In the CP analysis, the amount of anterior translation of the CP in the knee extension phase was greater in the medial CP and smaller in the lateral CP than that of posterior translation in the knee flexion phase.Conclusions: In kneeling, there was a difference in the rotational kinematics between the flexion phase and the extension phase. The kinematic difference between the flexion and extension phases may have some effect on the meniscus and articular cartilage.

scholarly journals Joint-Specific Play Controller for Upper Extremity Therapy: Feasibility Study in Children With Wrist Impairment

2016 ◽  
Vol 96 (11) ◽  
pp. 1773-1781
Author(s):  
Bethany J. Wilcox ◽  
Megan M. Wilkins ◽  
Benjamin Basseches ◽  
Joel B. Schwartz ◽  
Karen Kerman ◽  
...  
Keyword(s):  
Upper Extremity ◽  
Computer Games ◽  
Average Frequency ◽  
Cross Sectional Study ◽  
Wrist Flexion ◽  
Motor Impairments ◽  
Cross Sectional ◽  
Play Activity ◽  
Play Session ◽  
Flexion And Extension

Abstract Background Challenges with any therapeutic program for children include the level of the child's engagement or adherence. Capitalizing on one of the primary learning avenues of children, play, the approach described in this article is to develop therapeutic toy and game controllers that require specific and repetitive joint movements to trigger toy/game activation. Objective The goal of this study was to evaluate a specially designed wrist flexion and extension play controller in a cohort of children with upper extremity motor impairments (UEMIs). The aim was to understand the relationship among controller play activity, measures of wrist and forearm range of motion (ROM) and spasticity, and ratings of fun and difficulty. Design This was a cross-sectional study of 21 children (12 male, 9 female; 4–12 years of age) with UEMIs. Methods All children participated in a structured in-clinic play session during which measurements of spasticity and ROM were collected. The children were fitted with the controller and played with 2 toys and 2 computer games for 5 minutes each. Wrist flexion and extension motion during play was recorded and analyzed. In addition, children rated the fun and difficulty of play. Results Flexion and extension goal movements were repeatedly achieved by children during the play session at an average frequency of 0.27 Hz. At this frequency, 15 minutes of play per day would result in approximately 1,700 targeted joint motions per week. Play activity was associated with ROM measures, specifically supination, but toy perception ratings of enjoyment and difficulty were not correlated with clinical measures. Limitations The reported results may not be representative of children with more severe UEMIs. Conclusions These outcomes indicate that the therapeutic controllers elicited repetitive goal movements and were adaptable, enjoyable, and challenging for children of varying ages and UEMIs.

scholarly journals Parameters for gait rehabilitation in Tropical Spastic Paraparesis: cross sectional study

2019 ◽  
Vol 9 (1) ◽  
pp. 18-27 ◽  
Author(s):  
Sandra Corradini ◽  
Renata de Sousa Mota ◽  
Maíra Macêdo ◽  
Marina Brasil ◽  
Selena Márcia Dubois-Mendes ◽  
...  
Keyword(s):  
Plantar Flexion ◽  
Spastic Paraparesis ◽  
Cross Sectional Study ◽  
Tropical Spastic Paraparesis ◽  
Foot Drop ◽  
Sectional Study ◽  
Cross Sectional ◽  
Time Asymmetry ◽  
Swing Time ◽  
Flexion And Extension

INTRODUCTION: The gait in people with HTLV-1 associated myelopathy or tropical spastic paraparesis (HAM / TSP) is little known. OBJECTIVE: To evaluate the kinematic profile of gait in people with HAM/TSP. METHODS: A cross-sectional study with 25 people with HAM/TSP and 25 healthy participants. Spatiotemporal and angular data from filming of gait were submitted to kinematic analysis using CVMob software. The gait of partipants with HAM/TSP was analized quantitatively through t Student test (alpha 5% and Power of 80%). The project was approved by Ethical Committee of the Bahiana School of Medicine and Public Health with CAAE 13568213.8.0000.5544. RESULTS: The HAM/TSP group showed significant changes in two different domains of biomechanical gait analysis when compared to healthy controls. The angular variables showed increased trunk inclination, flexion and extension (p<0.05); increased hip flexion and decreased hip extension (p<0.05); decreased knee flexion and extension (p<0.05); decreased ankle dorsi and plantar flexion (p<0.05). Range of Motion was also reduced in all those joints. The spatiotemporal variables showed decreased stride length and increased stride time and speed gait cycle (p<0.001). Those changes point out to reduction in joint amplitudes of hip, knee and ankle, changes in support base and double support time asymmetry between right and left sides, reduction of pre-swing time, hip lift in the mid-swing, and foot drop throughout the swing. CONCLUSION: People with HAM/TSP have gait characterized by reduction in joint amplitudes of hip, knee and ankle, asymmetry between right and left sides and reduction of pre-swing time, hip lift in the mid-swing, and foot drop throughout the swing.

scholarly journals Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Andre Luiz Ferreira Costa ◽  
Aline Kataki Paixão ◽  
Bianca Costa Gonçalves ◽  
Celso Massahiro Ogawa ◽  
Thiago Martinelli ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
Type I ◽  
Type Ii ◽  
Sectional Study ◽  
Cross Sectional ◽  
Computed Tomography Images ◽  
The Mean

This study aimed to investigate the olfactory fossa according to the Keros classification using cone beam computed tomography. This cross-sectional study analysed cone beam computed tomography images selected from a database belonging to a radiology centre. The scans of 174 healthy patients were analysed by using the Xoran software. Gender, age, and side were correlated with the Keros classification. The mean age of the 174 patients was 45.3 years. The most prevalent Keros classification was type II (65.52%), followed by type III (20.69%) and type I (13.79%). No significant differences were found between Keros classification and the variables age, right side (pvalue = 0.4620), and left side (pvalue = 0.5709). There were also no significant differences between gender and the variables right side (pvalue = 0.1421) and left side (pvalue = 0.2136). Based on these results, we suggest that cone beam computed tomography can be recommended for analysis of the anterior skull base. Keros type II was the most prevalent type in our sample.

Lower-Extremity Isokinetic Strength Profiling in Professional Rugby League and Rugby Union

2014 ◽  
Vol 9 (2) ◽  
pp. 358-361 ◽  
Author(s):  
Scott R. Brown ◽  
Matt Brughelli ◽  
Peter C. Griffiths ◽  
John B. Cronin
Keyword(s):  
Lower Extremity ◽  
Knee Flexion ◽  
Peak Torque ◽  
Rugby League ◽  
Knee Extension ◽  
Rugby Union ◽  
Joint Torque ◽  
Cross Sectional ◽  
Hip Strength ◽  
Hip Extension

Purpose:While several studies have documented isokinetic knee strength in junior and senior rugby league players, investigations of isokinetic knee and hip strength in professional rugby union players are limited. The purpose of this study was to provide lower-extremity strength profiles and compare isokinetic knee and hip strength of professional rugby league and rugby union players.Participants:32 professional rugby league and 25 professional rugby union players.Methods:Cross-sectional analysis. Isokinetic dynamometry was used to evaluate peak torque and strength ratios of the dominant and nondominant legs during seated knee-extension/flexion and supine hip-extension/flexion actions at 60°/s.Results:Forwards from both codes were taller and heavier and had a higher body-mass index than the backs of each code. Rugby union forwards produced significantly (P < .05) greater peak torque during knee flexion in the dominant and nondominant legs (ES = 1.81 and 2.02) compared with rugby league forwards. Rugby league backs produced significantly greater hip-extension peak torque in the dominant and nondominant legs (ES = 0.83 and 0.77) compared with rugby union backs. There were no significant differences in hamstring-to-quadriceps ratios between code, position, or leg. Rugby union forwards and backs produced significantly greater knee-flexion-to-hip-extension ratios in the dominant and nondominant legs (ES = 1.49–2.26) than rugby union players.Conclusions:It seems that the joint torque profiles of players from rugby league and union codes differ, which may be attributed to the different demands of each code.

Maximum Power During Vertical Jump and Isometric Knee Extension Torque Alter Mobility Performance: A Cross-Sectional Study of Healthy Individuals

PM&R ◽  
2015 ◽  
Vol 8 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Atsuhiro Tsubaki ◽  
Masayoshi Kubo ◽  
Ryosaku Kobayashi ◽  
Hirofumi Jigami ◽  
Kazuhiro Sugawara ◽  
...  
Keyword(s):  
Vertical Jump ◽  
Knee Extension ◽  
Cross Sectional Study ◽  
Maximum Power ◽  
Healthy Individuals ◽  
Sectional Study ◽  
Cross Sectional ◽  
Mobility Performance ◽  
Isometric Knee Extension

scholarly journals Alteration of Screw-home Movement in Patients With Knee Osteoarthritis: A Cross-sectional Study

2020 ◽  
Author(s):  
Jeongwoo Jeon ◽  
Dongyeop Lee ◽  
Jaeho Yu ◽  
Jinseop Kim ◽  
Sang Hoon Lhee ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Knee Extension ◽  
Cross Sectional Study ◽  
Measurement Unit ◽  
Tibial Rotation ◽  
Sectional Study ◽  
Control Groups ◽  
Cross Sectional ◽  
Knee Oa ◽  
And Control

Abstract Background: Tibial rotation accompanying sagittal movement contains the phenomenon of screw-home movement of the knee, which plays an important role in knee stability during extension. This study aimed to investigate the alteration of screw-home movement in patients with knee osteoarthritis (OA).Methods: Participants (n =67) in this cross-sectional study were outpatients in the department of orthopedics of a general hospital and included patients with knee OA (n=31) and asymptomatic control subjects (n=36).Knee kinematic data were measured using an inertial measurement unit. The total tibial rotation was obtainedduring knee sagittal movement. The acquired angle of tibial rotation was divided into four periodseach extension and flexion. The total tibial rotation and the variation of each period were compared between the OA and control groups.Results: Significant differences arose between the OA and control groups in the total tibial rotation during knee extension and flexion(P< 0.001).The variation of tibial rotation was also significantly different between groups for all periods (P< 0.001; knee extensionat 70° to 45°,P = 0.014).Conclusions: We found a reduction in the total tibial rotation and loss of the screw-home movement in the unloaded OA knee. To normalize the screw-home movement, it is necessary to promote proper articular movement of the knee joint and suppress the hyperexcitability of the medial muscles.

scholarly journals Comparing infrastructure of anganwadi centres under integrated child development services of urban and rural Bangalore: a cross sectional study

2019 ◽  
Vol 6 (10) ◽  
pp. 4510
Author(s):  
Abhijnana G. ◽  
Selvi Thangaraj ◽  
Ranganath T. S. ◽  
Vishwanath .
Keyword(s):  
Child Development ◽  
Contact Point ◽  
Cross Sectional Study ◽  
Quality Service ◽  
Cross Sectional ◽  
Medical College ◽  
Interview Method ◽  
Toilet Facility ◽  
Field Practice ◽  
Structured Questionnaire

Background: Anganwadi centres under integrated child development services is the largest Project in India to improve not only child health but reproductive, maternal and adolescent health. The aim of the present study is to compare the infrastructure of urban and rural anganwadi which is one of the basic need to provide quality services.Methods: A total of 30 anganwadi centres are involved in our study in which 20 are from rural and 10 are from urban field practice area of Department of Community Medicine, Bangalore Medical College and Research Institute, Bangalore. This study employed interview method with anganwadi worker’s and observation of anganwadi centre using pre-designed, semi structured questionnaire and checklist.Results: 85% of rural and 60% urban anganwadi centres have their own buildings to carry out the services. 20% of rural anganwadi centres lack fixed name boards compared to urban anganwadi centres. 55% of rural anganwadi centres and 90% of urban anganwadi centres lack separate storage for raw food materials. 15% of rural anganwadi centres lack functional toilet facility. 40% of rural anganwadi centres lack functional weighing machine.Conclusions: Anganwadi centres are remote contact point of health care system within the community. The infrastructure of anganwadi centre such as type of building, space for cooking and activities, availability of functional equipments ensure the quality service deliveries which in turn are enhanced by timely supervision from higher authorities.

The Importance of Functional Hamstring/Quadriceps Ratios in Knee Osteoarthritis

2020 ◽  
Vol 29 (7) ◽  
pp. 866-870
Author(s):  
Özlem Aslan ◽  
Elif Balevi Batur ◽  
Jale Meray
Keyword(s):  
Patient Group ◽  
Critical Role ◽  
Peak Torque ◽  
Knee Extension ◽  
Cross Sectional Study ◽  
Control Group ◽  
Cross Sectional ◽  
Knee Oa ◽  
Hamstring Muscles ◽  
Grade 3

Context: Osteoarthritis (OA) is the most common chronic joint condition. Muscle dysfunction plays a critical role in the pathogenesis of knee OA. Objective: It has been suggested that the agonist–antagonist strength relationship for the knee may be better described by a functional hamstring/quadriceps (H/Q) ratio (Hconcentric/Qeccentric: the representative of knee flexion and Qeccentric/Hconcentric: the representative of knee extension). Therefore, in this study, the authors aimed to investigate this ratio and its importance for knee OA. Design: Cross-sectional study. Setting: Research clinic. Patients or Other Participant(s): Twenty healthy women and 20 women with grade 2 or grade 3 primer knee OA between the age of 50 and 80 years were included in this study. Intervention(s): Concentric and eccentric peak torque of quadriceps and hamstring muscles were evaluated for all individuals in patient and control groups with a Cybex isokinetic device. Functional H/Q ratio is calculated manually. Main Outcome Measure(s): Functional H/Q torque ratios were analyzed between the patients with OA and healthy individuals by using the isokinetic system. Results: The values of peak torque of hamstring concentric and eccentric and quadriceps concentric for the patient group were significantly lower than the control group (P < .05). No statistically important difference was found for quadriceps eccentric peak torque between 2 groups (P > .05). H/Q ratio for extension in the patient group was significantly higher than the control group (P < .05), whereas the H/Q ratio for flexion in the patient group was significantly lower than the control group (P < .05). Conclusion: This study showed the weakness of both quadriceps and hamstring muscles in patients with knee OA. The combination of functional H/Q ratio with hamstring and quadriceps muscles concentric and eccentric strength values can help to analyze the knee functions and develop preventive-therapeutic approaches for knee OA.

ACCELEROMETER-DETERMINED INTENSITY AND DURATION OF HABITUAL PHYSICAL ACTIVITY AND WALKING PERFORMANCE IN WELL-FUNCTIONING MIDDLE-AGED AND OLDER WOMEN: A CROSS-SECTIONAL STUDY

2019 ◽  
pp. 1-5
Author(s):  
R.S. Thiebaud ◽  
T. Abe ◽  
M. Ogawa ◽  
J.P. Loenneke ◽  
N. Mitsukawa
Keyword(s):  
Physical Activity ◽  
Older Women ◽  
Walking Speed ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Knee Extension ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Knee Extension Strength ◽  
Walking Speeds

ackground: The association of physical activity (PA) intensities and duration spent in those activities with different walking tasks remains unclear. Objectives: To examine the association between the duration of PA intensities and three walking speeds (usual walking speed, maximal walking speed and zig-zag walking speed). Design: Multiple linear regression analysis was used to estimate the association of age, BMI, maximum knee extension strength, light PA, moderate PA and vigorous PA with walking speeds. Setting: University lab. Participants: Eighty-six older women (67 ± 7 years). Measurements: PA was measured for 30 consecutive days using the Lifecorder-EX accelerometer. Exercise intensity was categorized as light (levels 1-3), moderate (levels 4-6) and vigorous (levels 7-9) based on the manufacturer algorithms. Usual straight walking speed (20 m), maximal straight walking speed (20 m) and zig-zag walking speed tests (10 m) were performed by each participant. Results: For the usual straight walking speed model (R2 = 0.296, SEE = 0.15 m/s), the significant predictors were BMI, knee extension strength, light PA and vigorous PA. For the maximal straight walking speed model (R2 = 0.326, SEE = 0.20 m/s), only age was a significant predictor. For the zig-zag walking speed model (R2=0.417, SEE = 0.14 m/s), age and maximum knee strength were significant predictors in the model. Conclusions: Overall, the results of this study suggest that vigorous PA and maximal knee extension strength are two important factors that are associated with different walking speeds in older women.

Sign in / Sign up

Export Citation Format

Share Document