scholarly journals Kinematics of lower limbs of healthy Chinese people sitting cross-legged

2013 ◽  
Vol 37 (5) ◽  
pp. 369-374 ◽  
Author(s):  
Hai Zhou ◽  
Anmin Liu ◽  
Dongmei Wang ◽  
Xiangsen Zeng ◽  
San Wei ◽  
...  
Keyword(s):  
Range Of Motion ◽  
External Rotation ◽  
Three Dimensional ◽  
Joint Arthroplasty ◽  
Lower Limbs ◽  
Chinese People ◽  
Functional Rehabilitation ◽  
Kinematic Data ◽  
Baseline Information ◽  
Healthy Chinese

Background:Sitting cross-legged as an activity of daily living and its kinematics have significantly different demands on the arthroplasty of hip and knee, which can be referred in the design of joint arthroplasty.Objectives:The purpose of this study was to obtain the kinematics of the lower limb in Chinese people during cross-legged sitting.Study design:This study identified the necessary requirements for joint arthroplasty to carry out sitting cross-legged activity.Methods:A total of 40 healthy Chinese participants (average age = 23.8 years) performed six cross-legged sitting trials per person. Three-dimensional kinematic data of ankle, knee, and hip joints were collected; the means of the three-dimensional angles of these three joints were calculated.Results:At the hip, the range of motion of the flexion was 101.7°, the abduction reached 43.2°, and the range of motion of the external rotation was 36.4°. At the knee, the range of motion of the flexion was 131.9° and the range of motion of the internal rotation reached 32.4°. At the ankle, the range of motion in three planes was not great.Conclusions:Such motion ranges were likely to result in prosthetic dislocation. The results would provide valuable references for prosthesis design in the Chinese population.Clinical relevanceThe kinematic data of sitting cross-legged activity provided the baseline information for physicians and therapists concerned with the surgical and functional rehabilitation, and offered reference for lower limbs prosthesis designing.

The Three-Dimensional Kinematics and Flexibility Characteristics of the Human Ankle and Subtalar Joints—Part I: Kinematics

1988 ◽  
Vol 110 (4) ◽  
pp. 364-373 ◽  
Author(s):  
Sorin Siegler ◽  
Jie Chen ◽  
C. D. Schneck
Keyword(s):  
Range Of Motion ◽  
Internal Rotation ◽  
Ankle Joint ◽  
Subtalar Joint ◽  
External Rotation ◽  
Three Dimensional ◽  
Lower Limbs ◽  
Helical Axis ◽  
Kinematic Coupling ◽  
Human Ankle

The in-vitro, three dimensional kinematic characteristics of the human ankle and subtalar joint were investigated in this study. The main goals of this investigation were: 1) To determine the range of motion of the foot-shank complex and the associated range of motion of the ankle and subtalar joints; 2) To determine the kinematic coupling characteristics of the foot-shank complex, and 3) To identify the relationship between movements at the ankle and subtalar joints and the resulting motion produced between the foot and the shank. The tests were conducted on fifteen fresh amputated lower limbs and consisted of incrementally displacing the foot with respect to the shank while the motion of the articulating bones was measured through a three dimensional position data acquisition system. The kinematic analysis was based on the helical axis parameters describing the incremental displacements between any two of the three articulating bones and on a joint coordinate system used to describe the relative position between the bones. From the results of this investigation it was concluded that: 1) The range of motion of the foot-shank complex in any direction (dorsiflexion/plantarflexion, inversion/eversion and internal rotation/external rotation) is larger than that of either the ankle joint or the subtalar joint.; 2) Large kinematic coupling values are present at the foot-shank complex in inversion/eversion and in internal rotation/external rotation. However, only a slight amount of coupling was observed to occur in dorsiflexion/plantarflexion.; 3) Neither the ankle joint nor the subtalar joint are acting as ideal hinge joints with a fixed axis of rotation.; 4) Motion of the foot-shank complex in any direction is the result of rotations at both the ankle and the subtalar joints. However, the contribution of the ankle joint to dorsiflexion/plantarflexion of the foot-shank complex is larger than that of the subtalar joint and the contribution of the subtalar joint to inversion/eversion is larger than that of the ankle joint.; 5) The ankle and the subtalar joints have an approximately equal contribution to internal rotation/external rotation movements of the foot-shank complex.

scholarly journals Cycling kinematics in healthy adults for musculoskeletal rehabilitation guidance

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Haeun Yum ◽  
Hyang Kim ◽  
Taeyong Lee ◽  
Moon Seok Park ◽  
Seung Yeol Lee
Keyword(s):  
Sagittal Plane ◽  
External Rotation ◽  
Age Groups ◽  
Three Dimensional ◽  
Healthy Adults ◽  
Postoperative Rehabilitation ◽  
Kinematic Data ◽  
Average Value ◽  
The Right ◽  
Musculoskeletal Rehabilitation

Abstract Background Stationary cycling is commonly used for postoperative rehabilitation of physical disabilities; however, few studies have focused on the three-dimensional (3D) kinematics of rehabilitation. This study aimed to elucidate the three-dimensional lower limb kinematics of people with healthy musculoskeletal function and the effect of sex and age on kinematics using a controlled bicycle configuration. Methods Thirty-one healthy adults participated in the study. The position of the stationary cycle was standardized using the LeMond method by setting the saddle height to 85.5% of the participant’s inseam. The participants maintained a pedaling rate of 10–12 km/h, and the average value of three successive cycles of the right leg was used for analysis. The pelvis, hip, knee, and ankle joint motions during cycling were evaluated in the sagittal, coronal, and transverse planes. Kinematic data were normalized to 0–100% of the cycling cycle. The Kolmogorov-Smirnov test, Mann-Whitney U test, Kruskal-Wallis test, and k-fold cross-validation were used to analyze the data. Results In the sagittal plane, the cycling ranges of motion (ROMs) were 1.6° (pelvis), 43.9° (hip), 75.2° (knee), and 26.9° (ankle). The coronal plane movement was observed in all joints, and the specific ROMs were 6.6° (knee) and 5.8° (ankle). There was significant internal and external rotation of the hip (ROM: 11.6°), knee (ROM: 6.6°), and ankle (ROM: 10.3°) during cycling. There was no difference in kinematic data of the pelvis, hip, knee, and ankle between the sexes (p = 0.12 to 0.95) and between different age groups (p = 0.11 to 0.96) in all anatomical planes. Conclusions The kinematic results support the view that cycling is highly beneficial for comprehensive musculoskeletal rehabilitation. These results might help clinicians set a target of recovery ROM based on healthy and non-elite individuals and issue suitable guidelines to patients.

Kinematics of the Midtarsal Joint During Standing Leg Rotation

2002 ◽  
Vol 92 (2) ◽  
pp. 77-81 ◽  
Author(s):  
Christopher Nester ◽  
Peter Bowker ◽  
Peter Bowden
Keyword(s):  
Range Of Motion ◽  
Three Dimensional ◽  
In Vivo Studies ◽  
Kinematic Data ◽  
Joint Characteristics ◽  
Infrared Cameras ◽  
Cadaver Studies ◽  
Midtarsal Joint ◽  
Invasive Techniques

Building on previous work that was cadaver based or involved invasive techniques, this study quantifies the kinematics of an approximation of the midtarsal joint with a noninvasive method. Three-dimensional kinematic data describing the motion of the forefoot and heel during transverse plane rotation of the leg were collected from 25 subjects by means of reflective markers and four infrared cameras. The motion between these segments was assumed to be the best possible clinical approximation of the midtarsal joint. The kinematic characteristics of the midtarsal joint were described in terms of the range and direction of motion in each cardinal body plane, the ratio of the range of motion in each plane, and the orientation of the axis of rotation. The characteristics of the midtarsal joint changed during the range of motion; thus, multiple axes of rotation could be calculated and joint characteristics were varied among subjects. The results of this in vivo method were generally consistent with those of cadaver studies and invasive in vivo studies. (J Am Podiatr Med Assoc 92(2): 77-81, 2002)

scholarly journals Three-dimensional motion analysis of ten common Asian sitting positions in daily living and factors affect range of hip motions

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Phob Ganokroj ◽  
Jirayu Chaowalitwong ◽  
Pichitpol Kerdsomnuek ◽  
Narumol Sudjai ◽  
Pisit Lertwanich ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Motion Analysis ◽  
External Rotation ◽  
Three Dimensional ◽  
Cross Sectional Study ◽  
Flexion Angle ◽  
Abduction Angle ◽  
Female Group ◽  
Cross Sectional ◽  
Kinematic Data

Abstract Background Sitting involves many activities of daily life and requires most motion in the hip joint. Asians have more hip flexion and external rotation motions than Westerners owing to cultural and lifestyle differences. Being aware of the normal range of hip motion is essential in clinical practice. Limited research has focused on the hip motions of common sitting positions. The objective was to determine the hip motions of 10 common sitting positions, and to determine whether gender or being overweight affects the range of hip motions. Methods An experimental cross-sectional study was conducted to determine hip motions by using a standard, three-dimensional, motion-analysis system. Healthy subjects performed 10 sitting positions during 3 trials. All hip-kinematic data were measured on the dominant leg of each participant, except for the right- and left-monk positions (both hips were analyzed). Density plots were constructed and statistical analyses were performed to detect the differences between groups (male and female; non-overweight and overweight). Results The 48 participants comprised 24 males and 24 females. Most were right-leg dominant (45 participants, 93.8%). Of the 22 participants in the overweight group (body mass index ≥23 kg/m2), 18 (75%) were male. Squatting showed the highest flexion angle (99.7°, 47.3°–122°). Cross-legged sitting had the highest abduction angle (28.9°, 9.9°–45.7°) and the largest external rotation angle (62°, 37.6°–81.7°). In the female group, there were trends toward a greater flexion angle (4 out of 10 sitting positions) and a smaller abduction angle (6 out of 9 positions), with P values < 0.05. As to body weight, the overweight participants had a smaller flexion angle but a greater abduction angle, with 5 out of 9 positions having a P value < 0.05. Kinematic data of the transverse plane revealed that the heterogeneity of the rotational angles depended on the sitting position. Conclusions This study provided the functional hip motions of common Asian sitting positions. The kinematic data can be utilized in clinical practice as reference values to determine safe positions. Gender and being overweight affected the hip angles in the sagittal and frontal planes. Trial registration Number TCTR20181021004, retrospectively registered at the Thai Clinical Trials Registry (http//:www.clinicaltrials.in.th).

scholarly journals A Correlational Analysis of Shuttlecock Speed Kinematic Determinants in the Badminton Jump Smash

2020 ◽  
Vol 10 (4) ◽  
pp. 1248 ◽  
Author(s):  
Mark King ◽  
Harley Towler ◽  
Romanda Dillon ◽  
Stuart McErlain-Naylor
Keyword(s):  
Wrist Joint ◽  
External Rotation ◽  
Linear Regression Analysis ◽  
Three Dimensional ◽  
Multiple Linear Regression Analysis ◽  
Acceleration Phase ◽  
Phase Duration ◽  
Kinematic Data ◽  
Post Impact ◽  
Maximal Effort

The forehand jump smash is an essential attacking stroke within a badminton player’s repertoire. A key determinate of the stroke’s effectiveness is post-impact shuttlecock speed, and therefore awareness of critical technique factors that impact upon speed is important to players/coaches. Three-dimensional kinematic data of player, racket and shuttlecock were recorded for 18 experienced players performing maximal effort forehand jump smashes. Joint angles and X-factor (transverse plane pelvis-thorax separation) were calculated at key instants: preparation, end of retraction, racket lowest point, turning point and shuttlecock contact. Peak shoulder, elbow, and wrist joint centre linear velocities, phase durations and jump height were also calculated. Correlational analyses were performed with post-impact shuttlecock speed, revealing significant correlations to peak wrist joint centre linear velocity (r = 0.767), acceleration phase duration (r = −0.543), shoulder internal/external rotation angle at shuttlecock contact (r = 0.508) and X-factor at the end of retraction (r = −0.484). Multiple linear regression analysis revealed 43.7% of the variance in shuttlecock speed could be explained by acceleration phase duration and X-factor at the end of retraction, where shorter acceleration phase durations and more negative X-factor at end of retraction caused greater shuttlecock speeds. These results suggest that motions of the proximal segments (shoulder and pelvis–thorax separation) are critical to developing greater distal linear velocities, which subsequently lead to greater post-impact shuttlecock speed.

AUTOMATED RANGE-OF-MOTION DEVICE FOR TOTAL HIP ARTHROPLASTY PROSTHESIS

2006 ◽  
Vol 10 (03) ◽  
pp. 151-155 ◽  
Author(s):  
Prashanth P. Prabhakar ◽  
Qingshan Chen ◽  
Fredrick Schultz ◽  
Jean Yves Lazennec ◽  
Kai-Nan An
Keyword(s):  
Total Hip Arthroplasty ◽  
Range Of Motion ◽  
Hip Arthroplasty ◽  
External Rotation ◽  
Three Dimensional ◽  
Coordinate Measuring Machine ◽  
Acetabular Cup ◽  
Total Hip ◽  
Rocking Motion ◽  
Measuring Machine

Hip simulators are regularly used by researchers to assess total hip arthroplasty (THA) implants, range of motion, stability, and alignment of acetabular cup and stem. Previous papers have described three types of simulators: three-dimensional protractors, biaxial rocking motion (BRM) protractors, and single-axis prosthetic range-of-motion (PROM) devices. We have developed a new hip simulator in which the ROM device is completely automated in three independent axes (elevation, internal/external rotation, and plane of elevation). Coupled with the simulator, we used a FaroArm Gold Series coordinate measuring machine (CMM) to accurately align the implant components. The results show that the methodology and alignment setup are accurate and repeatable. With this simulator and digitizer, we are able to study the characteristics of numerous THA implants at various orientations of the pelvis, acetabular cup, stem, and femur.

scholarly journals Cycling Kinematics in Healthy Adults for Musculoskeletal Rehabilitation Guidance

2021 ◽  
Author(s):  
Haeun Yum ◽  
Hyang Kim ◽  
Taeyong Lee ◽  
Moon Seok Park ◽  
Seung Yeol Lee
Keyword(s):  
Sagittal Plane ◽  
External Rotation ◽  
Three Dimensional ◽  
Healthy Adults ◽  
Postoperative Rehabilitation ◽  
Kinematic Data ◽  
Average Value ◽  
The Right ◽  
Joint Motions ◽  
Musculoskeletal Rehabilitation

Abstract Background: Stationary cycling is commonly used for postoperative rehabilitation of physical disabilities, but few studies have focused on the three-dimensional (3D) kinematics of rehabilitation. This study aimed to elucidate the three-dimensional lower limb kinematics of musculoskeletally healthy people and the effect of sex and age on kinematics using a controlled bicycle configuration.Methods: Thirty-one healthy adults participated in the study. The stationary cycle positioning was standardized using the LeMond method by setting the saddle height to 85.5% of the participant’s inseam. The participants maintained a pedaling rate of 10–12 km/h, and the average value of three successive cycles of the right leg was used for analysis. The pelvis, hip, knee, and ankle joint motions during cycling were evaluated in the sagittal, coronal, and transverse planes. Kinematic data were normalized to 0–100% of the cycling cycle. The Kolmogorov-Smirnov test, Mann-Whitney U test, Kruskal-Wallis test, and k-fold cross-validation were used to analyze the data.Results: In the sagittal plane, the cycling ranges of motion (ROMs) were 1.6° (pelvis), 43.9° (hip), 75.2° (knee), and 26.9° (ankle). The coronal plane movement was observed in all joints, and the specific ROMs were 6.6° (knee) and 5.8° (ankle). There was significant internal and external rotation of the hip (ROM: 11.6°), knee (ROM: 6.6°), and ankle (ROM: 10.3°) during cycling. There was no difference in kinematic data of the pelvis, hip, knee, and ankle between sexes (p = 0.12 to 0.95) and among ages (p = 0.11 to 0.96) in all anatomical planes.Conclusions: The kinematic results support the assertion that cycling is highly recommended for comprehensive musculoskeletal rehabilitation. These results may help clinicians choose a target recovery ROM based on healthy and non-elite individuals and issue suitable guidelines to patients.

scholarly journals Motion Analysis Focusing on Rotational Movements of Professional Female Baseball Pitchers: Comparison with Male University Baseball Pitchers

2021 ◽  
Vol 18 (24) ◽  
pp. 13342
Author(s):  
Yoshikazu Azuma ◽  
Tomoyuki Matsui ◽  
Machiko Hiramoto ◽  
Ruo Hashimoto ◽  
Kanta Matsuzawa ◽  
...  
Keyword(s):  
Motion Analysis ◽  
External Rotation ◽  
Three Dimensional ◽  
Lateral Side ◽  
Kinematic Data ◽  
Ball Release ◽  
Rotation Phase ◽  
Baseball Pitchers ◽  
Analysis System ◽  
Throwing Motion

Purpose: The purpose of this study was to compare pitching motion of the professional female baseball pitchers with the male university baseball pitchers focused on the pelvic and thoracic movements. Subjects and methods: The participants were 15 healthy professional female baseball pitchers (11 right-handers and 4 left-handers; age, 21.7 ± 3.2 years; height, 162.5 ± 5.1 cm; weight, 59.0 ± 6.6 kg) and 14 healthy male university baseball pitchers (12 right-handers and 2 left-handers; age, 19.9 ± 0.8 years; height, 176.4 ± 3.0 cm; body mass, 73.1 ± 3.0 kg). Throwing motion was captured by three-dimensional motion analysis system. Kinematic data of the lead hip, pelvis, thorax, and dominant shoulder were collected and the joint angle at maximum external rotation phase and ball release phase were compared. Results: The female baseball pitchers rotated pelvis and thorax more than the male at the maximum external rotation phase and ball release phase (p < 0.05). At the same, the pelvis and thorax of the female baseball pitchers were tilted significantly closer to horizontal plane than the male (p < 0.05). The pelvis and thorax of the male baseball pitchers was tilted to non-dominant lateral side. Conclusions: The results of this study indicate that the pelvic and thoracic movements of the professional female baseball pitchers was different from male university pitchers.

scholarly journals Three-dimensional motion analysis of hip motions in ten common Asian sitting positions in daily living. Do gender and being overweight affect the range of hip motions?

2021 ◽  
Author(s):  
Phob Ganokroj ◽  
Jirayu Chaowalitwong ◽  
Pichitpol Kerdsomneuk ◽  
Narumol Sudjai ◽  
Pisit Lertwanich ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Motion Analysis ◽  
External Rotation ◽  
Three Dimensional ◽  
Cross Sectional Study ◽  
Flexion Angle ◽  
Abduction Angle ◽  
Female Group ◽  
Cross Sectional ◽  
Kinematic Data

Abstract Background Sitting involves many activities of daily life and requires most motion in the hip joint. Asians have more hip flexion and external rotation motions than Westerners owing to cultural and lifestyle differences. Being aware of the normal range of hip motion is essential in clinical practice. Limited research has focused on the hip motions of common sitting positions. The objective was to determine the hip motions of 10 common sitting positions, and to determine whether gender or being overweight affects the range of hip motions.Methods An experimental cross-sectional study was conducted to determine hip motions by using a standard, three-dimensional, motion-analysis system. Healthy subjects performed 10 sitting positions during 3 trials. All hip-kinematic data were measured on the dominant leg of each participant, except for the right- and left-monk positions (both hips were analyzed). Density plots were constructed and statistical analyses were performed to detect the differences between groups (male and female; non-overweight and overweight).Results The 48 participants comprised 24 males and 24 females. Most were right-leg dominant (45 participants; 93.8%). Of the 22 participants in the overweight group (body mass index ≥ 23 kg/m2), 18 (75%) were male. Squatting showed the highest flexion angle (99.7º; 47.3º–122º). Cross-legged sitting had the highest abduction angle (28.9º; 9.9º–45.7º) and the largest external rotation angle (62º; 37.6º–81.7º). In the female group, there were trends toward a greater flexion angle (4 out of 10 sitting positions) and a smaller abduction angle (6 out of 9 positions), with P values < 0.05. As to body weight, the overweight participants had a smaller flexion angle but a greater abduction angle, with 5 out of 9 positions having a P value < 0.05. Kinematic data of the transverse plane revealed that the heterogeneity of the rotational angles depended on the sitting position.Conclusions This study provided the functional hip motions of common Asian sitting positions. The kinematic data can be utilized in clinical practice as reference values to determine safe positions. Gender and being overweight affected the hip angles in the sagittal and frontal planes.Trial registration: Number TCTR20181021004, retrospectively registered at the Thai Clinical Trials Registry (http://www. clinicaltrials.in.th).

The effect of cup orientation on stability of trapeziometacarpal total joint arthroplasty: a biomechanical cadaver study

2019 ◽  
Vol 44 (7) ◽  
pp. 708-713 ◽  
Author(s):  
Annelien Brauns ◽  
Pieter Caekebeke ◽  
Joris Duerinckx
Keyword(s):  
Range Of Motion ◽  
Joint Replacement ◽  
Total Joint Arthroplasty ◽  
Total Joint Replacement ◽  
Articular Surface ◽  
Three Dimensional ◽  
Cadaver Study ◽  
Joint Arthroplasty ◽  
Joint Stability ◽  
Prosthetic Joint

It has been suggested that the cup of a trapeziometacarpal total joint replacement should be positioned parallel with the proximal articular surface of the trapezium to align it with the centre of motion. This would diminish the chance of dislocation. The goal of this study was to test this idea biomechanically. A linked trapeziometacarpal prosthesis was implanted in seven cadaver hands and combined with three-dimensional printed trapezium cups in 17 different orientations. For every combination, stability of the prosthesis was assessed through its entire passive range of motion. Dorsal inclination of the cup relative to the proximal articular surface increased the risk of dislocation with thumb flexion and opposition. The risk of dislocation was also increased with lateral or medial inclination of the cup exceeding 20°. Our results demonstrate that cup orientation is an important factor in prosthetic joint stability. Cup placement parallel to the proximal articular surface is ideal.

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