Noninvasive Quantification of Subtalar Joint Kinematics

2014 ◽  
Vol 104 (1) ◽  
pp. 103-109 ◽  
Author(s):  
Ivan Birch ◽  
Kevin Deschamps
Keyword(s):  
Validation Study ◽  
Subtalar Joint ◽  
Reference Frames ◽  
Joint Kinematics ◽  
Face Validity ◽  
Asymptomatic Individual ◽  
Noninvasive Method ◽  
Motion Patterns ◽  
Good Consistency ◽  
Study Support

A noninvasive method of assessing the motion of the subtalar joint was developed for use in clinical and research settings. Anatomical reference frames for the calcaneus and talus were produced using a marker placement model utilizing 14 markers. An asymptomatic individual was tested during barefoot walking with a CODA MPX30 system. Intertrial variability and motion patterns, in all three planes, of the calcaneus with respect to the talus were analyzed as part of a validation study. The observed patterns in all three planes were found to have good face validity with published literature as well as good consistency during stance. The findings of this study support the further use of this model in both clinical and research settings, allowing investigation of the motion patterns of a larger cohort than has hitherto been possible.

scholarly journals Assessment of the face validity of two pain scales in Kenya: a validation study using cognitive interviewing

2012 ◽  
Vol 11 (1) ◽  
Author(s):  
Kristin TL Huang ◽  
Claudio Owino ◽  
Rachel C Vreeman ◽  
Mildred Hagembe ◽  
Festus Njuguna ◽  
...  
Keyword(s):  
Validation Study ◽  
Face Validity ◽  
Cognitive Interviewing ◽  
Pain Scales ◽  
The Face

scholarly journals Validation of martyn to simulate the keyhole supraorbital subfrontal approach

2014 ◽  
Vol 96 (4) ◽  
pp. 120-121 ◽  
Author(s):  
Hani J Marcus ◽  
Archie Hughes-Hallett ◽  
Philip Pratt ◽  
Guang-Zhong Yang ◽  
Ara Darzi ◽  
...  
Keyword(s):  
Construct Validity ◽  
Royal College ◽  
Validation Study ◽  
Content Validity ◽  
Face Validity ◽  
Great Success ◽  
Surgical Experience ◽  
Vascular Tree ◽  
Subfrontal Approach

The Modelled Anatomical Replica for Training Young Neurosurgeons (MARTYN) has been created by the conservation team at The Royal College of Surgeons of England to simulate traumatic pathologies (such as extradural haemorrhage) and has been used with great success at relevant workshops. A modified MARTYN head has recently been developed that incorporates a vascular tree and pathology, allowing for the simulation of the keyhole supraorbital subfrontal approach. 1 Here we present a short validation study assessing its realism (face validity), usefulness (content validity) and ability to differentiate levels of surgical experience (construct validity).

Experimental assessment of the coupling between shank rotation and subtalar joint kinematics during walking

2015 ◽  
Vol 42 ◽  
pp. S101
Author(s):  
M. Rabuffetti ◽  
T. Lencioni ◽  
A. Lachgar ◽  
M. Ferrarin
Keyword(s):  
Subtalar Joint ◽  
Joint Kinematics ◽  
Experimental Assessment

Dynamic in Vivo Subtalar Joint Kinematics Measured Using a Skin Marker–Based Protocol

2014 ◽  
Vol 104 (4) ◽  
pp. 357-364 ◽  
Author(s):  
Ivan Birch ◽  
Kevin Deschamps
Keyword(s):  
Subtalar Joint ◽  
Stance Phase ◽  
Face Validity ◽  
Exclusion Criteria ◽  
In Vivo Kinematics ◽  
Skin Marker ◽  
The Face ◽  
And Function ◽  
Interpatient Variation

Background The subtalar joint allows complex motion of the foot relative to the leg, the analysis of which has presented a major challenge for researchers. The considerable interpatient variation in structure and function of the subtalar joint highlights the importance of developing a protocol to assess the kinematics in individuals rather than developing an overarching description of function. The use of skin-mounted markers is, therefore, preferable, allowing the noninvasive collection of data. We sought to assess the face validity of a skin-mounted marker–based protocol to measure the in vivo kinematics of the subtalar joint. Methods Thirty participants were recruited using minimal exclusion criteria. A previously tested skin-mounted marker placement protocol was used in conjunction with two CODA MPX 30 sensors to capture data during walking. The data produced were compared with those from previous studies that used bone-mounted markers. Results The results in all three planes represented feasible outcomes compared with those of previous studies, the data falling within the ranges published. Patterns of movement demonstrated are similar to, although not the same as, those shown by previous investigations. Conclusions This study did not produce patterns of movement that exactly matched those of previous investigations. The results were, however, within the ranges previously published, and the patterns of movement shown were feasible. The results suggest the face validity of the method as a means of assessing the in vivo kinematics of the subtalar joint during the stance phase of gait.

scholarly journals How to enhance and assess reflection in specialist training: a mixed method validation study of a new tool for global assessment of reflection ability

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Gunver Lillevang ◽  
Helle Ibsen ◽  
Søren Hast Prins ◽  
Niels Kristian Kjaer
Keyword(s):  
Construct Validity ◽  
Method Validation ◽  
Validation Study ◽  
Mixed Method ◽  
Global Assessment ◽  
Assessment Tool ◽  
Face Validity ◽  
Train The Trainer ◽  
Specific Complex ◽  
Mind Maps

Abstract Background In Danish GP training we had the ambition to enhance and assess global reflection ability, but since we found no appropriate validated method in the literature, we decided to develop a new assessment tool. This tool is based on individual trainee developed mind maps and structured trainer-trainee discussions related to specific complex competencies. We named the tool Global Assessment of Reflection ability (GAR) and conducted a mixed method validation study. Our goal was to investigate whether it is possible to enhance and assess reflection ability using the tool. Methods In order to investigate acceptability, feasibility, face validity, and construct validity of the tool we conducted a mixed method validation study that combined 1) qualitative data obtained from 750 GP trainers participating in train-the-trainer courses, 2) a questionnaire survey sent to 349 GP trainers and 214 GP trainees and 3) a thorough analysis of eight trainer-trainee discussions. Results Our study showed an immediate high acceptance of the GAR tool. Both trainers and trainees found the tool feasible, useful, and relevant with acceptable face validity. Rating of eight audio recordings showed that the tool can demonstrate reflection during assessment of complex competencies. Conclusions We have developed an assessment tool (GAR) to enhance and assess reflection. GAR was found to be acceptable, feasible, relevant and with good face- and construct validity. GAR seems to be able to enhance the trainees’ ability to reflect and provide a good basis for assessment in relation to complex competencies.

scholarly journals Ankle and Subtalar Joint Kinematics Following Lateral Ligament Repair-Implications for Early Surgical Treatment

2017 ◽  
Vol 33 (10) ◽  
pp. e101 ◽  
Author(s):  
Hélder Miguel Duarte Pereira ◽  
Pieter D'Hooghe ◽  
Nicholas Anderson ◽  
Richard Fuld ◽  
Judas Zed Kelley ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Subtalar Joint ◽  
Joint Kinematics ◽  
Lateral Ligament ◽  
Ligament Repair ◽  
Early Surgical Treatment

scholarly journals OpenSim Versus Human Body Model: A Comparison Study for the Lower Limbs During Gait

2018 ◽  
Vol 34 (6) ◽  
pp. 496-502 ◽  
Author(s):  
Antoine Falisse ◽  
Sam Van Rossom ◽  
Johannes Gijsbers ◽  
Frans Steenbrink ◽  
Ben J.H. van Basten ◽  
...  
Keyword(s):  
Human Body ◽  
Reference Frames ◽  
Sagittal Plane ◽  
Joint Kinematics ◽  
Lower Limbs ◽  
Muscle Forces ◽  
Human Body Model ◽  
Body Model ◽  
Human Movements ◽  
Joint Center

Musculoskeletal modeling and simulations have become popular tools for analyzing human movements. However, end users are often not aware of underlying modeling and computational assumptions. This study investigates how these assumptions affect biomechanical gait analysis outcomes performed with Human Body Model and the OpenSim gait2392 model. The authors compared joint kinematics, kinetics, and muscle forces resulting from processing data from 7 healthy adults with both models. Although outcome variables had similar patterns, there were statistically significant differences in joint kinematics (maximal difference: 9.8° [1.5°] in sagittal plane hip rotation), kinetics (maximal difference: 0.36 [0.10] N·m/kg in sagittal plane hip moment), and muscle forces (maximal difference: 8.51 [1.80] N/kg for psoas). These differences might be explained by differences in hip and knee joint center locations up to 2.4 (0.5) and 1.9 (0.2) cm in the posteroanterior and inferosuperior directions, respectively, and by the offset in pelvic reference frames of about 10° around the mediolateral axis. The choice of model may not influence the conclusions in clinical settings, where the focus is on interpreting deviations from the reference data, but it will affect the conclusions of mechanical analyses in which the goal is to obtain accurate estimates of kinematics and loading.

Cadaveric Evaluation of Soft-Tissue Constraint in the Human Knee

2013 ◽  
Author(s):  
Adam Cyr ◽  
Lorin Maletsky
Keyword(s):  
Soft Tissue ◽  
Knee Joint ◽  
Joint Kinematics ◽  
Motion Patterns ◽  
Passive Motion ◽  
Human Knee ◽  
Human Knee Joint ◽  
Knee Joint Kinematics ◽  
Motion Characteristics

The motion patterns of the human knee joint depend on its passive motion characteristics, which are described by the ligamentous and articular constraints. Since active motions, like walking and squatting are believe to fall within a passive envelope, the basis for the understanding of the knee joint kinematics lies in the description of its passive characteristics.

Sign in / Sign up

Export Citation Format

Share Document