Predicting the level of knee osteoarthritis by using dimension reduction techniques on time series features of gait data

Download
2013
Caner, Salih
Gait analysis is the systematic study of human walking. Gait analysis is also used on facilitating medical diagnosis decisions such as on a disease called knee osteoarthritis (OA) which is a disorder that affects joint cartilage. Gait data used in this study was collected from Ankara University Department of Physical Medicine and Rehabilitation Gait Laboratory for the study called “A Decision Support System for Grading Knee Osteoarthritis Using Gait Data” implemented by Şen. Some of the main obstacles of analyzing gait data which was captured by special video cameras are multidimensionality and correlation of data. Due to the complexity and high dimensionality of gait patterns, clinicians have limited understanding and difficulty interpreting raw data. The objective of this study is to implement some dimension reduction techniques on the waveforms of gait data to improve accuracy of classification methods in grading OA.

Suggestions

‘oagait’ : a decision support system for grading knee osteoarthritis using gait data
Şen Köktaş, Nigar; Yalabık, Neşe; Department of Information Systems (2008)
Gait analysis is the process of collecting and analyzing quantitative information about walking patterns of the people. Gait analysis enables the clinicians to differentiate gait deviations objectively. Diagnostic decision making from gait data only requires high level of medical expertise of neuromusculoskeletal system trained for the purpose. An automated system is expected to decrease this requirement by a ‘transformed knowledge’ of these experts. This study presents a clinical decision support system fo...
Dynamic function of the fibula. Gait analysis evaluation of three different parts of the shank after fibulectomy: proximal, middle and distal
BOZKURT, MURAT; Yavuzer, G; Tönük, Ergin; KENTEL, BEHZAT BAHADIR (Springer Science and Business Media LLC, 2005-12-01)
The purpose of this case study was to investigate the dynamic features of fibular movement to gait pattern by analyzing the gait of individuals with three different parts of the fibula resected. Gait analyses revealed that proximal fibula resection impaired knee stability, whereas distal fibula resection disturbed ankle kinematics significantly. Except a mild secondary quadriceps weakness, middle fibula resection did not cause a significant biomechanical disturbance on gait.
Statistical analysis of force distribution on the plantar foot during quiet stance
Alkan, Okan; Gürses, Senih; Tarman, Işık Hakan; Department of Engineering Sciences (2015)
In most of the posture studies, foot is considered as a single rigid body.However, recent works focused on multi-segmented kinematic foot models and ground reaction force distribution beneath the feet. This thesis presents a study on the role of the foot as a deformable body for controlling the human erect posture. A pressure-pad and a force platform were used in order to determine the distribution of ground reaction forces (GRF). Pressure distribution data beneath the feet of seven male and female right-ha...
Identification of a vertical hopping robot model via harmonic transfer functions
Uyanik, Ismail; Ankaralı, Mustafa Mert; Cowan, Noah J.; Saranlı, Uluç; Morgul, Omer (2016-05-01)
A common approach to understanding and controlling robotic legged locomotion is the construction and analysis of simplified mathematical models that capture essential features of locomotor behaviours. However, the representational power of such simple mathematical models is inevitably limited due to the non-linear and complex nature of biological locomotor systems. Attempting to identify and explicitly incorporate key non-linearities into the model is challenging, increases complexity, and decreases the ana...
Effects of custom made insole on gait pattern of patients with unilateral displaced intra articular calcaneal fracture evaluation with computerized gait analysis
ÖÇGÜDER, Ali; GÖK, HAYDAR; HEYCAN, Cengiz; O, TECİMEL; Tönük, Ergin; BOZKURT, MURAT (AVES Publishing Co., 2012-01-01)
Objective: The aim of this study was to investigate whether use of custom-fabricated insoles improves the gait pattern in patients with displaced intra-articular calcaneal fractures. Methods: Fourteen patients (7 female, 7 male; mean age: 39±12 years) and 11 healthy individuals (mean age: 42±13 years) were included in the study. Treatment protocol included conservative treatment involving immobilization, with or without closed reduction, active exercises, wear of a customfabricated insole and prospective fo...
Citation Formats
S. Caner, “Predicting the level of knee osteoarthritis by using dimension reduction techniques on time series features of gait data,” M.S. - Master of Science, Middle East Technical University, 2013.