Publications by Hooman Dejnabadi

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The importance of evaluation of an orthopedic operation such as hip or knee arthroplasty has long been recognized. Many definitions of outcome and scoring questionnaires have been used in the past to assess the outcome of joint replacement. However, these ...

A new method of measuring joint angle using a combination of accelerometers and gyroscopes is presented. The method proposes a minimal sensor configuration with one sensor module mounted on each segment. The model is based on estimating the acceleration of ...

Objective: In this paper, a new vibrational modal analysis technique was developed for intraoperative cementless prosthesis fixation evaluation upon hammering. Methods: An artificial bone (Sawbones)-prosthesis system was excited by sweeping of a sine signa ...

Gait speed is an important parameter to characterize people's daily mobility. For real-world speed measurement, inertial sensors or Global Navigation Satellite System (GNSS) can be used on wrist, possibly integrated in a wristwatch. However, power consumpt ...

Gait bouts (GB), as a prominent indication of physical activity, contain valuable fundamental information closely associated with human & x2019;s health status. Therefore, objective assessment of the GB (e.g. detection, spatio-temporal analysis) during dai ...

A new method of estimating lower limbs orientations using a combination of accelerometers and gyroscopes is presented. The model is based on estimating the accelerations of ankle and knee joints by placing virtual sensors at the centers of rotation. The pr ...

In this work we designed and tested an in-vivo measurement system of prosthetic knee joint angles. The system included a small permanent magnet in the femoral part and three magneto resistance sensors placed in the polyethylene part. The sensor configurati ...

Objective: To investigate the correlation between objective and subjective evaluation of patients with total hip replacement. Design: Prospective preliminary trial comparing the Western Ontario and McMaster University questionnaire ( WOMAC) and gait analys ...

In this work we present an instrumented smart knee prosthesis for in-vivo measurement of forces and kinematics. Studying the constraints, we designed minimal sensory systems to be placed in the polyethylene part of the prosthesis. The magnetic sensors and ...

This study compared the outcome of total knee replacement (TKR) in adult patients with fixed- and mobile-bearing prostheses during the first post-operative year and at five years' follow-up, using gait parameters as a new objective measure. This double-bli ...

Hooman Dejnabadi

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Analysis of gait and coordination for arthroplasty outcome evaluation using body-fixed sensors

A new approach to accurate measurement of uniaxial joint angles based on a combination of accelerometers and gyroscopes

A Vibrational Technique for in vitro Intraoperative Prosthesis Fixation Monitoring

Real-world gait speed estimation using wrist sensor: A personalized approach

Real-World Gait Bout Detection Using a Wrist Sensor: An Unsupervised Real-Life Validation

Estimation and visualization of sagittal kinematics of lower limbs orientation using body-fixed sensors

An Implantable System for Angle Measurement in Prosthetic Knee

Gait analysis and WOMAC are complementary in assessing functional outcome in total hip replacement

Instrumented Prosthesis for Knee Implants Monitoring

A randomised controlled clinical trial and gait analysis of fixed- and mobile-bearing total knee replacements with a five-year follow-up

Objective analysis of gait coordination for total knee arthroplasty outcome

A New Approach for Quantitative Analysis of Inter-Joint Coordination during Gait