Print Email Facebook Twitter Range of motion assessment during total hip arthroplasty Title Range of motion assessment during total hip arthroplasty: Development and validation of a new instrument for range of motion measurement during total hip arthroplasty Author Boedhoe, Raoul (TU Delft Mechanical, Maritime and Materials Engineering; TU Delft Biomechanical Engineering) Contributor Horeman, T. (mentor) Wei, J.C. (mentor) Dankelman, J. (graduation committee) Seth, A. (graduation committee) Degree granting institution Delft University of Technology Programme Biomedical Engineering Date 2020-05-29 Abstract Total Hip Arthroplasty (THA) is a procedure where a defective hip joint with pain symptoms or functional impairment is replaced by a hip prosthesis. During this procedure, the optimal hip prosthesis should be chosen and placed in the correct orientation to achieve a stable hip joint. Failure to do so can lead to dislocation, mechanical failure or infection of the hip joint. To improve the outcome of the THA, range of motion (ROM) of the hip joint can be evaluated during the surgery after placement of the hip prosthesis. Current methods of measuring hip ROM have some limitations. For example, there is a low intra- and inter-test reliability between identification of the bony landmarks and goniometric alignment. The goal of this project was to develop an instrument that can measure the ROM during THA without the limitations of current instruments. An instrument was developed that determines its orientation via an inertial measurement unit (IMU). The IMU is connected on the upper leg via a strap and aligned with the bony landmarks via laser beams. A test has been performed to validate the usage of the instrument. The ROM of the hip for flexion and abduction motion was measured with the instrument and compared to a reference measurement made with two video cameras. A significant difference was found: the instrument did not stay aligned with the hip joint. For further development of the instrument, the drift should be minimised and multiple straps should be tested to allow a better fixation. Additionally, the added-value of the laser requires further research. Subject Total Hip ArthroplastyRange of motionIMUhip prosthesis To reference this document use: http://resolver.tudelft.nl/uuid:263d00b6-0b0f-4ad5-b9dd-2d4522238c46 Part of collection Student theses Document type master thesis Rights © 2020 Raoul Boedhoe Files PDF Thesis_RaoulBoedhoe_4421655.pdf 25.57 MB Close viewer /islandora/object/uuid:263d00b6-0b0f-4ad5-b9dd-2d4522238c46/datastream/OBJ/view