Gait analysis, bone and muscle density assessment for patients undergoing total hip arthroplasty

Basic and applied myology

Þröstur Pétursson¹  Benedikt Magnússon¹  Paolo Gargiulo²  Jan Triebel³  Halldór Jónsson jr³  Grétar Halldórsson⁴  Gígja Magnúsdóttir⁴ 

[1] Biomedical engineering department, Reykjavik University Hospital;Department of Science, Education and Innovation, Landspitali University Hospital, Reykjavik;Orthopaedic Clinic, Landspitali Hospital, Reykjavik;Rehabilitation Clinic Grensás Landspitali Hospital, Reykjavik

关键词: Muscle Density;    Orthopaedic;    Gait Analysis;    Bone Mineral Density;    Electromyography;    Total Hip Replacement;   

DOI  :  10.4081/ejtm.2012.1798

学科分类：农业科学（综合）

来源: Pagepress

【 摘 要 】

Total hip arthroplasty (THA) is performed with or without the use of bone cement. Facing the lack of reliable clinical guidelines on decision making whether a patient should receive THA with or without bone cement, a joint clinical and engineering approach is proposed here with the objective to assess patient recovery developing monitoring techniques based on gait analysis, measurements of bone mineral density and structural and functional changes of quadriceps muscles. A clinical trial was conducted with 36 volunteer patients that were undergoing THA surgery for the first time 18 receiving cemented implant and 18 receiving non-cemented implant. The patients are scanned with Computer Tomographic (CT) modality prior-, immediately- and 12 months post-surgery. The CT data are further processed to segment muscles and bones for calculating bone mineral density (BMD). Quadriceps muscle density Hounsfield (HU) based value is calculated from the segmented file on healthy and operated leg before and after THA surgery. Furthermore clinical assessment is performed using gait analysis technologies such as a sensing carpet, wireless electrodes and video. Patients undergo these measurements prior-, 6 weeks post - and 52 weeks post-surgery. The preliminary results indicate computational tools and methods that are able to quantitatively analyze patient’s condition pre and post-surgery The spatial parameters such as step length and stride length increase 6 weeks post op in the patient group receiving cemented implant while the angle in the toe in/out parameter decrease in both patient groups.

【 授权许可】

CC BY