Comparison of in vivo Kinematics in Primary Medial Osteoarthritic and ACL Deficient Knees during a Leg Press
Kei Yoneta, Takeshi Miyaji, Akihiro Yonekura, Takashi Miyamoto, Kenichi Kidera, Hiroyuki Shindo, Scott A Banks, Kenji Hoshi and Kazuyoshi Gamada*
Department of Integrated Rehabilitation, Faculty of Health Sciences, Hiroshima International University, Higashihiroshima, Japan
- *Corresponding Author:
- Kazuyoshi Gamada
Hiroshima International University
555-36 Kurose-Gakuendai, Bldg1, Rm705
Higashi-Hiroshima, Hiroshima, 739-2695 Japan
E-mail: [email protected]
Received date: April 22, 2015 Accepted date: August 24, 2015 Published date: August 27, 2015
Citation: Yoneta K, Miyaji T, Yonekura A, Miyamoto T, Kidera K, et al. (2015) Comparison of in vivo Kinematics in Primary Medial Osteoarthritic and ACL Deficient Knees during a Leg Press . Int J Phys Med Rehabil 3:300. doi:10.4172/2329-9096.1000300
Copyright: © 2015 Yoneta K, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Background: Primary knee osteoarthritis (OA) is a progressive and disabling disorder affecting up to 13% of individuals aged 65 years and older. Anterior cruciate ligament deficiency (ACLD) is known to be a major precursor of early development of degenerative changes in the knee. There is a possibility of becoming a help of the disease process clarification of knee OA appearance of disease by investigating the relativity of knee OA and ACLD.
Methods: Fifteen OA, 9 ACLD, and 9 uninvolved knees were enrolled. In vivo knee kinematics was obtained using a 3D-to-2D registration technique utilizing CT-based bone models and lateral fluoroscopy during a leg press activity.
Results: The OA knees were in greater external rotation than the uninvolved and ACLD knees, while there were no differences between the uninvolved and ACLD knees. Reduced screw home motion was observed in OA knees. Knee kinematics in the earlier stages of knee OA appeared to change at mid flexion angles, while in the later stages at all flexion angles.
Conclusions: The OA knees showed grater abnormal kinematics as compared than the ACLD at small load of a leg press device. Level of Evidence: Prognostic Level III.