Elvire Guerre1,2, Pascale Laronde3,4, Jérôme Cussonneau5,6, Christian Fontaine3,4,7, Guillaume Wavreille3,4. 1. Department of Orthopedic Surgery and Traumatology, Roger Salengro Hospital, Lille University Hospital, Rue du Professeur Emile Laine, 59037, Lille Cedex, France. elvire.guerre@chru-lille.fr. 2. Department of Anatomy, Faculty of Medicine Henri Warembourg, Place de Verdun, University of Lille, 59045, Lille Cedex, France. elvire.guerre@chru-lille.fr. 3. Department of Orthopedic Surgery and Traumatology, Roger Salengro Hospital, Lille University Hospital, Rue du Professeur Emile Laine, 59037, Lille Cedex, France. 4. Department of Anatomy, Faculty of Medicine Henri Warembourg, Place de Verdun, University of Lille, 59045, Lille Cedex, France. 5. Ecole Centrale de Nantes, Nantes, France. 6. Technische Universität München, München, Germany. 7. Laboratoire d'Automatique, de Mécanique, et d'Informatique industrielles et Humaines (LAMIH) FRE 3304, Université de Valenciennes et du Hainaut-Cambraisis, Le Mont Houy, 59313, Valenciennes Cedex 9, France.
Abstract
PURPOSE: Knowledge of elbow kinematics is essential to better understand this joint. There is currently no reliable dynamic method to accurately study the elbow joint in a non-invasive manner. The goal of this study was to implement an accurate protocol to study in vivo elbow kinematics using a VICON™ optoelectronic motion analysis system. MéTHODS: The elbow's centers of rotation (CR) were calculated for 10 anatomical specimens. The effect of skin movement was determined by comparing measurements taken using skin surface markers and bone-fixed markers. The validated protocol was then used in 30 healthy subjects who underwent passive elbow joint movements. RESULTS: The elbow's CR was found to be distal (7 ± 14 mm), lateral (4 ± 9 mm) and anterior (4 ± 10 mm) to the medial epicondyle in vitro. Mean CR values for anatomical specimens did not differ whether calculated using the skin-based or bone-fixed markers. CONCLUSION: This study has validated a dynamic, non-invasive, and accurate method for locating the elbow's center of rotation. This preliminary study thus found a different center of rotation of the one in the middle of the trochlea previously thought. This could lead us to reflect on the designs of our prostheses to reduce the mechanical stresses and the risk of loosening.
PURPOSE: Knowledge of elbow kinematics is essential to better understand this joint. There is currently no reliable dynamic method to accurately study the elbow joint in a non-invasive manner. The goal of this study was to implement an accurate protocol to study in vivo elbow kinematics using a VICON™ optoelectronic motion analysis system. MéTHODS: The elbow's centers of rotation (CR) were calculated for 10 anatomical specimens. The effect of skin movement was determined by comparing measurements taken using skin surface markers and bone-fixed markers. The validated protocol was then used in 30 healthy subjects who underwent passive elbow joint movements. RESULTS: The elbow's CR was found to be distal (7 ± 14 mm), lateral (4 ± 9 mm) and anterior (4 ± 10 mm) to the medial epicondyle in vitro. Mean CR values for anatomical specimens did not differ whether calculated using the skin-based or bone-fixed markers. CONCLUSION: This study has validated a dynamic, non-invasive, and accurate method for locating the elbow's center of rotation. This preliminary study thus found a different center of rotation of the one in the middle of the trochlea previously thought. This could lead us to reflect on the designs of our prostheses to reduce the mechanical stresses and the risk of loosening.
Authors: A M Weinberg; I T Pietsch; M Krefft; H C Pape; M van Griensven; M B Helm; H Reilmann; H Tscherne Journal: Unfallchirurg Date: 2001-05 Impact factor: 1.000
Authors: Shian Chao Tay; Richard A Berger; Kazunari Tomita; Ek Tsoon Tan; Kimberly K Amrami; Kai-Nan An Journal: J Hand Surg Am Date: 2007-04 Impact factor: 2.230