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Bone & Joint Research

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Bone & Joint Research
Vol. 1, Issue 5 | Pages 78 - 85
1 May 2012
Entezari V Della Croce U DeAngelis JP Ramappa AJ Nazarian A Trechsel BL Dow WA Stanton SK Rosso C Müller A McKenzie B Vartanians V Cereatti A

Objectives

Cadaveric models of the shoulder evaluate discrete motion segments using the glenohumeral joint in isolation over a defined trajectory. The aim of this study was to design, manufacture and validate a robotic system to accurately create three-dimensional movement of the upper body and capture it using high-speed motion cameras.

Methods

In particular, we intended to use the robotic system to simulate the normal throwing motion in an intact cadaver. The robotic system consists of a lower frame (to move the torso) and an upper frame (to move an arm) using seven actuators. The actuators accurately reproduced planned trajectories. The marker setup used for motion capture was able to determine the six degrees of freedom of all involved joints during the planned motion of the end effector.