Mechanical wear analysis helps understand a mechanism of failure in retrieved magnetically controlled growing rods: a retrieval study

摘要

Photograph of a retrieved MAGEC rod (a) with the main components labelled as non-extending bar (A), actuator (B) and telescopic bar (C). Schematic of the mechanism of a retrieved MAGEC rod (b): From left to right: non-extending bar (A, dark grey), actuator case (B, black), bearings (C, orange), actuating magnet (D, light blue), locking pin (E, red), driving screw (F, yellow), sealing (G, green), telescopic bar (H, dark blue). The measuring region of this study was labelled (box)