| 摘要 |
An alignment jack apparatus is disclosed for use in association with a circular external ring fixator system and facilitating alignment of displaced fracture bone fragments. The jack apparatus comprise a body housing a position control mechanism, an attachment clip connected to the body for releasably retaining the jack apparatus upon an external ring such that the alignment jack apparatus may be positioned between the external ring and the exterior facing surface of an underlying limb. The position control mechanism extends a moveable shaft from the body housing or retracts the shaft into the body housing such that a pressure plate connected to the shaft contacts the soft tissue of the limb and transmits a force to the underlying bone whereby an underlying bone fragment is repositioned as the pressure plate applies force to the external surface of the limb.
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