HILLSBORO, Ore., Jan. 14, 2014 /PRNewswire-iReach/ -- Acumed's new SLIC Screw System - a jointed screw and a targeting guide with accompanying instrumentation to place and insert the screw accurately - offers surgeons a new adjunct to the soft tissue (e.g. ligament) repair or reconstruction as it holds the bones reduced while soft tissue repair heals.
The SLIC Screw is designed to maintain the anatomical reduction (spacing) of the scaphoid and lunate while allowing some rotation between the carpals. A radiolucent targeting guide is provided to aid in the initial reduction of the scaphoid and lunate and the placement of the screw in the central portion of these two carpals, affording the soft tissue repair the best opportunity for successful healing.
Scapholunate instability occurs when the ligament connecting these two carpals and secondary stabilizing ligaments are damaged – torn or stretched beyond their normal capacity.
The damage to the ligaments allows abnormal rotation and motion (kinematics) of the scaphoid and lunate, which can lead to wrist pain and eventually arthritic changes in the wrist. While the scaphoid and lunate bones themselves are not damaged, the rotation and gap between the two wrist bones increases, and this must be anatomically reduced in order to promote healing of the soft tissues and restore normal function.
The SLIC Screw differs from other approaches, such as K-wires and conventional screws, in two significant ways. First, the SLIC Screw has a joint that allows rotation between the scaphoid and lunate.
Second, the screw is designed to be removed in six to nine months, protecting the soft tissue repair and allowing more time for biological healing. By contrast, K-wires are typically removed
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