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US09504498B2 Polyaxial bone anchors with increased angulation 有权
具有增加角度的多轴骨锚

Polyaxial bone anchors with increased angulation
摘要:
A polyaxial bone anchor has a locking element shaped and configured to allow an anchoring member (e.g., a screw or hook) to polyaxially rotate at large angles about a central axis of the bone anchor before compression locking the anchoring member within an anchor head.
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