Laminar Hook

Immobilization & Stabilization: They are used to secure adjacent vertebrae and create a rigid frame-like system for the spine.

Material: Typically made of metal, such as titanium.

Connection to Rods: The hook connects to a longitudinal rod via a small lid or screw, which is tightened to form the complete fixation system.

Types of Laminar Hooks

Supralaminar Hooks: These are placed over the superior (top) edge of the lamina, pointing downwards (caudally).

Infralaminar Hooks: These are placed under the inferior (bottom) edge of the lamina, pointing upwards (cranially).

Transverse Process Hooks: A variation of the laminar hook that can be placed down-going on the superior edge of the transverse process in the thoracic spine.

Clinical Applications
Spinal Fusion: They provide a stable anchor for the spine during posterior spinal fusion (PSF) to promote bone healing and fusion.