zLOCK's design is based on 3D printer technology that enables the development and production of designs that weren’t possible with conventional manufacturing methods.
Facet fusion has been utilized in the past for indications such as spinal stenosis and facet arthritis. Facet fusion is usually achieved with the use of screw-based products that are offered by a number of manufacturers in the market.
The success of facet fusion has been reviewed in the literature and has demonstrated a high rate of success in reaching fusion six months post-op.
Facet fusion has been proven clinically using facet screws. Although successful in fusion procedures, facet screws have two major challenges:
1. Achieving solid fusion requires removing the internal cartilage and using a bone graft, which is more complicated when facet screws are used.
2. Fixing two very small bones with an extremely small screw is challenging technically and is a sub-optimal procedure by nature.
The zLOCK's design overcomes these two challenges to provide a better solution in facet fusion and posterior stabilization.
Indications for Use
zLOCK achieves facet fusion without the challenges associated with facet screws
The zLOCK system is indicated for the treatment of any or all of the following:
Degenerative spondylolisthesis up to grade 2
Mild to moderate degenerative disc disease (DDD)
Degeneration of the facets
zLOCK is designed to complement anterior cages placed in a lateral approach (XLIF, LLIF, OLIF) as a minimally invasive solution for posterior stabilization in such procedures.
 S. Rajasekaran, at el.; Translaminar Facetal screw (Magerl’s) fixation; Neurology India 2005 (Vol 53) 523