This device is intended for orthopedic applications, particularly to treat a pars interarticularis fracture. The device is highly specialized to treat a common pars fracture with a uniquely contoured device that stabilizes the inferior fractured element with a generally conforming and non-linear hooked surface then transcribing the pars fracture to rigidly attach to the cortical bone between the facet and pedicle bones while applying compression across the fraction for fracture healing and stabilization.

Provided is a vertebral spacer including a columnar main-body portion attached to individual cut end portions of the cut vertebral arch by screws, wherein the main-body portion is provided with two accommodating holes formed inside the main-body portion at positions spaced in a longitudinal direction of the main-body portion, and individually accommodating head portions of the screws, the individual accommodating holes are provided with openings through which the head portions are inserted into the accommodating holes from outside the main-body portion, and the openings have diameters greater than diameters of shaft portions of the screws, smaller than diameters of the head portions, and increased to a size that is greater than the diameters of the head portions.

A fusion device includes a screw having a head and a shaft. A hollow bone dowel is disposed about the shaft of the screw. The bone dowel is formed from a bone-like, biocompatible, or allograft material.

Lamina plate assemblies, systems, and methods thereof. A lamina plate assembly may be configured to provide lamina support following laminectomy, for example, in cervical and lumbar cases. The lamina plate assembly may include a generally elongate body having a first free end, a second free end, and a posterior portion disposed between the first free end and the second free end. Different embodiments of securing portions are used to secure the lamina plate assembly to a vertebra.

The present invention provides spinous process implant and associated methods. In one aspect of the invention the implant limits the maximum spacing between the spinous processes. In another aspect of the invention, a spacer has at least one transverse opening to facilitate tissue in-growth. In another aspect of the invention, an implant includes a spacer and separate extensions engageable with the spacer. In another aspect of the invention, instrumentation for inserting the implant is provided. In other aspects of the invention, methods for treating spine disease are provided.

Provided are methods and systems for enlarging a spinal canal of a vertebra. Using the methods and systems disclosed the spinal canal of the vertebra is enlarged by cutting the posterior arch portion of the vertebra to create one or two implant receiving spaces in the posterior arch portion. The cutting of the posterior arch portion is completed through a minimally invasive approach. Once cut, the detached portion of the posterior arch portion is repositioned and an implant is positioned in the implant receiving space of the posterior arch portion to thereby enlarge the spinal canal such that the spinal cord is no longer compressed. The insertion of the implant is also completed through a minimally invasive approach.

Disclosed are laminoplasty devices and systems, kits that include such laminoplasty devices or systems or components thereof; and methods of assembling and using such laminoplasty devices and systems. In particular, articulating laminoplasty devices are provided that allow lamina plates to be adjusted angularly and transitionally with respect to a cage connecting the lamina plates. Also provided are laminoplasty plates that are configured so as to be assembled with a bone graft housing, and which provide an opening configured to facilitate bone graft insertion into the housing. Further provided are expandable laminoplasty fixation systems that include a lateral mass plate, a lamina plate and a set screw that when screwed and unscrewed, allows one to contract and expand the plates with respect to one another.

A biologically implantable device including a spacer body and fasteners for fixing the spacer body in place between vertebrae, and a method for use of the device to improve intervertebral spacing and correct foraminal stenosis, and to immobilize facet joints and promote fusion of adjacent vertebrae to each other. A drill guide may be used in providing bores in the facet joints to receive the fasteners.

Laminoplasty methods for the treatment of spinal stenosis are disclosed, as well as surgical instruments and a surgical implant related to these methods. One of the surgical instruments is a scalpel for minimally invasive surgical procedure, including a longitudinal shaft, a grip and a dissector. Another instrument is an osteotome including two jaws being pivotable around a first axis and facing each other. The surgical implant is useful for stabilizing a lamina of a vertebra of a patient and comprises a mounting flange including a hole for accommodating a bone screw for attachment to an articular process of the vertebra, and three clamping flanges.

In one embodiment, the present invention is a laminal implant including: a first body including a first flange adapted to engage a first lamina end, a tab and a receiving channel; and a second body including a second flange adapted to engage a second lamina end, and a plurality of teeth adapted to engage the tab, at least a portion of the second body adapted to be positioned within the receiving channel, the first and second bodies adapted to slideably engage one another.