摘要:
Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.
摘要:
Apparatus to facilitate reduction and fixation of a fracture by drawing together the fracture by applying tension to a reduction wire are disclosed. These apparatus include a bone plate for the fixation of a fractured bone having a plurality of fastener openings so that the bone plate may be secured by a plurality of fasteners across a reduced fracture to fixate a reduced fracture. The bone plate is configured with a channel that receives a reduction wire so that the reduction wire may extend between the bone plate and a reduction wire mount such as a bone screw. Methods of use of the present invention include fastening the bone plate to a first side of the fracture, fastening a reduction wire mount to a second side of the fracture, fastening a reduction wire to the reduction wire mount, receiving the reduction wire in the channel, applying tension to the reduction wire to draw the bone plate and the reduction wire mount together thereby reducing the fracture, and fixating the fracture by fastening the bone plate to the second side of the fracture.
摘要:
A prosthesis replaces all or a portion of a natural facet joint on a vertebral body. The prosthesis has a prosthesis body that accommodates fixation to the vertebral body at or near a pedicle and without support by a lamina. The prosthesis also has an artificial facet joint structure carried by the prosthesis body. The artificial facet joint structure is adapted and configured to replace all or a portion of a natural facet joint.
摘要:
Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.
摘要:
An anterior cervical plating system having moveable plate segments to vary the overall length of the plate, moveable to allow and/or cause intersegmental compression of vertebral bodies, and coupled together by a non-detachable fastener. The plating system includes locking elements, each locking element adapted to lock at least two bone screws to the plate, instrumentation, and method for installation thereof. The plating system is capable of both passive and active dynamization and the ability to produce the former from the latter.
摘要:
Anatomically contoured anterior cervical plates with bone ingrowth surfaces, providing for intersegmental compressive preloading, and a rigid and locked interface to all of the bone screws, with those engaging the vertebrae deployed in highly convergent pairs. The bone screws have a tapered self-tapping leading end, an increasing root diameter with a generally constant outer diameter with a thread that is narrow and sharp throughout and an enlarged head portion capable of an interference fit to the receiving holes of the plate. Instrumentation consists of plate holders, a compression apparatus and a pilot hole forming device that interlocks with the plate. Methods for spinal compression and bone hole preparation are provided.
摘要:
Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.
摘要:
A fixation system includes a device having a plurality of like threaded peg holes. Two types of pegs are couplable within the peg holes. One type is multidirectional, and the shaft can be oriented at various angles relative to an axis extending through the peg hole. Another peg is directionally-fixed and limited to extension through the peg hole in a single direction; i.e., coaxial with the peg hole axis. The peg holes and both types of pegs are adapted such that either of the pegs can be received within any of the peg holes of the device.
摘要:
Vertebra bodies in the human spine are stabilized through the use of minimally invasive surgery for the implantation of an elongate implant plate assembly having spaced first and second screw receiving socket elements which are configured for respective attachment to first and second spaced vertebra with the aid of bone fixation screws and these elements are slidably received with respect to each other for adjustably changing the distance between the screw receiving socket elements. A lock assembly is also provided for selectively locking the first and second screw receiving elements from further relative sliding. An elongate insertion tool is releaseably secured to the plate assembly, and the insertion tool is configured for manipulating the plate assembly as a whole and for remotely manipulating the screw receiving socket elements for adjusting the distance therebetween. The plate assembly is inserted through an incision and manipulated and advanced with the insertion tool to provide minimally invasive insertion, and after fixation of the implant assembly with bone fixation screws is further utilized by remote manipulation to adjust the degree of compression on the vertebrae, and thereafter the implant is locked in position to prevent further relative movement between the screw receiving elements of the plate assembly.
摘要:
A fixation device is provided which includes a proximal nail portion and a distal plate portion. The nail portion includes a flexible tapered section, and a rigid distal section larger in diameter and is adapted to be inserted into a medullary canal of a fractured bone. The plate portion has a low, narrow profile and includes three longitudinally displaced peg holes, each of which is adapted to orient a peg in a different orientation from the others. The plate portion is adapted to be positioned on the outside of a fractured bone when the nail portion is within the medullary canal. The device provides the benefits of both an intramedullary nail and a bone plate in a single device. The fixation device permits a minimally invasive treatment of the metaphyseal fractures that may otherwise be undertreated.