A minimally invasive fusion technique may result in faster recovery screw fusion surgery, the coflex-F procedure often results in a Lanx® Aspen™ = %. Orthopedics Today | It is generally accepted that spinal fusion, in conjunction with decompression, produces better clinical outcomes in patients with. The Aspen line of spinal instrumentation products from Lanx is unique These devices can be used for less invasive surgery under certain circumstances. This technique gets a little difficult towards the lumbrosacral junction.
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While the rationale of their use in the treatment of spinal stenosis is clear, the role in the treatment of degenerative disc disease remains to be defined. The device consists of an interspinous spacer made of polyetheretherketone PEEKwhich limits extension, and two woven dacron bands that secure the implant and limit flexion Figure 4.
At two years, the Symptom Severity score for the X-Stop and the control group was In a magnetic resonance imaging cadaver study, Richards et al. Wilke compared four different interspinous implants Wallis, Diam, Coflex, and X-Stop in terms of their flexibility land intradiscal pressure technoque 8 ].
The device is made of PAEK, a biocompatible polymer, with stiffness similar to human cortical bone.
BioMed Research International
Current evidence is not sufficient to permit conclusions whether any beneficial effect from interspinous process decompression provides significant advantages over laminectomy, which is the current standard aepen care for surgical decompression of lumbar spinal stenosis. Proprietary spiked-plate design provides reliable bone fixation.
The authors requested further biomechanical and clinical evidence to strongly support the recommendation of a stand-alone interspinous fusion device or as supplemental fixation to expandable posterior interbody cages [ 58 ].
To define the appropriate implant size, trials are utilized. A successful result is not always achieved in every surgical case. In this case the supraspinous ligament was removed to check the appropriate distraction of the interspinous area.
Any implant implanted and then removed must be discarded. Flared Implant Optimized to address the unique and challenging anatomy at L5-S1, the Aspen Flared implant angle allows the implant to securely fixate at the laminar junction, rather than the more-parallel portion of the spinous processes. Contemporary models of fusion interspinous devices have evolved from spinous process wiring with bone blocks and early device designs as the Technnique plate: Each implant is preassembled on the inserter so it can be inserted without intermediate steps once tecbnique desired distraction is achieved.
Surgical technique was as follows: In another report, published by the same authors, the X-Stop group showed improvements in physical and mental component scores Quality of life SF compared to both baseline and control patients.
The wings of the device are folded as the inserter flanges are compressed, thus the DIAM is driven as far anterior as possible using the impactor. There are three different implant designs and a wide range of sizes for an optimum anatomical fit. Typically, patients complain about low back pain with or without pseudoradicular pain or dysesthesia. The first recommended indication for the implantation of an IPD was mild and moderate intermittent neurogenic claudication from spinal stenosis [ 36 ].
In a retrospective study done by Tuschel et al. If necessary, a decompressive procedure is performed.
The IDE investigational device exemption trial for the Coflex was a randomized multicenter noninferiority study that compared Coflex implantation with decompression and posterolateral fusion srgical pedicle screw fixation [ 64 ]. One proposed mechanism of action is unloading of the posterior annulus by distraction.
The clinical endpoint of these degenerations is the compression of neural structures at the level of the techniqeu foramina or of the spinal canal. Occasionally, hypertrophied facets that block entry into the anterior interspinous space are trimmed partially to enable anterior placement of the implant.
The BacJac is a self-deploying, nonfusion device which is tissue sparing and ligament preserving. The examination is performed in a neutral position and after loading with axial and sagittal T2-weighted scans. This device is an alternative to dynamic interspinous spacers for the treatment of spinal stenosis and to conventional means of fixation to achieve fusion.
The Aspen MIS Fusion System consists of a family of spinous process fixation devices designed for rigid, posterior fixation to promote fusion from T1 to S1.
The center of the device is traversed by two oval openings which serve to increase the flexibility of the device during compression loading of the lumbar segments. The BridgePoint is an advanced spinous process fixation system that was developed to address some of the disadvantages of traditional stabilization devices. Because the implant was designed to be placed without removing any bony or soft tissues, the technique may be performed under local anesthesia.
Aspen MIS Fusion System | Aspen MIS Fusion System by Zimmer Biomet
The flat polyester bands have an increased surface contact with the spinous processes, minimizing local concentration of contact stresses on the bone during flexion movements. The authors report no conflict of interests concerning the materials and methods used in this study or the findings specified in this paper. ZCQ success was achieved in Spinal anatomy or disease that would prevent implantation of the device, or cause the device to be unstable in situ, such as: The lateral X-ray image reveals the radiographic marker of the BacJac implanted at L4-L5 interspinous area.
In the first generation of the device, the wing clamps could be attached zspen the spinous processes by a suture passed through the central hole. They reported that surgiical X-Stop group showed a significantly larger foraminal cross-sectional area and height than the other two devices. Interspinous process spacers have been introduced as a possible alternative to spinal decompression and fusion surgicl the treatment of lumbar spinal stenosis and discogenic lower back pain.
Depending on the indication, the Wallis implant is placed either subsequent to a conventional posterior decompressive surgical procedure or in isolated fashion through a midline incision. Signs of local infection or inflammation. Patients must be informed of the precautions to be taken in their everyday life to guarantee a maximum implant service life.