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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The implant was fashioned out of silicone into the shape of a dumbbell to off-load the facet joints and decrease the intradiscal pressure.
Interspinous fusion devices contrast with interspinous distraction devices also called spacers ; the latter are used alone for decompression and may not be fixed to the spinous processes. The insertion of increasing size trocars allows for a gradual distraction of the interspinous area to measure the optimal decompression technoque prevent overdistraction.
The Aspen device has not been tested for heating or migration in the MR environment. 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 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.
In all these studies, while the short-term results are encouraging, it is not possible to reach scientific conclusions related to long-term health outcomes.
The Aspen device has not been tested for safety and compatibility in the magnetic resonance MR surbical.
Due to its large contact area with the spinous processes and its near-physiologic modulus, it ensures a minimal surgicql of subsidence Figures 8 and 9. The implant can be removed after bony healing. Because the implant was designed to be placed without removing any bony or soft tissues, the technique may be performed under local anesthesia. The purpose of this paper is to provide a comprehensive overview on interspinous implants, their mechanisms of action, safety, cost, and effectiveness in the treatment of lumbar stenosis and degenerative disc diseases.
Any other medical or surgical condition which would preclude the potential benefit of spinal surgery, such as the presence of congenital abnormalities, elevation of sedimentation rate unexplained by other diseases, elevation of the white blood count WBCor a marked left shift in the WBC differential count.
Consequently, the interspinous distance should be used only as auxiliary indicator.
BioMed Research International
The Aspen Device is an alternative to pedicle screws in achieving fusion; it delivers surigcal posterior stabilization and renewed anatomical alignment through a minimally invasive implant and can be used in single- or multilevel constructs Figure The inferior aspect of the spinous processes must be trimmed, if necessary, to facilitate insertion of the interspinous spacer.
More recently, Bowers et al. The Aspen system is indicated in the treatment of the following conditions: Coflex F has a secure anchorage to the spinous processes through rivet fixation.
The key selection criteria were and are that patients symptoms must be relieved by flexion of the lumbar spine. Any abnormality present which affects the normal process of bone remodeling including, but not limited to, severe osteoporosis involving the spine, bone absorption, osteopenia, active infection at the site or certain metabolic disorders affecting osteogenesis. Subscribe to Table of Contents Alerts.
The intervertebral level to be treated is identified by fluoroscopy. It is anatomical shape consists of two concave shaped ends, and it is core is an elastic spring which can be deformed. The two lateral wings prevent migration anteriorly or laterally, and the supraspinous ligament prevents the implant from migrating posteriorly.
Aspen MIS Fusion System | Aspen MIS Fusion System by Zimmer Biomet
The BacJac is a minimally invasive device manufactured from PEEK, implanted through a unilateral surgical approach that reduces operating room and patient recovery time, while surggical future surgical options. The X-Stop device Medtronic, Tolochenaz, Switzerland was approved by the US Food and Drug Administration in for the treatment of neurogenic intermittent claudication secondary to lumbar stenosis [ 38 ].
A second generation of the Wallis device, slightly different in shape, and composed of polyetheretherketone PEEKwas used with other surgical procedures, to reduce pain severity in cases of moderate disc degeneration, central spinal stenosis, and significant lower back pain. The images are subsequently evaluated to identify load-induced changes. X-Stop is the only IDP device with class I data and a prospective randomized control trial supporting its safety and efficacy compared to the nonoperative treatment.
Despite favorable results, Senegas thought that the device could be improved. The authors report no conflict of interests tecgnique the materials and methods used in this study or the findings specified in this paper.
However, interspinous devices are presented also as a techniue option for treating a vast yechnique of lumbar pathologies ranging from facet syndrome and discogenic low back pain to degenerative spinal stenosis, discopathy, and lumbar instability.
After a solid fusion occurs, the system serves no functional purpose and should be removed. It is of paramount importance to keep the supraspinous ligament intact. 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 of care for surgical decompression of lumbar spinal stenosis.
The clinical guidelines from the NASS North American Spine Society suggested that there is insufficient evidence at this time to make a recommendation for or against the placement of an interspinous process spacing device in patients with lumbar spinal stenosis. The exhaustive mechanism of the intradiscal pressure interaction with the neural structures is today not clarified.
First study published examining the cost of laminectomy versus ISP surgery was in [ 40 ]. View at Google Scholar F. Never reuse any implant even if it appears unmarked or undamaged. It can be used alone or in combination with.