Dynesys system (Zimmer Spine, Warsaw, IN) is composed of two titanium pedicle screws connected by a cylindrical polycarbonate urethane. Conquest Hospital. Hastings, United Kingdom. Dynesys® and Dynamic Neutralization® are trademark of Zimmer GmbH. Dynesys® is developed in partnership. The Dynesys® Dynamic Stabilization System (Zimmer Inc., Warsaw, IN, USA) is one of the most frequently used posterior dynamic stabilization.
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Zimmer Dynesys (Implant ) –
Non-fusion system for the spine The Dynesys System from Zimmer is an alternative method of treatment for degenerative diseases of the lumbar spine. The following adverse effects have been reported: Continued surveillance for new or recurrent sources of infection should be continued as long as the device is in place. Biomechanics of the Dynesys System The Dynesys Dynamic Stabilization System combines the surgical approach of traditional spinal fusion with the philosophy of dynamic stabilization, using flexible materials to stabilize the spine while preserving anatomical structures.
In addition to the above specified warnings and precautions, general surgical risks should be explained to the patient prior to surgery.
This is due to the technically demanding procedure presenting a risk of serious injury to the patient. Holds the segments in a more natural anatomic position using non-rigid materials Preserves natural anatomical structures as much as possible Constrains spinal motion “internal splint” Zimmer Biomet Spine offers three dynamic stabilization options: Acta Orthop Belg In the present study, the ODI and VAS were significantly improved in both groups at the final follow-ups; however, the differences between the two groups were not significant.
In the present study, the incidence of asymptomatic screw loosening was The inclusion criteria and indications were: Contraindications include but are not limited to the following:. They noted that the Dynesys system might be preferable to lumbar fusion for degenerative lumbar disease because it decreased back and leg pain. Hernia of the nucleus pulposus, ruptured disc or degeneration in, above or below the operated segment.
These patients should be informed of this increased risk and counselled to discontinue tobacco use prior to and immediately after surgery. The Dynesys Dynamic Stabilization System was designed as a more physiologic system of spine stabilization.
Zimmer Spine | Dynamic Stabilization System, Spine Implant System, Spine Stabilization
The segmental ROM was calculated as the difference between the segmental angulations in flexion and extension. The cookie settings on this website are currently set to allow certain types of cookies.
The objective of this study is to compare the clinical and radiographic outcomes of Dynesys and PLIF for lumbar degenerative disease. Many studies have reported positive outcomes for patients treated with the Dynesys system [ 4514 ]. Published online Jan Moreover, increased range of movement ROM at adjacent segments after spinal fusion may increase the risk for adjacent segment degeneration ASD [ 1 ].
Zimmer Dynesys (Implant 384)
It has also been argued that using pedicle-based zimmed devices can promote better fusion because of micromovements across endplates, and can protect from implant failure because of better load sharing through the implant. This problem can be resolved by the development of dynamic stabilization techniques.
The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Fracture, resorption, damage or penetration of a spinal bone. The disc height was determined on lateral radiographs by calculating the mean of anterior and posterior disc height.
Dynesys® Dynamic Stabilization Product Family (LIS, Top-Loading, & Zimmer® DTO®)
Contraindications include but are dtnesys limited to the following:. Flexion When the patient bends backward: The surgical duration and intraoperative blood loss were both significantly less in the Dynesys group, as compared to those in the PLIF group. The reason for the shorter surgical duration in the Dynesys group was that there was no need for endplate and autogenous bone preparation or bone grafting.
The system is intended to be used without bone graft for the following indications. Standard laminectomies were performed cautiously to preserve the facet joints. Schaeren S, Broger I, Jeanneret B Minimum four-year follow-up of spinal stenosis with degenerative spondylolisthesis treated with decompression and dynamic stabilization. Patients who smoke have been shown to have an increased incidence of zimmrr. Urinary retention or loss of bladder control or other types of disorders of the urogenital system e.
However, relatively few studies have compared clinical and radiographic outcomes between the Dynesys system and posterior lumbar interbody fusion PLIF [ 6 ].
They also noted that only the segmental ROM at the index level decreased significantly in the PLIF group, while there was no significant difference in the Dynesys group.
Mean patient age, gender, and follow-up time were similar between groups. Results The mean follow-up time in the Dynesys group was A senior surgeon resolved disagreements in measurements. The screw heads interact with the spacer The spacer resists the compressive load Overall extension is limited. Legaye J [ Unfavorable influence of the dynamic neutralization system on sagittal balance of the spine ].
Discussion The result of this study indicated that after a minimum follow-up of 4 years, both Dynesys and PLIF improved clinical outcomes for lumbar degenerative disease. Prior to surgery, patients should be made aware of the following possible adverse effects in addition to the potential for additional surgery to correct these effects:.
Pedicle-based dynamic devices were first designed to stabilize the abnormal segment and to unload degenerated discs and facet joints, while maintaining the same level of normal motion.
The intended use for each level is as specified for each system. Zimmer Biomet Spine, Inc.
For product information, including indications, contraindications, warnings, precautions, potential adverse effects and patient counseling information, see the package insert and information on this website.