Studies indicate that MedShape's DynaNail® TTC for tibiotalocalcaneal fusion demonstrated successful arthrodesis in patients at high risk for nonunion, using less hardware and at a faster rate than nondynamized nails.
One study treated 86 TTC fusion patients with an intramedullary nail, 50 with DynaNail and 36 with a nondynamized intramedullary nail. Those in the DynaNail group achieved fusion significantly faster by 3.9 months, with a higher fusion rate than the nondynamized nail group, despite the DynaNail group having significantly more risk factors associated with nonunion.
Results from a retrospective case series study of 33 subjects indicated that 90% of all joint surfaces achieved fusion with DynaNail, despite using a conservative CT-based method of fusion assessment. The patient cohort included co-morbidities and complex pathologies such as diabetes, Charcot neuroarthropathy, tobacco use, revision of prior failed fusions and use of bulk structural allograft to fill large bony defects. These conditions have been reported to increase the risk for nonunion, with fusion rates as low as 50% in certain patient populations.
NiTiNOL-based DynaNail is designed to offer immediate dynamization to prevent stress shielding and maintain active compression during bone healing. The system is deployed with a single instrument tray that includes the DynaFrame CF™ carbon fiber-filled PEEK deployment system.
Source: MedShape, Inc.