The Hintermann Series H2 Total Ankle Replacement System (H2) manufactured by DT MedTech, LLC is now cleared for sale in the U.S.
Hintermann H2 Ankle Replacement Cleared in U.S.

The H2 is a semi-constrained, total ankle replacement prosthesis developed by Professor Beat Hintermann, M.D., a foot and ankle surgeon based in Liestal, Switzerland.
The system is indicated for use with bone cement to treat ankle arthritis in either primary or revision surgery of ankle joints damaged by systemic arthritis of the ankle (e.g., rheumatoid arthritis, hemochromatosis), primary arthritis (e.g., degenerative disease), and secondary arthritis (e.g., post-traumatic, avascular necrosis).
It is also indicated for patients with a failed total ankle replacement or non-union/mal-union of the ankle arthrodesis, provided that sufficient bone stock is present.
In a November 8, 2017 announcement of the FDA 510(k) clearance, the company said it anticipates a limited release of the system in early December 2017 outside the U.S., as it has already received the CE mark for the device, along with registrations in other markets. The company said it will be focusing on training, sales, and distribution of the system in all markets through DT MedTech International Limited, DTM’s subsidiary and distribution arm located in Dublin, Ireland, in the upcoming months.
DT MedTech maintain offices in Baltimore, Maryland; Dublin, Ireland; Saint-Louis, France; and Liestal, Switzerland

Discussion
This is a fascinating development. In my practice we've seen similar outcomes with the revised protocol. The key differentiator seems to be patient selection criteria. Has anyone else noticed the correlation with BMI thresholds?
Great point. I'd push back slightly on the conclusion, the sample size in the cited study is too small to draw population-level inferences. That said, the directional signal is compelling and worth a larger RCT.
We implemented a similar approach last year. Early results are promising but we're still gathering 12-month follow-up data. Happy to share our protocol if anyone is interested.
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