DynaNails Cut Nonunion in Tibiotalocalcaneal (TTC) Fusions

TTC arthrodesis is vital for treating severe hindfoot/ankle issues. Dynamic compression (DC) nails may outperform static compression (SC) nails in reducing the historically high rate of nonunion.

In a recent study, a national readmissions database was used to compare outcomes of 311 TTC fusions, consisting of 149 using DC and 162 using SC. The DC tool used was the Dynanail by Enovis. After matching for age, sex, and comorbidities, researchers evaluated the rates of complication and readmission.

Key findings

• DC nails significantly reduced the rate of nonunion (6.0% vs. 17.3%, P = 0.002).

• Overall complication rates were similar between the two groups (DC: 30.2% vs. SC: 35.2%).

• There were no significant differences in readmission rates.

Why it matters

DC nails, powered by nitinol for continuous compression, offer a clear biomechanical edge. This is evidenced by their lower nonunion rates. While total complications were comparable, the reduced failure to fuse is a major clinical win.

DC nails show strong promise in TTC fusion procedures. Future research should evaluate long-term outcomes, analyzing cost effectiveness and developing patient-specific treatment protocols.