Tibiotalocalcaneal arthrodesis using a dynamically locked retrograde intramedullary nail

Area of Science:

• Orthopedic surgery
• Foot and ankle reconstruction
• Biomechanical fixation

Background:

• Tibiotalocalcaneal arthrodesis is a critical salvage procedure for complex hindfoot issues.
• Indications include Charcot arthropathy, talar osteonecrosis, and failed ankle replacements.
• Evaluating a specific dynamic retrograde intramedullary nail technique is essential.

Purpose of the Study:

• To assess the efficacy of dynamic retrograde intramedullary nailing for tibiotalocalcaneal fusion.
• To analyze fusion rates, radiographic outcomes, and complications associated with this technique.

Main Methods:

• A single surgeon performed 33 consecutive tibiotalocalcaneal fusions using a dynamic retrograde intramedullary nail.
• Data collected included time to fusion, nail impaction, nail-tibial angle, and complications.
• Average follow-up was 14 months.

Main Results:

• An 88% fusion rate (29/33 feet) was achieved at an average of 3.7 months.
• Average nail impaction was 2.3 mm.
• Cortical hypertrophy occurred in 13/27 patients; a trend towards higher nonunion with increased nail-tibial angle was observed.

Conclusions:

• Dynamic retrograde intramedullary nailing provides effective stabilization for tibiotalocalcaneal fusions.
• This method is a valuable option for complex hindfoot reconstructions.
• Careful attention to nail-tibial angle may be important for optimizing union rates.