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Isolated Subtalar Distraction Arthrodesis Using Porous Tantalum: A Pilot Study
Eustratios A Papadelis1, Panagiotis K Karampinas2, Eustratios Kavroudakis1
1Third Department of Orthopaedics, University of Athens Medical School, KAT Hospital, Athens, Greece.
Background:
During reconstructive procedures of the hindfoot, a structural graft is often needed to fill gaps. To eliminate donor site morbidity and limited availability of autografts, porous tantalum was used.
Methods:
Eighteen patients who underwent subtalar joint distraction arthrodesis by means of trabecular metal augment were reviewed retrospectively. The results were evaluated clinically, with the American Orthopaedic Foot & Ankle Society (AOFAS) score and the visual analog scale (VAS) for pain, and were assessed radiologically. The mean follow-up period was 18 months.
Results:
Computed tomography showed sound fusion. There was a marked increase in AOFAS scores and a decrease in VAS scores. Arthrodesis was achieved in all cases with no major postoperative complications. Radiographically, there was a marked increase in all measured parameters (talocalcaneal angle, talocalcaneal height, talar declination angle), and the intraoperatively achieved correction was maintained at the last follow-up visit.
Conclusion:
Our data suggest that porous tantalum may be used as a structural graft option for subtalar arthrodesis.
Level Of Evidence:
Level IV, retrospective case series.
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