Abstract
Subtalar joint distraction arthrodesis has been recommended for the treatment of conditions
such as nonunion or malunion of subtalar joint arthrodesis posttraumatic arthritis.
Both conditions are difficult to treat, because the deformities created in the frontal
and sagittal planes of these conditions are complex. If these malalignments are not
addressed, ankle joint instability and wear occur over time. In general, either autograft
or allograft bone has been used to perform distraction arthrodesis of the subtalar
joint. Although studies have shown successful use, there have been complications.
Autografts have resulted in donor site morbidity and limitations on graft size, and
allografts have shown high nonunion rates. Both autografts and allografts have shown
graft collapse over time. Recent literature has discussed the use of tantalum technology
to span large defects in bone healing. Studies have shown that tantalum provides superior
strength and bone incorporation compared with autografts and allografts. This case
series presents 2 cases in which tantalum truss technology was used for distraction
arthrodesis. Although this series is limited in patient numbers, both cases show effective
graft incorporation with no loss in height over time and earlier return to activity
compared with previous studies that used autograft and allograft wedges.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: April 20, 2019
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
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© 2018 by the American College of Foot and Ankle Surgeons. All rights reserved.
