Subtalar Joint Distraction Arthrodesis Utilizing a Titanium Truss: A Case Series

Area of Science:

• Orthopedic surgery
• Biomaterials science
• Regenerative medicine

Background:

• Subtalar joint distraction arthrodesis is crucial for complex deformities like posttraumatic arthritis.
• Traditional autograft and allograft methods face challenges including donor site morbidity, limited graft size, high nonunion rates, and graft collapse.
• Addressing frontal and sagittal plane malalignments is essential to prevent ankle instability and wear.

Observation:

• This case series evaluates tantalum truss technology for subtalar joint distraction arthrodesis.
• Tantalum is recognized for superior strength and bone incorporation compared to conventional bone grafts.
• Two cases utilized tantalum technology to span large bone defects.

Findings:

• Both cases demonstrated effective graft incorporation with no loss in height over time.
• Patients experienced an earlier return to activity compared to those treated with autograft or allograft wedges.
• Tantalum truss technology appears to mitigate common complications associated with traditional grafts.

Implications:

• Tantalum truss technology presents a viable alternative for subtalar joint distraction arthrodesis, potentially improving patient outcomes.
• Further research with larger patient cohorts is warranted to validate these findings.
• This technology could enhance the treatment of complex foot and ankle conditions requiring bone defect bridging.