Wedge Tarsectomy using Patient Specific Instrumentation for Complex Multiplanar Foot Deformity Reconstruction:

Bony correction in complex cavovarus deformities is often multiplanar. We examine our results following wedge tarsectomy (WT) using patient-specific instrumentation (PSI). This single-centre, prospective case series evaluated noncorrectable cavovarus feet undergoing PSI-guided WT. Accuracy of PSI guides/plans, operative duration, and adjunctive procedures were recorded. Weightbearing CT (WBCT) measurements and PROM scores were recorded preoperatively and postoperatively, with 1 year follow-up. Data was then statistically analysed. Eleven patients were included. Planned correction was achieved (two required minor intraoperative adjustments to the initial osteotomy and nine required adjunctive procedures). Mean operative time was 135 minutes. Postoperative improvements were significant radiologically and in MOxFW walking distance. All fused by 3 months, with no significant complications. PSI-guided wedge tarsectomy safely achieves predictable multiplanar corrections. Our unit’s experience has been excellent, with improvement in patients’ walking, particularly with larger deformity corrections. Level IV, prospective case series