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Radiographic correction of stage III posterior tibial tendon dysfunction with a modified triple arthrodesis
Siddhant K Mehta1, R Bradley Kellum, George H Robertson
1Department of Orthopaedic Surgery & Rehabilitation, University of Mississippi Medical Center, Jackson, MS, USA.
Foot & Ankle International
|July 9, 2013
Summary
A modified triple arthrodesis reliably corrects deformities in stage III posterior tibial tendon dysfunction (PTTD). This surgical fusion procedure demonstrated significant radiographic improvements and high correction rates in patients with PTTD.
Area of Science:
- Orthopedic Surgery
- Foot and Ankle Reconstruction
- Biomechanical Analysis
Background:
- Stage III posterior tibial tendon dysfunction (PTTD) literature supports surgical fusion.
- This study evaluates radiographic correction after a modified triple arthrodesis for stage III PTTD.
Purpose of the Study:
- To report radiographic correction following a modified triple arthrodesis in patients with stage III PTTD.
- To assess the reliability and reproducibility of radiographic measurements post-surgery.
Main Methods:
- Retrospective study of 21 patients (22 feet) undergoing modified triple arthrodesis.
- Blinded review of pre- and postoperative weight-bearing radiographs.
- Measurement of multiple radiographic angles and distances, with statistical analysis and interobserver reliability assessment.
Main Results:
- Significant improvement (P ≤ .001) in all measured radiographic parameters post-arthrodesis.
- High reproducibility for medial cuneiform to floor distance, talonavicular coverage angle, and lateral talo-first metatarsal angle.
- Postoperative correction to normal values achieved in 90.9%–100% of feet for key parameters.
Conclusions:
- Modified triple arthrodesis provides reliable and reproducible correction for rigid stage III PTTD.
- The procedure effectively addresses the complex deformities associated with this condition.