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Tarsometatarsal bone remodelling after subtalar arthroereisis
Matthias Braito1, Maria Radlwimmer1, Dietmar Dammerer1
1Department of Orthopedic Surgery, Medical University of Innsbruck, Austria.
Journal of Children'S Orthopaedics
|June 26, 2020
Summary
Subtalar arthroereisis significantly alters tarsometatarsal bone morphology and improves hindfoot/midfoot alignment in flexible juvenile flatfoot. This suggests bone remodeling contributes to the treatment
Area of Science:
- Orthopedic surgery
- Pediatric orthopedics
- Foot and ankle biomechanics
Background:
- Flexible juvenile flatfoot is a common pediatric condition.
- Subtalar arthroereisis is a surgical option for correction.
- The precise mechanism of deformity correction remains unclear.
Purpose of the Study:
- To investigate the effect of subtalar arthroereisis on tarsometatarsal bone morphology.
- To evaluate changes in hindfoot and midfoot alignment post-procedure.
Main Methods:
- Retrospective review of 26 patients (45 feet) with flexible juvenile flatfoot.
- Radiological assessment of tarsometatarsal angles and alignment parameters.
- Mean follow-up of 19.4 months.
Main Results:
- Significant changes in tarsometatarsal bone morphology (p < 0.001).
- Improved distal medial cuneiform angle and medial cuneo-first metatarsal angle (AP view).
- Improved hindfoot and midfoot alignment parameters (p < 0.001).
Conclusions:
- Subtalar arthroereisis induces tarsometatarsal bone remodeling.
- Bone remodeling likely contributes to the efficacy of subtalar arthroereisis for flexible juvenile flatfoot.
- Supports existing theories on the mechanism of surgical correction.
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