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Triangular Osteotomies for Y-shaped Metacarpal Synostosis
1From the Department of Plastic, Reconstructive and Aesthetic Surgery, Trakya University Faculty of Medicine, Edirne, Türkiye.
Plastic and Reconstructive Surgery. Global Open
|August 6, 2026
Summary
This study details a rare Y-shaped metacarpal synostosis case. Surgical correction using triangular osteotomies achieved successful realignment and improved function.
Area of Science:
- Orthopedics
- Congenital Hand Anomalies
- Surgical Techniques
Background:
- Metacarpal synostosis is a rare congenital hand anomaly.
- It involves abnormal fusion between adjacent metacarpals, often the fourth and fifth.
- Atypical fusion patterns, like Y-shaped synostosis, are exceptionally rare.
Purpose of the Study:
- To report a rare case of Y-shaped synostosis between the third and fourth metacarpals.
- To describe the surgical correction technique used for this anomaly.
- To evaluate the outcomes of the surgical intervention.
Main Methods:
- A 17-year-old male patient with Y-shaped third and fourth metacarpal synostosis was treated.
- Surgical correction involved three triangular osteotomies.
- Fixation and stabilization were achieved using mini plates and screws.
Main Results:
- The surgical technique successfully corrected the angular deformity and digital shortening.
- Follow-up at 1 year demonstrated maintained correction.
- Satisfactory functional and cosmetic outcomes were reported post-surgery.
Conclusions:
- Triangular osteotomies represent a practical and reproducible surgical technique.
- This method is suitable for selected cases of Y-shaped metacarpal synostosis.
- The described approach offers effective correction for this rare congenital hand anomaly.
