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On-top and side-to-side plasties for thumb polydactyly
Noha M Al-Qattan1, Mohammad M Al-Qattan1
1From the Division of Plastic Surgery, King Saud University, Riyadh, Saudi Arabia.
International Journal of Surgery Case Reports
|August 21, 2017
Summary
Surgical techniques "on-top" and "side-to-side" plasties for thumb duplication offer excellent functional outcomes. These methods provide good cosmetic results, enhancing hand function in complex cases of polydactyly.
Area of Science:
- Hand Surgery
- Pediatric Orthopedics
- Congenital Hand Anomalies
Background:
- Thumb duplication (polydactyly) presents complex surgical challenges.
- "On-top" and "side-to-side" plasties are reconstructive techniques for specific thumb duplications.
- Detailed long-term functional outcomes for these plasties are not well-documented.
Purpose of the Study:
- To report the detailed functional and cosmetic outcomes of "on-top" and "side-to-side" plasty techniques.
- To evaluate the efficacy of these surgical approaches in managing complex thumb duplications.
Main Methods:
- Case 1: Wassel type VI thumb duplication treated with "on-top" plasty, combining functional components of both duplicates.
- Case 2: Wassel type VII thumb duplication with zigzag deformity treated with "side-to-side" plasty, merging the thumbs proximally.
Main Results:
- Case 1 (10-year follow-up): Excellent cosmetic and functional results achieved with "on-top" plasty.
- Case 2 (3-year follow-up): Acceptable cosmetic and excellent functional results with "side-to-side" plasty.
Conclusions:
- "On-top" and "side-to-side" plasties are effective in managing specific types of thumb polydactyly.
- These techniques yield excellent functional results and satisfactory cosmetic outcomes.

