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Published on: December 5, 2025
Posterior interosseous free flap for finger re-surfacing
Zhao-hui Pan1, Ping-ping Jiang, Jian-Li Wang
1Orthopaedics Institute of Chinese PLA, 89th Hospital, 3770 Beigongxijie, Weifang, Shandong Province, PR China. panzhaohui89yy@yahoo.com.cn
Summary
The posterior interosseous free flap offers a valuable solution for finger soft-tissue reconstruction, demonstrating high flap survival and improved finger function. This method avoids sacrificing major hand arteries, reducing surgical morbidity.
Area of Science:
- Plastic Surgery
- Microsurgery
- Hand Surgery
Background:
- Soft-tissue defects of the finger present reconstructive challenges.
- The posterior interosseous free flap is explored as a potential solution.
Purpose of the Study:
- To evaluate the clinical experience and surgical methods of using posterior interosseous free flaps for finger soft-tissue coverage.
- To assess the outcomes of this reconstructive technique.
Main Methods:
- Twelve posterior interosseous free flaps were performed in 12 patients for various finger defects.
- Recipient vessels included proper digital artery and palmar subcutaneous vein, among others.
- Outcomes evaluated included flap survival, donor/recipient site appearance, two-point discrimination, and range of motion.
Main Results:
- All flaps survived completely with acceptable cosmetic results at donor and recipient sites.
- Average static two-point discrimination was 11 mm.
- Significant improvement in active total range of motion was observed postoperatively (p=0.042).
Conclusions:
- The posterior interosseous free flap is a valuable option for finger re-surfacing.
- It offers reduced morbidity and operative time by avoiding sacrifice of main hand arteries.
- Dual-paddle flaps allow reconstruction of separate regions.
