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A Baseball Suture Technique With Single Bone Tunnel and Button Fixation for Flexor Digitorum Profundus Avulsion
Zoe K Papadopoulou1, Vasilios Raoulis1, Konstantinos N Malizos1
1Department of Anatomy, Faculty of Medicine, University of Thessaly, Larissa, GRC.
Cureus
|July 17, 2026
Summary
This study introduces a new surgical technique for flexor digitorum profundus (FDP) avulsion injuries. The method uses a baseball suture and bone tunnel for secure tendon fixation, minimizing bone damage.
Area of Science:
- Orthopedic Surgery
- Hand Surgery
- Musculoskeletal Research
Background:
- Flexor digitorum profundus (FDP) avulsion injuries present challenges for secure tendon fixation.
- Achieving strong tendon purchase on the distal phalanx while minimizing osseous compromise is critical.
- Existing methods may lead to tendon trauma or significant bone disruption.
Purpose of the Study:
- To present a novel surgical technique for FDP avulsion repair.
- To enhance tendon purchase and minimize osseous disruption during repair.
- To offer a simple, reproducible, and mechanically advantageous surgical option.
Main Methods:
- A novel technique employing a baseball suture configuration.
- Utilizing a single transosseous bone tunnel for tendon advancement.
- Incorporating dorsal pullout button fixation with a protective interface.
Main Results:
- The technique provides stable fixation with minimized osseous disruption.
- A multi-pass baseball suture enhances tendon purchase.
- The protective interface reduces pressure-related complications at the nail apparatus.
Conclusions:
- The proposed technique offers a simple and reproducible method for FDP avulsion repair.
- This approach may provide mechanical and practical advantages over existing methods.
- Further biomechanical and clinical studies are warranted to validate effectiveness.
