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Pulley reparation with direct suture technique: A mechanical study
Emile Balandier1, Laurent Vigouroux1, Jean-Louis Milan1
1Aix Marseille Univ, CNRS, ISM, Marseille, France.
Clinical Biomechanics (Bristol, Avon)
|March 23, 2025
Summary
Direct suture repair of finger pulleys offers good stability for regeneration but lacks immediate resistance. This minimally invasive technique avoids autograft complications for climbing injury recovery.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Biomechanics
Background:
- Finger pulley ruptures are common climbing injuries requiring surgical intervention.
- Conventional pulley reconstruction uses autografts, leading to potential side effects.
- Direct suture repair presents a minimally invasive alternative without autograft use.
Purpose of the Study:
- To evaluate the post-operative stability of finger pulleys repaired with direct suture.
- To compare the biomechanical properties of directly sutured pulleys against native pulleys.
Main Methods:
- Rupture tests were conducted on 17 cadaver finger pulleys (native and directly sutured).
- Tensile force and fingertip force were measured during flexor tendon traction.
- Force parameters for A2 and A4 pulleys were calculated.
Main Results:
- A significant difference in force was observed between native (334.9 N) and sutured (59.0 N) A2 pulleys.
- All other measured parameters also showed significant differences between native and repaired pulleys.
Conclusions:
- Direct suturing facilitates proper pulley positioning for regeneration and provides good stability.
- The direct suture technique does not offer immediate resistance post-repair.
- This method may offer a viable alternative to autograft reconstruction for pulley injuries.
