Retensionable All-Suture Anchor Extensor Mechanism Repair

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Sports Medicine

Background:

• Extensor mechanism tendon ruptures (quadriceps and patellar) are severe injuries requiring surgical repair.
• Current repair techniques include suture anchor and transosseous methods, with reported failure rates up to 21%.
• There is a need for improved repair strategies to enhance outcomes and reduce failure rates.

Purpose of the Study:

• To describe and evaluate a novel surgical technique for extensor mechanism repair using knotless retensionable all-suture anchors.
• To assess the biomechanical advantages and clinical outcomes of this technique.

Main Methods:

• The technique involves creating transosseous tunnels and utilizing retensionable all-suture anchor loops.
• Sutures are passed through the tendon with Krakow stitches and secured via anchors.
• The construct is tensioned and adjusted to reduce the tendon and minimize creep.

Main Results:

• Knotless retensionable all-suture anchors demonstrated superior biomechanical properties compared to traditional repairs.
• This method showed significantly less gap formation, higher load-to-failure, and greater stiffness.
• Adjustable anchors allowed for intraoperative and postoperative retensioning, minimizing laxity and enabling earlier motion.

Conclusions:

• Transosseous retensionable all-suture anchors represent a high-strength alternative for extensor mechanism repairs.
• This technique offers advantages in minimizing creep and potentially reducing complications associated with hardware.
• The adjustability of the anchors may lead to improved patient outcomes and faster rehabilitation.