MPFL Reconstruction
🔧 Technique — The hybrid Knee FiberTak anchors and BioComposite FastThread interference screws are used in MPFL reconstruction to replicate the native shape of the medial patellofemoral ligament, providing stability in both flexion and extension.
⚙️ Stability — This technique effectively limits rotation throughout the range of motion, helping to minimize postoperative instability and allowing for more aggressive rehabilitation protocols.
🛠️ Fixation — The use of a femoral template ensures proper placement of the graft in the femur, providing a static fixation point that equalizes tension across the graft in flexion and extension.
🔩 Components — The system includes 3.9 mm BioComposite SwiveLock anchors for patellar fixation and a 6 mm × 20 mm BioComposite FastThread interference screw for femoral fixation.
📈 Outcomes — The technique allows for earlier return to activity and minimizes stress across the patellofemoral joint, which is crucial for successful MPFL reconstruction.
Technique Details
🔍 Anatomic Technique — The double-bundle technique used in MPFL reconstruction aims to closely mimic the natural anatomy of the ligament, enhancing joint stability.
📏 Femoral Template — A femoral template is used to ensure precise graft placement, which is critical for maintaining proper tension and function.
🔗 Hybrid Anchors — The Knee FiberTak anchors are designed to provide secure fixation with minimal bone removal, reducing the risk of complications.
🔧 Interference Screws — The BioComposite FastThread screws are used for femoral fixation, offering strong and reliable graft attachment.
🧩 Component Integration — The system is designed to work seamlessly together, providing a comprehensive solution for MPFL reconstruction.
Clinical Benefits
🏃♂️ Early Activity — Patients can often return to activity sooner due to the stability provided by the reconstruction technique.
🩺 Reduced Instability — The technique minimizes postoperative instability, which is a common concern in MPFL reconstruction.
💪 Aggressive Rehab — The stability and fixation provided allow for more aggressive rehabilitation protocols, improving recovery times.
🔄 Range of Motion — The technique effectively limits rotation, maintaining a natural range of motion and reducing stress on the joint.
🛡️ Joint Protection — By equalizing tension across the graft, the technique helps protect the patellofemoral joint from excessive stress.
The technique, if accomplished directly and anatomically, can also allow for more aggressive rehabilitation protocols and earlier return to activity.
Comparative Studies
📊 Biomechanical Studies — Studies have shown that suture anchors are a viable alternative to interference screws for femoral fixation, with comparable load to failure.
🔬 Load to Failure — No significant difference in load to failure was observed between interference screws and suture anchors, indicating both are effective.
📈 Stiffness Comparison — Interference screws showed higher stiffness compared to suture anchors, which may influence the choice of fixation method.
🧪 Failure Modes — Different failure modes were observed, with interference screws failing by graft pullout and suture anchors by anchor pullout.
🔍 Clinical Relevance — These findings suggest that both methods are biomechanically viable, allowing for flexibility in surgical technique.