Abstract
Knee Extensor Mechanism Disruptions: A Review
Highlights
The knee’s extensor mechanism (EM) is formed by a unique linkage of the quadriceps and patellar tendons through the patella
Quadriceps and patellar tendon ruptures comprise less than half of EM failures and are usually amenable to predictable repair and recovery regardless of repair method
Results are inconsistent with chronic patellar tendon (PT) ruptures or re-ruptures[55]
Summary
The knee’s extensor mechanism (EM) is formed by a unique linkage of the quadriceps and patellar tendons through the patella. Functional knee extension and normal gait are possible. EM injuries are relatively rare but can be disabling to patients and as challenging for surgeons to manage. New techniques are being developed to treat complex EM disruptions, especially for chronic injuries or failed primary repairs. The goal of this review is to highlight current management guidelines and evaluate the effectiveness of novel techniques being used for complex EM ruptures
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