ACL STRAIN PATTERNS WITH POSTEROMEDIAL CORNER INJURY

摘要: Introduction: By characterising ACL strain behaviour in intact and posteromedial deficient knees under a variety of external loading conditions the aim this work was to demonstrate whether corner insufficiency could increase an reconstruction graft. Materials Methods: 15 fresh cadaveric were mounted on materials testing machine. A miniature extensometer implanted onto anteromedial bundle (AMB) ACL. The loaded in: Anterior draw (150N), varus/valgus rotation (5Nm) internal/external at 0°, 15°, 30°, 60° & 90° flexion. structures – capsule, superficial MCL deep cut sequentially effect AMB measured. Results: Strain data for analysis available 11 knees: Tibial internal produced increased all angles knee flexion (p 0.05). tibia strain. With free rotate, highest 90 degrees (5.3%) lowest 0 (1.6%). Fixed tibial reduced by 150 N anterior drawer force angles. 6 Posteromedial Corner rotate or when locked rotation, cutting had no with applied tibia. However, 60 This difference however did not reach statistical significance. Conclusions: findings that division may cause there is significant load sharing peripheral ligamentous structures, suggests valgus rotational stresses patient lead graft, would otherwise have been restrained complex. It also therefore seem be appropriate recommend use collateral ligament brace post-operative period combining repair ACL, again prevent excessive graft strains.