Forces at the Anterior Meniscus Attachments Strongly Increase Under Dynamic Knee Joint Loading
نویسندگان
چکیده
Background: The anatomic appearance and biomechanical clinical importance of the anterior meniscus roots are well described. However, little is known about loads that act on these attachment structures under physiological joint movements. Hypotheses: As compared with uniaxial loading conditions static knee flexion angles or at very low flexion-extension speeds, more realistic continuous movement simulations in combination muscle force lead to significantly higher forces. This increase even pronounced a longitudinal meniscal tear after total medial meniscectomy. Study Design: Controlled laboratory study. Methods: A validated Oxford Rig–like simulator was used perform slow squat, fast jump landing maneuvers 9 cadaveric human joints, without simulation. strains lateral periphery respective attachments were determined 3 states: intact meniscus, tear, To determine forces, subsequent situ tensile test performed. Results: Muscle simulation resulted significant strain up 308% ( P < .038) 276%. corresponded increased forces acting anteromedial maximum 140 N, as during Meniscus influenced = .008) by meniscectomy drop Conclusion: Medial simulation, corroborating our hypothesis. Therefore, vitro tests applying combined speeds appear underestimate Clinical Relevance: data present study might help optimize anchoring allografts artificial substitutes tibial plateau. Furthermore, this first indicate reasonable minimum stability requirements regarding reattachment torn roots.
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ژورنال
عنوان ژورنال: American Journal of Sports Medicine
سال: 2021
ISSN: ['1552-3365', '0363-5465']
DOI: https://doi.org/10.1177/0363546520988039