Schematic of the knee model showing the locations and numbers of bundles of the modeled ligaments: the anterior and posterior bundle of the anterior cruciate ligament (ACLa and ACLp, green); the anterior and posterior bundle of the posterior cruciate ligament (PCLa and PCLp); the lateral collateral ligament; the anterior, oblique and deep bundle of the medial collateral ligament (MCLa, MCLo, and MCLd); the medial, lateral, oblique popliteal and arcuate popliteal bundle of the posterior capsules (CAPm, CAPl, CAPo, and CAPa); and the medial and lateral patellar ligament (PM and PL).