KINES 300 Lecture Notes - Lecture 20: Coxa Valga, Genu Valgum, Genu Varum
22 May 2020
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Glute med: open chain does il abd, closed chain responsible for preventing cl hip drop. Anterior pelvic tilt: iliopsoas and erector spinae. Posterior pelvic tilt: hamstrings, glute max, rectus abdominus. Core: in open chain hip flexion, abdominals must contract to counteract the anterior pelvic tilt and keep the pelvis in neutral. Hip anteversion/retroversion/coxa vara/coxa valga influences on le chain. Angle of inclination: normal 125 coxa valga coxa vara genu varum genu valgum. Torsion angle: normal 10-15 anteversion retroversion toes in toes out. Piriformis action: abd and er of the hip. Reverse action/to stretch: add and ir of the hip. Primary mechanisms of injury for ligaments at knee. Large valgus/varus or axial rotation with foot planted or hyperextension. Tibial rotations that are limited by acl/pcl vs. mcl/lcl. Structures that limit varus/valgus at 0 and 30 of knee flexion. Mcl is primary restraint to valgus stress at 30 of knee flexion. Lcl is primary restraint to varus at 30 of knee flexion.
