Quizz Lower Limb

What happens during hip flexion in open kinetic chain (OKC)?

• The acetabulum rolls and slides anteriorly

• The femoral head rolls posterior and slides anterior

• The femoral head rolls anterior and slides posterior

• The femur rolls and slides in the same direction

What movement is associated with pelvic retroversion in CKC?

• Hip extension

• Hip flexion

• Hip abduction

• Hip adduction

What is the main plane and axis of hip abduction?

• Frontal, anteroposterior axis

• Sagittal, mediolateral axis

• Horizontal, vertical axis

• Frontal, vertical axis

During adduction in OKC, how does the femoral head move?

• Rolls superior and slides inferior

• Rolls inferior and slides superior

• Only rolls inferior

• Only slides superior

What muscle is the main external rotator of the hip?

• Piriformis

• Gluteus medius

• Rectus femoris

• Pectineus

What combination of movements defines the open-packed position of the hip?

• Flexion, abduction, external rotation

• Extension, adduction, internal rotation

• Extension, abduction, internal rotation

• Flexion, adduction, external rotation

During open kinetic chain (OKC) extension, how does the tibia move over the femur?

• Anterior roll and posterior slide

• Roll and posterior slide

• Roll and anterior slide

• Posterior roll and anterior slide

What happens at the knee during flexion in CKC?

• The femur rolls anterior and slides posterior

• The femur rolls posterior and slides anterior

• The femur only rolls anterior

• The tibia rolls and slides posterior

What mechanism allows the final locking of the knee in extension?

• External tibial rotation

• Contraction of the gastrocnemius

• Internal femoral rotation

• Contraction of the biceps femoris

Which muscle unlocks the knee when starting to flex from full extension?

• Gastrocnemius

• Popliteus

• Semitendinosus

• Rectus femoris