L12: Movement

Injures are common to what joint

The knee

Most commonly, injury occurs when forces are applied to an [blank] knee, particularly when the foot is planted and unable to move

extended

Anterior cruciate ligament injuries often result from

A forceful blow to the anterior knee, producing unnatural hyperextension

or:

When a person makes a quick change of direction that both twists and hyperextends the knee.

A moderate blow to the lateral knee will cause the medial side of the joint to open which results in

Stretching or damage to the tibial collateral ligament.

Since the medial meniscus is attached to the tibial collateral ligament, a strong blow can tear the ligament while also

Damaging the medial meniscus.

What meniscus is more likely to be injured medial or lateral

medial meniscus

A powerful blow to the lateral knee produces what

an “unhappy triad” injury

What is an “unhappy triad” injury

When a strong lateral blow causes sequential injury to the tibial collateral ligament, medial meniscus, and anterior cruciate ligament.