The Worst Possible Direction for Knee Joint: Hyperextension

The video explores the anatomy and function of the knee joint, focusing on the impact of forces and hyperextension. It details the roles of bones, tendons, and ligaments, particularly the ACL and PCL, in maintaining knee stability. The video also discusses the consequences of hyperextension, including potential injuries and conditions like arthritis, and explains the grading of ligament injuries.

What is the primary concern when forces push the knee joint in an unintended direction?

• Intense consequences

• Increased flexibility

• Enhanced mobility

• Improved strength

Which bone is the largest and strongest in the human body?

• Tibia

• Fibula

• Femur

• Patella

What is a sesamoid bone?

• A bone that forms the joint surface

• A bone that connects two muscles

• A bone that develops inside a tendon

• A bone that is part of the skull

What is the primary function of tendons?

• Connect bone to bone

• Generate movement at a joint

• Prevent joint movement

• Provide joint lubrication

What is the primary function of ligaments?

• Generate movement

• Connect muscles to bones

• Provide energy storage

• Define range of motion

Which ligament prevents the tibia from sliding forward in relation to the femur?

• PCL

• MCL

• LCL

• ACL

What is a common cause of knee hyperextension injuries?

• Prolonged sitting

• Excessive running

• Inappropriate landing

• High impact collisions

What is the role of the meniscus in the knee joint?

• Increases joint flexibility

• Prevents hyperextension

• Distributes forces between femur and tibia

• Connects muscles to bones

What is the consequence of a Grade 3 knee injury?

• Minor inflammation

• No visible damage

• Partial tear

• Full rupture

What is the term for excessive movement in the ligaments?

• Hypermobility

• Hypomobility

• Flexibility

• Rigidity