Which term describes the bending backward of the knee, often referred to as knee hyperextension?

Knee hyperextension, also known as recurvatum, specifically refers to the bending backward of the knee beyond its normal straightened position. This condition can occur when force is applied or due to certain anatomical factors, and it results in an angle that is greater than 180 degrees at the joint.

The term "recurvatum" directly highlights this abnormal extension where the knee appears to hyperextend, making it a precise descriptor in orthopedic terminology. Understanding this term is critical for orthopedic technologists when assessing knee injuries or conditions related to abnormal joint mechanics.

In contrast, other terms like extension and flexion refer to the act of straightening and bending the knee, respectively, while adduction describes the movement of a body part towards the midline of the body — none of which accurately capture the concept of the knee bending backward.