What is the knee thing?

"The knee thing" is a bit vague. To give you helpful information, I need to know what you mean. Are you referring to:

  • The knee joint itself? This is a complex structure involving the femur (thigh bone), tibia (shin bone), patella (kneecap), and ligaments, tendons, and cartilage that allow for flexion (bending), extension (straightening), and some rotation. Problems with the knee joint can include osteoarthritis, meniscus tears, ligament sprains (ACL, MCL, LCL, PCL), patellar tendinitis, and more.

  • A specific knee injury? Please describe the injury (e.g., "a twisted knee," "pain behind the kneecap").

  • A particular medical condition related to the knee? (e.g., "osteoarthritis," "Baker's cyst").

  • A slang term or phrase? This is possible depending on the context.

Please clarify your question so I can provide more relevant and accurate information.