A knee replacement implant typically weighs around 1-2 pounds, depending on the size and materials used in the prosthetic joint.
patela a bone whitch made of hyline cartilage work as like a cap of knee and decrease friction beetween the knee joint with the help of synovial fluid
The cartilage and fiberous tissue create an impact zone and the fatty materials there lubricate the mechanical hinge of the bones. The joint structure itself however holds no friction reduction, it is the secondary structure of soft tissues that do all of the protection.
Prosthetic (artificial) knees are truly an amazing piece of biomedical engineering but they are far from perfect when it comes to matching the actual human knee joint. Most people think a knee joint is just an ordinary HINGE joint, flexing and extending as we walk and run, but it is really much more than that. The thing one has to first understand is that the overall design package of the human body and it's various organ and organ systems is one of amazing efficiency when it comes to using energy derived from food to do work. And one aspect of this is to require the knee joint to pivot slightly in addition to flexing and extending. It is this pivoting action that creates the 'klunk' sensation in prosthetic knees.
It is not a separate joint it is your hip joint, the hip joint is a ball & socket joint!!!
knee
If there is not enough fluid in the knee joint, it is typically referred to as "knee joint effusion" or "knee synovitis." This condition can result in pain, swelling, and reduced mobility. Insufficient synovial fluid can lead to increased friction between the joint surfaces, causing discomfort and potential damage over time. It may be caused by conditions such as arthritis, injury, or dehydration.
The form of pad that cushions the knee joint is called the meniscus. It consists of two crescent-shaped cartilaginous structures, the medial and lateral menisci, which act as shock absorbers between the femur and tibia. These pads help distribute weight and reduce friction during movement, contributing to the overall stability and function of the knee joint.
The cartilage helps cushion and reduce friction in the joint.
It can make the joint unstable.
the muscle that is attached to the knee joint is the HINGE
knee joint