this refers to the disks in the spine ..as we age and other reasons the space begins to narrow between the vertabrae
Usually it means that the cartilage on the inside of the knee is flattened.
The medial and lateral condyles, located on the femur and the tibia, form the knee joint. The medial condyle, which is closer to the center of the body, is larger.
Collateral ligaments
Internal or external to what? The knee joint? There are a number of knee ligaments e.g. anterior and posterior cruciate ligaments are internal to the knee joint but the medial and lateral collateral ligaments are external to the knee joint
Crackling in any joint is called crepitus. Medial plica syndrome is one possible cause of crackling in the knee joint.
pivotal hinge joint that allows flexion, extension as well as slight medial and lateral movement.
In the knee joint you have synovial membrane. Medial co lateral and lateral co lateral ligaments. Inside the joint, you have anterior and posterior cruciate ligaments. and medial and lateral menisci. These all are supported by knee cap. It help to keep the soft tissue of the knee in position and there by helps in movement of the joint.
A cyst is an unusual or abnormal structure consisting of an endothelial lining around a collection of harmless fluid. Subarticular means it is below the surface of the joint, in the bone rather than actually in the joint space. The medial femoral condyle is the projection of the end of the femur bone on the inside of the leg in the knee joint.
The pivotal hinge joint that allows flexing, extension as well as slight medial and lateral movement.
That sounds like the cartilage in the joint of the knee has worn to a point where the bones have touched forming more bone in an attempt to repair the damage This leads, pain, stiffness and continued damage to the joint.
Four ligaments are present in the knee joint, the medial collateral ligament, lateral collateral ligament, anterior cruciate ligament, and posterior cruciate ligament. The medial collateral ligament is located at the inside of the knee joint. It extends from the medial femoral epicondyle to the tibia. The lateral collateral ligament is located at the outside of the knee joint. It extends from the lateral femoral epicondyle to the head of the fibula. The anterior cruciate ligament extends posterolaterally from the tibia and inserts on the lateral femoral condyle. The posterior cruciate ligament extends anteromedially from the tibia posterior to the medial femoral condyle.
When there is liquid in a test tube, it's the little dip at the top.