What Are Posterior Labral Tears?

It is a fibrocartilage ring attached to the periphery of the articular fossa, which can deepen the articular fossa, enlarge the articular surface, and increase the fixation of the joint. The joints with articular lips are: shoulder joint, hip joint.

It is a fibrocartilage ring attached to the periphery of the articular fossa, which can deepen the articular fossa, enlarge the articular surface, and increase the fixation of the joint. The joints with articular lips are: shoulder joint, hip joint.

Chinese name

Articular lip

Foreign name

articular labrum

Joint Lip Function

The articular lip can stabilize the connection between the humerus and the shoulder joint, deepen the articular fossa, and increase the articular surface, thereby increasing the fixation of the joint.

Tear of articular lips

Tearing of the articular lip: The shoulder joint is a typical ball and socket joint, which can move around three basic axes for flexion, extension, extension, rotation and circular movement. The fibrocartilage of the shoulder joint is distributed on the acetabulum. The cartilage lip can increase the depth of the joint cavity and increase the area of the articular surface to stabilize the shoulder joint. Rupture of the shoulder lip means that the fibrocartilage ruptures there.

The articular lip can stabilize the connection between the humerus and the shoulder joint, but because it is located between the two bones, it is not easy to find when the articular lip is torn, and joint cavity photography is needed to diagnose the injured part. After tearing of the joint lips, tenderness, pain, and weakness will appear, and the upper edge of the joint will have obvious tenderness.

Articular lip shoulder articular lip

The shoulder joint is the joint with the highest mobility of the human body. Because of the highest mobility, the relative stability is also the worst. It must rely on joint ligaments and rotating muscle groups to maintain normal operation.

Each shoulder effort will pull to the shoulder joint lips. If the force is not applied properly, it will crack. If the joint lips tear, surgery is the treatment method.

Seek medical attention when problems occur in the shoulder joint, otherwise complications are likely to occur, causing irreparable injuries.

Human Lip and Shoulder Joints and Myeloid Joints

Among human active joints, the shoulder joint and the pith joint are both ball and socket joints, and the loads they are subjected to are relatively complex. There is a longitudinal compression force when supported, and an impact force and an abrasive force when the object is blocked. Comparing the two joints, although they can move in all directions, the former has a large range of motion and its function is mainly movement, while the latter has a small range of motion and its function is mainly support. In order to increase the stability of these two joints, joint lips are derived around the periphery of the joint socket. Because the joint lips are cartilage tissue, acute or chronic strains are prone to occur in daily life, labor and sports training. The damage to the joint lips will directly affect the movement and stability of the joints. After reviewing the data at home and abroad, there has not been any literature on the research of arthroplasty. To understand the arthritis from the perspective of genetics, on the one hand, it can fill the gaps in the research of human embryology and human anatomy, on the other hand, it can trace the roots of the healing mechanism of arthritis, providing valuable reference materials for clinical treatment .

Anatomical and histological research methods were used to observe the articular lips of the shoulder and medullary joints in the fetal period, and materials related to the occurrence time, morphology and histological characteristics of the articular lips of the two joints in the fetal period : 1, visible joint lips formed in the fetus for 3 months, synchronized with the occurrence of fetal joints. 2. Hyaluronic cartilage occurs when fetal articular lips occur, but with the increase of gestational age, there is a tendency to transform to fibrocartilage. 3. There are blood vessels in fetal articular cartilage, but the number of blood vessels decreases with increasing gestational age.