Fissure Collateral

The collateral groove (lat. fissura collateralis) is a deep groove on the surface of the temporal bone, located between the temporomandibular and carotid canals. It is one of the main elements of the temporomandibular joint and plays an important role in its functioning.

The collateral groove is a narrow gap that runs parallel to the upper edge of the masseter muscle and the lower edge of the temporal canal. Its length is about 30 mm and its width is about 5 mm.

The main function of the collateral groove is to ensure free movement of the temporomandibular joint. This is achieved due to the fact that the groove provides space for the passage of masticatory muscles and blood vessels. In addition, the collateral groove protects the temporal canal from damage during chewing and other movements of the lower jaw.

However, in some people the collateral groove may be disrupted or absent. This can lead to various problems such as limited jaw mobility, temporomandibular joint pain, balance problems, etc. Therefore, if you suspect a disorder of the collateral sulcus, you should consult a doctor for diagnosis and treatment.

Fissure collaterals *

**Characteristics** - these grooves give off branches from the posterior cruciate ligament, pass in the lateral region of the knee joint and connect the posterior cruciate ligament with the anterior cruciate ligament, which lies on the lateral condyle of the femur. Due to the movement that accompanies the internal rotation of the hip, the lateral malleolus becomes caught in this loop. During internal rotation of the femur, it penetrates the posterolateral part of the supinator surface of the femoral condyle and can