Traumatic periostitis is a type of soft tissue contusion that occurs as a result of a direct mechanism of injury. The most frequently affected areas of bone are those that do not have muscle cover and are adjacent to the skin.
Rupture of the lateral ligaments of the first metacarpophalangeal joint usually occurs in athletes during unsuccessful attempts to perform exercises on gymnastic apparatus and is the result of forced excessive abduction of the first finger.
Rupture of the ligaments connecting the tibia and fibula in the distal part usually accompanies ankle fractures, but can also be isolated. The mechanism of injury is indirect.
Among isolated ruptures of the ankle joint ligaments, only a violation of the integrity of the anterior talofibular ligament is practically encountered. The mechanism of injury is indirect - forced supination with plantar flexion.
Ruptures of the lateral ligaments of the knee joint occur with an indirect mechanism of injury - excessive deviation of the tibia inward or outward, while the lateral ligament opposite the side of the deviation is torn.
The anterior and posterior cruciate ligaments prevent the shin from shifting forward and backward. When the tibia is subjected to severe force with a blow directed from behind and forward, the anterior cruciate ligament is torn; when force is applied in the opposite direction, the posterior cruciate ligament is torn.
Most often, a rupture of the patellar ligament occurs with a direct mechanism of injury. Closed injuries of the ligamentous apparatus in most cases are the result of indirect violence - a movement that exceeds the functional capabilities of the joint.
The cause of a rupture of the quadriceps tendon is a sharp, sudden contraction of the muscle when the limb is fully extended at the knee joint, or, less commonly, direct trauma.
