Acute injury of the muscle-tendon unit
Introduction
Introduction to acute injury of muscle tendon units Muscle tendon units include tendon, muscle abdomen, tendon structure and accessory structures such as myofascial and tendon sheath. Muscle contraction produces strong stress during exercise and passive stretch of antagonistic muscle. The tendon is composed of collagen fibers and does not have the ability to contract. Its function is to transfer the contractile force of the muscle to the bone tissue. The crepe fiber is corrugated at rest, and the corrugation disappears when stretched. When excessively pulled, the collagen fiber may be slightly damaged, or even tendon rupture. basic knowledge The proportion of illness: 0.005% Susceptible people: no special people Mode of infection: non-infectious Complications: ossifying myositis
Cause
Causes of acute injury in muscle tendon units
(1) Causes of the disease
Muscle tendon unit damage is the most common injury in sports and military training, but it is often the most easily overlooked injury.
(two) pathogenesis
Muscle strain is a tension caused by the active contraction of muscles against muscles caused by gravity or resistance. It is an indirect injury. It occurs in muscles that cross the two joints and have a higher proportion of type II muscle fibers, such as calves. Triceps, hamstrings, quadriceps and so on.
Prevention
Acute injury prevention of muscle tendon units
1. In the usual training, pay attention to the synergistic exercise of the muscles in each part, and develop the muscle groups proportionally.
2. Stretch the muscles of each group before exercise, and then perform several slow passive drafts after the muscles are in the extended position.
3. Prevent exercise and training in the event of muscle fatigue.
4. Adequate preparation activities, warm-up activities should be done during the cold season.
Complication
Acute injury complications of muscle tendon units Complications ossifying myositis
Ossifying myositis: complications of severe contusion, high disability rate, local pain and stiffness, sometimes touching the mass, first appeared 2 to 4 weeks after injury, X-ray film shows increased density, there is a handle in the shadow The pedicle is connected to the backbone, or has a wide base attached to the bone, or is completely out of contact with the bone. Patients without a history of trauma should rule out the possibility of the tumor. There is no special treatment at present. There is still pain or joint in the course of more than 1 year. Surgical resection is considered only if the activity is significantly limited.
Symptom
Acute injury symptoms of muscle tendon units Common symptoms Drought pain Hematoma formation can be touched to the muscles of the muscles... Muscle completely broken
1. The first few muscle fibers have visible tears under the light microscope, the surrounding fascia is intact, and there is muscle pain and local tenderness against the resistance test.
2. The second level of more muscle fiber breaks, the fascia may have tears, often have a "squeaky" feeling of pulling off, local pain, hematoma formation, local touch to the muscle abdomen and tendon junction is slightly missing Sag, tenderness and mild dysfunction.
3. The third-grade muscle is completely broken, there is severe pain when injured, and obvious loss can be felt. There is tenderness, there may be a large hematoma formation, and the muscle function of the strain is lost.
Examine
Examination of acute injury of muscle tendon units
High-frequency B-ultrasound or MRI can be used to diagnose the degree of muscle fracture.
Diagnosis
Diagnosis and diagnosis of acute injury of muscle tendon unit
Muscle damage can usually be made by physical examination, but sometimes it is difficult to judge the degree of muscle rupture. High-frequency B-ultrasound or MRI can help to diagnose the degree of muscle rupture and can be used as a follow-up method.
This disease is generally not confused with other diseases.
