The junction between the muscle belly and the tendon is slightly absent and subsided

Introduction Locally accessible to the muscle abdomen and tendon junction slightly missing and depressed more common in muscle strain, tendon composed of collagen fibers, does not have the ability to contract, its role is to transfer muscle contractility to 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.

Cause

Muscle tendon unit damage in sports and military training is the most common injury, but it is often the most overlooked injury. This situation is mainly due to the situation caused by improper force or fatigue during exercise or exercise, or it may be due to traumatic stimulation, so it is necessary to ask about the medical history when examining this situation.

an examination

Related inspection

Muscle tone test

1. Level 1: A few muscle fibers have tears visible under the light microscope, the surrounding fascia is intact, and there is muscle pain and local tenderness against the resistance test.

2. Level 2: A large number of muscle fibers break, the fascia may have tears, often have a "squeaky" feeling of pulling off, local pain, hematoma formation, local contact can be found in the muscle abdomen and tendon junction is slightly missing With depression, there is tenderness and mild dysfunction.

3. Level 3: The 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.

Differential diagnosis

Muscle strains should be distinguished from other muscle injuries, and severe strains can break muscles.

Arm muscle strain: Arm muscle strain is a kind of muscle strain, muscle damage during exercise or contraction caused by excessive traction.

Muscle strain: Muscle strain is the damage caused by the muscle contracting or over-drawing during exercise. This is easy to occur during long pull-ups and sit-up exercises. After the muscle strain, the painful part of the strained area can be touched by the muscles of the muscles, and the pain is obvious. The local swelling or subcutaneous hemorrhage is obviously restricted.

Muscle soreness: Muscle soreness caused by exercise is a very common injury experience for those involved in sports. In general, exercise-induced muscle soreness can be divided into acute muscle soreness and chronic (late onset muscle soreness). Acute muscle soreness is different from muscle strain, but refers to the soreness caused by temporary ischemia of the muscles. It only occurs when the muscles are intense or long-term, and the muscle activity disappears as soon as the muscle activity ends. Usually, acute muscle soreness can be mixed with muscle stiffness.

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