What is the aponeurosis of the scalp?
The galea aponeurotica (also called the galeal or epicranial aponeurosis or the aponeurosis epicranialis) is a tough fibrous sheet of connective tissue that extends over the cranium, forming the middle (third) layer of the scalp.
Can your scalp separate from your skull?
The injury was described as a separation of the victims scalp from her skull. This caused a void between the scalp and skull that filled with blood. Doctors told police the injuries were likely the result of violent hair pulling and an impact to her left ear.
What is Galea aponeurosis?
The galea aponeurotica is a sturdy layer of dense fibrous tissue that runs between the frontal and occipital bellies of the occipitofrontal muscles. Ray and Wolff (1940) have reported that the skin, galea aponeurotica, and the fascia covering the temporal and occipital muscles are all sensitive to pain.
What is safety valve Haematoma of scalp?
Safety valve hematoma As a result, the signs of cerebral compression are not seen until the subaponeurotic space is completely full of blood. Because of this the collection of blood in the fourth layer is referred to as a safety valve hematoma.
What is the function of the epicranial aponeurosis?
At the top of your head is the epicranial aponeurosis. It is like a thin helmet beneath the scalp, and provides the attachment sites for the occipitofrontalis muscle, a muscle that controls the eyebrows and facial expressions. The abdominal aponeurosis envelopes the abdominal muscles.
What muscles are attached to the epicranial aponeurosis?
In front, it forms a short and narrow prolongation between its union with the frontalis muscle (the frontal part of the occipitofrontalis muscle). On either side, the epicranial aponeurosis attaches to the anterior auricular muscles and the superior auricular muscles.
What is avulsion of the scalp?
Scalp avulsion is a threatening blood loss injury. Rapid cessation of bleeding, wound compression and aggressive fluid resuscitation are important. With adequate resuscitation, careful evaluation and replantation as soon as possible the outcome is usually acceptable.
Why is my scalp paining?
Common causes of scalp tenderness and sensitivity. Scalp tenderness is a fairly common complaint, linked with several medical conditions that affect lots of people. Migraines, tension headaches, and autoimmune disorders like psoriasis can all cause the scalp to become inflamed, irritated, and painful.
What does the epicranial aponeurosis do?
What does the epicranial aponeurosis connect?
Epicranial aponeurosis (galea aponeurotica) The epicranial aponeurosis is a thin, tendinous structure that provides an insertion site for the occipitofrontalis muscle. Posterolaterally, the epicranial aponeurosis attachment extends from the superior nuchal line to the superior temporal line.
Why do scalp wounds gape?
However, if the aponeurosis is lacerated in the coronal plane, deep scalp wounds gape because of the contraction of the frontalis and occipitalis muscles, which contract in opposite directions.