Depressed Fracture – Causes, Symptoms & Treatment
A depressed fracture is a type of bone fracture where bone fragments are pushed inward. It most commonly affects the skull and often requires prompt medical attention.
Things worth knowing about "Depressed fracture"
A depressed fracture is a type of bone fracture where bone fragments are pushed inward. It most commonly affects the skull and often requires prompt medical attention.
What is a Depressed Fracture?
A depressed fracture (also known as an impression fracture) is a specific type of bone fracture in which fragments of bone are forced inward due to an external impact. Unlike simple fractures where the bone merely breaks, a depressed fracture causes bone splinters or segments to be displaced toward the underlying tissue. This type of fracture most commonly affects the skull, but can also occur in other bones such as the vertebrae or tibia.
Causes
Depressed fractures are typically caused by direct, concentrated force applied to the bone. Common causes include:
- Falls with impact on a hard surface or object
- Blows to the skull from blunt objects
- Motor vehicle accidents
- Sports-related injuries (e.g., cycling or climbing accidents)
- Physical assaults
In newborns, a depressed skull fracture can rarely result from a complicated delivery, for instance when forceps are used during childbirth.
Symptoms
The symptoms of a depressed fracture depend on the location and severity of the injury. In the case of a depressed skull fracture, the following symptoms may occur:
- Visible or palpable indentation in the skull
- Headache and dizziness
- Nausea and vomiting
- Loss of consciousness or altered consciousness
- Seizures
- Neurological deficits such as paralysis, visual disturbances, or speech difficulties
- Bleeding from the ear or nose
In the case of depressed fractures of the spine (vertebral body compression fractures), back pain and potential neurological symptoms due to pressure on the spinal cord are the primary concerns.
Diagnosis
The diagnosis of a depressed fracture is typically established using imaging techniques:
- X-ray: Often the first investigation used to provide a general assessment of the fracture.
- Computed Tomography (CT): The gold standard for depressed skull fractures, providing detailed information about the extent of the fracture and any associated brain injuries.
- Magnetic Resonance Imaging (MRI): Particularly useful for assessing soft tissue damage, brain injury, or spinal cord involvement.
Neurological examinations and assessment of the level of consciousness (e.g., using the Glasgow Coma Scale) are also performed as part of the diagnostic workup.
Treatment
Treatment of a depressed fracture depends on the location, severity, and any associated injuries.
Conservative Treatment
For mild, non-displaced depressed fractures without involvement of the brain or spinal cord, conservative management may be sufficient. This includes:
- In-hospital observation and monitoring
- Pain management with appropriate medications
- Immobilization of the affected area
Surgical Treatment
In many cases -- especially when bone fragments are deeply depressed, when there is pressure on the brain or spinal cord, bleeding, or in cases of open fractures -- surgical intervention is required. The goals of surgery include:
- Repositioning (reduction) of the depressed bone fragments
- Decompression of the brain or spinal cord
- Control of bleeding (haemostasis)
- Prevention of infection in open fractures
Prognosis and Follow-up
The prognosis depends greatly on the extent of the injury and the speed of treatment. Mild depressed fractures without neurological involvement often heal well. More severe injuries involving the brain may require long-term rehabilitation to restore neurological function. Regular follow-up examinations after treatment are essential.
References
- Greenberg, M.S. - Handbook of Neurosurgery, 9th Edition, Thieme Medical Publishers (2019).
- National Institute of Neurological Disorders and Stroke (NINDS) - Traumatic Brain Injury Information. Available at: www.ninds.nih.gov
- World Health Organization (WHO) - Violence and Injury Prevention. Available at: www.who.int
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