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Oblique Fracture: Causes, Symptoms & Treatment

An oblique fracture is a bone break where the fracture line runs diagonally across the long axis of the bone. It typically results from indirect force and often affects long bones.

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Things worth knowing about "Oblique fracture"

An oblique fracture is a bone break where the fracture line runs diagonally across the long axis of the bone. It typically results from indirect force and often affects long bones.

What is an Oblique Fracture?

An oblique fracture is a type of bone fracture in which the break line runs at an angle of approximately 30 to 60 degrees relative to the long axis of the bone. It is one of the most commonly encountered fracture patterns in trauma surgery and orthopedics. Long bones such as the femur (thigh bone), tibia (shin bone), humerus (upper arm bone), and the bones of the forearm are most frequently affected.

Causes

Oblique fractures typically result from indirect force, meaning the energy causing the fracture is transmitted through the body rather than applied directly to the bone. Common causes include:

Falls involving a twisting motion of the limb
Sports injuries, for example in skiing or football
Road traffic accidents
Trips and falls in everyday life
In elderly individuals or those with osteoporosis, even minor forces may be sufficient to cause an oblique fracture

Symptoms

Typical signs of an oblique fracture include:

Severe, localized pain at the fracture site, worsened by movement or weight-bearing
Swelling and bruising (hematoma) around the affected area
Visible or palpable deformity of the limb
Restricted or complete loss of movement
In severe cases: displacement of bone fragments (dislocation)

In open fractures, the bone may penetrate the skin, significantly increasing the risk of infection.

Diagnosis

Diagnosis of an oblique fracture is typically confirmed through:

Physical examination: Assessment of pain, swelling, deformity, and range of motion
X-ray imaging: The standard method for visualizing the fracture, its location, and the exact angle of the fracture line
Computed tomography (CT): Used for complex fractures or detailed surgical planning
Magnetic resonance imaging (MRI): Indicated when soft tissue, ligament, or nerve injuries are suspected

Treatment

Conservative Treatment

Non-displaced oblique fractures can often be managed conservatively with:

Immobilization using a plaster cast or functional orthosis
Pain management with anti-inflammatory medications
Physiotherapy to restore strength and mobility during recovery

Surgical Treatment

Displaced oblique fractures frequently require surgical intervention. Due to the angled nature of the fracture line, there is a risk of the bone fragments sliding against each other (secondary displacement). Surgical options include:

Intramedullary nailing: A metal nail is inserted into the medullary canal of the bone for stable fixation
Plate osteosynthesis: Fixation using metal plates and screws
Lag screw fixation: Screws placed perpendicular to the fracture line to compress the fragments together

Healing and Prognosis

The healing time for an oblique fracture depends on several factors, including the patient's age, general health, the location and severity of the fracture, and the treatment approach. In uncomplicated cases, bony union can generally be expected within 6 to 12 weeks. Physiotherapy is usually required afterward to fully restore function and strength to the affected limb.

References

Bucholz, R. W. et al. - Rockwood and Green's Fractures in Adults. Lippincott Williams & Wilkins, Philadelphia, 2010.
Ruchholtz, S. & Wirtz, D. C. - Orthopedics and Trauma Surgery Essentials. Thieme, Stuttgart, 2019.
World Health Organization (WHO) - Management of Fractures in the Context of Trauma Care. WHO Press, Geneva, 2018.

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